_ Git - youtube-dl/blob - youtube_dl/YoutubeDL.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 from __future__ import absolute_import, unicode_literals
   5
   6 import collections
   7 import contextlib
   8 import datetime
   9 import errno
  10 import fileinput
  11 import io
  12 import itertools
  13 import json
  14 import locale
  15 import operator
  16 import os
  17 import platform
  18 import re
  19 import shutil
  20 import subprocess
  21 import socket
  22 import sys
  23 import time
  24 import traceback
  25
  26 if os.name == 'nt':
  27     import ctypes
  28
  29 from .compat import (
  30     compat_basestring,
  31     compat_cookiejar,
  32     compat_expanduser,
  33     compat_get_terminal_size,
  34     compat_http_client,
  35     compat_kwargs,
  36     compat_str,
  37     compat_urllib_error,
  38     compat_urllib_request,
  39 )
  40 from .utils import (
  41     escape_url,
  42     ContentTooShortError,
  43     date_from_str,
  44     DateRange,
  45     DEFAULT_OUTTMPL,
  46     determine_ext,
  47     DownloadError,
  48     encodeFilename,
  49     ExtractorError,
  50     format_bytes,
  51     formatSeconds,
  52     locked_file,
  53     make_HTTPS_handler,
  54     MaxDownloadsReached,
  55     PagedList,
  56     parse_filesize,
  57     PerRequestProxyHandler,
  58     PostProcessingError,
  59     platform_name,
  60     preferredencoding,
  61     render_table,
  62     SameFileError,
  63     sanitize_filename,
  64     sanitize_path,
  65     std_headers,
  66     subtitles_filename,
  67     takewhile_inclusive,
  68     UnavailableVideoError,
  69     url_basename,
  70     version_tuple,
  71     write_json_file,
  72     write_string,
  73     YoutubeDLHandler,
  74     prepend_extension,
  75     args_to_str,
  76     age_restricted,
  77 )
  78 from .cache import Cache
  79 from .extractor import get_info_extractor, gen_extractors
  80 from .downloader import get_suitable_downloader
  81 from .downloader.rtmp import rtmpdump_version
  82 from .postprocessor import (
  83     FFmpegFixupM4aPP,
  84     FFmpegFixupStretchedPP,
  85     FFmpegMergerPP,
  86     FFmpegPostProcessor,
  87     get_postprocessor,
  88 )
  89 from .version import __version__
  90
  91
  92 class YoutubeDL(object):
  93     """YoutubeDL class.
  94
  95     YoutubeDL objects are the ones responsible of downloading the
  96     actual video file and writing it to disk if the user has requested
  97     it, among some other tasks. In most cases there should be one per
  98     program. As, given a video URL, the downloader doesn't know how to
  99     extract all the needed information, task that InfoExtractors do, it
 100     has to pass the URL to one of them.
 101
 102     For this, YoutubeDL objects have a method that allows
 103     InfoExtractors to be registered in a given order. When it is passed
 104     a URL, the YoutubeDL object handles it to the first InfoExtractor it
 105     finds that reports being able to handle it. The InfoExtractor extracts
 106     all the information about the video or videos the URL refers to, and
 107     YoutubeDL process the extracted information, possibly using a File
 108     Downloader to download the video.
 109
 110     YoutubeDL objects accept a lot of parameters. In order not to saturate
 111     the object constructor with arguments, it receives a dictionary of
 112     options instead. These options are available through the params
 113     attribute for the InfoExtractors to use. The YoutubeDL also
 114     registers itself as the downloader in charge for the InfoExtractors
 115     that are added to it, so this is a "mutual registration".
 116
 117     Available options:
 118
 119     username:          Username for authentication purposes.
 120     password:          Password for authentication purposes.
 121     videopassword:     Password for acces a video.
 122     usenetrc:          Use netrc for authentication instead.
 123     verbose:           Print additional info to stdout.
 124     quiet:             Do not print messages to stdout.
 125     no_warnings:       Do not print out anything for warnings.
 126     forceurl:          Force printing final URL.
 127     forcetitle:        Force printing title.
 128     forceid:           Force printing ID.
 129     forcethumbnail:    Force printing thumbnail URL.
 130     forcedescription:  Force printing description.
 131     forcefilename:     Force printing final filename.
 132     forceduration:     Force printing duration.
 133     forcejson:         Force printing info_dict as JSON.
 134     dump_single_json:  Force printing the info_dict of the whole playlist
 135                        (or video) as a single JSON line.
 136     simulate:          Do not download the video files.
 137     format:            Video format code. See options.py for more information.
 138     format_limit:      Highest quality format to try.
 139     outtmpl:           Template for output names.
 140     restrictfilenames: Do not allow "&" and spaces in file names
 141     ignoreerrors:      Do not stop on download errors.
 142     nooverwrites:      Prevent overwriting files.
 143     playliststart:     Playlist item to start at.
 144     playlistend:       Playlist item to end at.
 145     playlist_items:    Specific indices of playlist to download.
 146     playlistreverse:   Download playlist items in reverse order.
 147     matchtitle:        Download only matching titles.
 148     rejecttitle:       Reject downloads for matching titles.
 149     logger:            Log messages to a logging.Logger instance.
 150     logtostderr:       Log messages to stderr instead of stdout.
 151     writedescription:  Write the video description to a .description file
 152     writeinfojson:     Write the video description to a .info.json file
 153     writeannotations:  Write the video annotations to a .annotations.xml file
 154     writethumbnail:    Write the thumbnail image to a file
 155     write_all_thumbnails:  Write all thumbnail formats to files
 156     writesubtitles:    Write the video subtitles to a file
 157     writeautomaticsub: Write the automatic subtitles to a file
 158     allsubtitles:      Downloads all the subtitles of the video
 159                        (requires writesubtitles or writeautomaticsub)
 160     listsubtitles:     Lists all available subtitles for the video
 161     subtitlesformat:   The format code for subtitles
 162     subtitleslangs:    List of languages of the subtitles to download
 163     keepvideo:         Keep the video file after post-processing
 164     daterange:         A DateRange object, download only if the upload_date is in the range.
 165     skip_download:     Skip the actual download of the video file
 166     cachedir:          Location of the cache files in the filesystem.
 167                        False to disable filesystem cache.
 168     noplaylist:        Download single video instead of a playlist if in doubt.
 169     age_limit:         An integer representing the user's age in years.
 170                        Unsuitable videos for the given age are skipped.
 171     min_views:         An integer representing the minimum view count the video
 172                        must have in order to not be skipped.
 173                        Videos without view count information are always
 174                        downloaded. None for no limit.
 175     max_views:         An integer representing the maximum view count.
 176                        Videos that are more popular than that are not
 177                        downloaded.
 178                        Videos without view count information are always
 179                        downloaded. None for no limit.
 180     download_archive:  File name of a file where all downloads are recorded.
 181                        Videos already present in the file are not downloaded
 182                        again.
 183     cookiefile:        File name where cookies should be read from and dumped to.
 184     nocheckcertificate:Do not verify SSL certificates
 185     prefer_insecure:   Use HTTP instead of HTTPS to retrieve information.
 186                        At the moment, this is only supported by YouTube.
 187     proxy:             URL of the proxy server to use
 188     cn_verification_proxy:  URL of the proxy to use for IP address verification
 189                        on Chinese sites. (Experimental)
 190     socket_timeout:    Time to wait for unresponsive hosts, in seconds
 191     bidi_workaround:   Work around buggy terminals without bidirectional text
 192                        support, using fridibi
 193     debug_printtraffic:Print out sent and received HTTP traffic
 194     include_ads:       Download ads as well
 195     default_search:    Prepend this string if an input url is not valid.
 196                        'auto' for elaborate guessing
 197     encoding:          Use this encoding instead of the system-specified.
 198     extract_flat:      Do not resolve URLs, return the immediate result.
 199                        Pass in 'in_playlist' to only show this behavior for
 200                        playlist items.
 201     postprocessors:    A list of dictionaries, each with an entry
 202                        * key:  The name of the postprocessor. See
 203                                youtube_dl/postprocessor/__init__.py for a list.
 204                        as well as any further keyword arguments for the
 205                        postprocessor.
 206     progress_hooks:    A list of functions that get called on download
 207                        progress, with a dictionary with the entries
 208                        * status: One of "downloading", "error", or "finished".
 209                                  Check this first and ignore unknown values.
 210
 211                        If status is one of "downloading", or "finished", the
 212                        following properties may also be present:
 213                        * filename: The final filename (always present)
 214                        * tmpfilename: The filename we're currently writing to
 215                        * downloaded_bytes: Bytes on disk
 216                        * total_bytes: Size of the whole file, None if unknown
 217                        * total_bytes_estimate: Guess of the eventual file size,
 218                                                None if unavailable.
 219                        * elapsed: The number of seconds since download started.
 220                        * eta: The estimated time in seconds, None if unknown
 221                        * speed: The download speed in bytes/second, None if
 222                                 unknown
 223                        * fragment_index: The counter of the currently
 224                                          downloaded video fragment.
 225                        * fragment_count: The number of fragments (= individual
 226                                          files that will be merged)
 227
 228                        Progress hooks are guaranteed to be called at least once
 229                        (with status "finished") if the download is successful.
 230     merge_output_format: Extension to use when merging formats.
 231     fixup:             Automatically correct known faults of the file.
 232                        One of:
 233                        - "never": do nothing
 234                        - "warn": only emit a warning
 235                        - "detect_or_warn": check whether we can do anything
 236                                            about it, warn otherwise (default)
 237     source_address:    (Experimental) Client-side IP address to bind to.
 238     call_home:         Boolean, true iff we are allowed to contact the
 239                        youtube-dl servers for debugging.
 240     sleep_interval:    Number of seconds to sleep before each download.
 241     listformats:       Print an overview of available video formats and exit.
 242     list_thumbnails:   Print a table of all thumbnails and exit.
 243     match_filter:      A function that gets called with the info_dict of
 244                        every video.
 245                        If it returns a message, the video is ignored.
 246                        If it returns None, the video is downloaded.
 247                        match_filter_func in utils.py is one example for this.
 248     no_color:          Do not emit color codes in output.
 249
 250     The following options determine which downloader is picked:
 251     external_downloader: Executable of the external downloader to call.
 252                        None or unset for standard (built-in) downloader.
 253     hls_prefer_native: Use the native HLS downloader instead of ffmpeg/avconv.
 254
 255     The following parameters are not used by YoutubeDL itself, they are used by
 256     the downloader (see youtube_dl/downloader/common.py):
 257     nopart, updatetime, buffersize, ratelimit, min_filesize, max_filesize, test,
 258     noresizebuffer, retries, continuedl, noprogress, consoletitle,
 259     xattr_set_filesize, external_downloader_args.
 260
 261     The following options are used by the post processors:
 262     prefer_ffmpeg:     If True, use ffmpeg instead of avconv if both are available,
 263                        otherwise prefer avconv.
 264     exec_cmd:          Arbitrary command to run after downloading
 265     """
 266
 267     params = None
 268     _ies = []
 269     _pps = []
 270     _download_retcode = None
 271     _num_downloads = None
 272     _screen_file = None
 273
 274     def __init__(self, params=None, auto_init=True):
 275         """Create a FileDownloader object with the given options."""
 276         if params is None:
 277             params = {}
 278         self._ies = []
 279         self._ies_instances = {}
 280         self._pps = []
 281         self._progress_hooks = []
 282         self._download_retcode = 0
 283         self._num_downloads = 0
 284         self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
 285         self._err_file = sys.stderr
 286         self.params = params
 287         self.cache = Cache(self)
 288
 289         if params.get('bidi_workaround', False):
 290             try:
 291                 import pty
 292                 master, slave = pty.openpty()
 293                 width = compat_get_terminal_size().columns
 294                 if width is None:
 295                     width_args = []
 296                 else:
 297                     width_args = ['-w', str(width)]
 298                 sp_kwargs = dict(
 299                     stdin=subprocess.PIPE,
 300                     stdout=slave,
 301                     stderr=self._err_file)
 302                 try:
 303                     self._output_process = subprocess.Popen(
 304                         ['bidiv'] + width_args, **sp_kwargs
 305                     )
 306                 except OSError:
 307                     self._output_process = subprocess.Popen(
 308                         ['fribidi', '-c', 'UTF-8'] + width_args, **sp_kwargs)
 309                 self._output_channel = os.fdopen(master, 'rb')
 310             except OSError as ose:
 311                 if ose.errno == 2:
 312                     self.report_warning('Could not find fribidi executable, ignoring --bidi-workaround . Make sure that  fribidi  is an executable file in one of the directories in your $PATH.')
 313                 else:
 314                     raise
 315
 316         if (sys.version_info >= (3,) and sys.platform != 'win32' and
 317                 sys.getfilesystemencoding() in ['ascii', 'ANSI_X3.4-1968'] and
 318                 not params.get('restrictfilenames', False)):
 319             # On Python 3, the Unicode filesystem API will throw errors (#1474)
 320             self.report_warning(
 321                 'Assuming --restrict-filenames since file system encoding '
 322                 'cannot encode all characters. '
 323                 'Set the LC_ALL environment variable to fix this.')
 324             self.params['restrictfilenames'] = True
 325
 326         if isinstance(params.get('outtmpl'), bytes):
 327             self.report_warning(
 328                 'Parameter outtmpl is bytes, but should be a unicode string. '
 329                 'Put  from __future__ import unicode_literals  at the top of your code file or consider switching to Python 3.x.')
 330
 331         self._setup_opener()
 332
 333         if auto_init:
 334             self.print_debug_header()
 335             self.add_default_info_extractors()
 336
 337         for pp_def_raw in self.params.get('postprocessors', []):
 338             pp_class = get_postprocessor(pp_def_raw['key'])
 339             pp_def = dict(pp_def_raw)
 340             del pp_def['key']
 341             pp = pp_class(self, **compat_kwargs(pp_def))
 342             self.add_post_processor(pp)
 343
 344         for ph in self.params.get('progress_hooks', []):
 345             self.add_progress_hook(ph)
 346
 347     def warn_if_short_id(self, argv):
 348         # short YouTube ID starting with dash?
 349         idxs = [
 350             i for i, a in enumerate(argv)
 351             if re.match(r'^-[0-9A-Za-z_-]{10}$', a)]
 352         if idxs:
 353             correct_argv = (
 354                 ['youtube-dl'] +
 355                 [a for i, a in enumerate(argv) if i not in idxs] +
 356                 ['--'] + [argv[i] for i in idxs]
 357             )
 358             self.report_warning(
 359                 'Long argument string detected. '
 360                 'Use -- to separate parameters and URLs, like this:\n%s\n' %
 361                 args_to_str(correct_argv))
 362
 363     def add_info_extractor(self, ie):
 364         """Add an InfoExtractor object to the end of the list."""
 365         self._ies.append(ie)
 366         self._ies_instances[ie.ie_key()] = ie
 367         ie.set_downloader(self)
 368
 369     def get_info_extractor(self, ie_key):
 370         """
 371         Get an instance of an IE with name ie_key, it will try to get one from
 372         the _ies list, if there's no instance it will create a new one and add
 373         it to the extractor list.
 374         """
 375         ie = self._ies_instances.get(ie_key)
 376         if ie is None:
 377             ie = get_info_extractor(ie_key)()
 378             self.add_info_extractor(ie)
 379         return ie
 380
 381     def add_default_info_extractors(self):
 382         """
 383         Add the InfoExtractors returned by gen_extractors to the end of the list
 384         """
 385         for ie in gen_extractors():
 386             self.add_info_extractor(ie)
 387
 388     def add_post_processor(self, pp):
 389         """Add a PostProcessor object to the end of the chain."""
 390         self._pps.append(pp)
 391         pp.set_downloader(self)
 392
 393     def add_progress_hook(self, ph):
 394         """Add the progress hook (currently only for the file downloader)"""
 395         self._progress_hooks.append(ph)
 396
 397     def _bidi_workaround(self, message):
 398         if not hasattr(self, '_output_channel'):
 399             return message
 400
 401         assert hasattr(self, '_output_process')
 402         assert isinstance(message, compat_str)
 403         line_count = message.count('\n') + 1
 404         self._output_process.stdin.write((message + '\n').encode('utf-8'))
 405         self._output_process.stdin.flush()
 406         res = ''.join(self._output_channel.readline().decode('utf-8')
 407                       for _ in range(line_count))
 408         return res[:-len('\n')]
 409
 410     def to_screen(self, message, skip_eol=False):
 411         """Print message to stdout if not in quiet mode."""
 412         return self.to_stdout(message, skip_eol, check_quiet=True)
 413
 414     def _write_string(self, s, out=None):
 415         write_string(s, out=out, encoding=self.params.get('encoding'))
 416
 417     def to_stdout(self, message, skip_eol=False, check_quiet=False):
 418         """Print message to stdout if not in quiet mode."""
 419         if self.params.get('logger'):
 420             self.params['logger'].debug(message)
 421         elif not check_quiet or not self.params.get('quiet', False):
 422             message = self._bidi_workaround(message)
 423             terminator = ['\n', ''][skip_eol]
 424             output = message + terminator
 425
 426             self._write_string(output, self._screen_file)
 427
 428     def to_stderr(self, message):
 429         """Print message to stderr."""
 430         assert isinstance(message, compat_str)
 431         if self.params.get('logger'):
 432             self.params['logger'].error(message)
 433         else:
 434             message = self._bidi_workaround(message)
 435             output = message + '\n'
 436             self._write_string(output, self._err_file)
 437
 438     def to_console_title(self, message):
 439         if not self.params.get('consoletitle', False):
 440             return
 441         if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
 442             # c_wchar_p() might not be necessary if `message` is
 443             # already of type unicode()
 444             ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
 445         elif 'TERM' in os.environ:
 446             self._write_string('\033]0;%s\007' % message, self._screen_file)
 447
 448     def save_console_title(self):
 449         if not self.params.get('consoletitle', False):
 450             return
 451         if 'TERM' in os.environ:
 452             # Save the title on stack
 453             self._write_string('\033[22;0t', self._screen_file)
 454
 455     def restore_console_title(self):
 456         if not self.params.get('consoletitle', False):
 457             return
 458         if 'TERM' in os.environ:
 459             # Restore the title from stack
 460             self._write_string('\033[23;0t', self._screen_file)
 461
 462     def __enter__(self):
 463         self.save_console_title()
 464         return self
 465
 466     def __exit__(self, *args):
 467         self.restore_console_title()
 468
 469         if self.params.get('cookiefile') is not None:
 470             self.cookiejar.save()
 471
 472     def trouble(self, message=None, tb=None):
 473         """Determine action to take when a download problem appears.
 474
 475         Depending on if the downloader has been configured to ignore
 476         download errors or not, this method may throw an exception or
 477         not when errors are found, after printing the message.
 478
 479         tb, if given, is additional traceback information.
 480         """
 481         if message is not None:
 482             self.to_stderr(message)
 483         if self.params.get('verbose'):
 484             if tb is None:
 485                 if sys.exc_info()[0]:  # if .trouble has been called from an except block
 486                     tb = ''
 487                     if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
 488                         tb += ''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
 489                     tb += compat_str(traceback.format_exc())
 490                 else:
 491                     tb_data = traceback.format_list(traceback.extract_stack())
 492                     tb = ''.join(tb_data)
 493             self.to_stderr(tb)
 494         if not self.params.get('ignoreerrors', False):
 495             if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
 496                 exc_info = sys.exc_info()[1].exc_info
 497             else:
 498                 exc_info = sys.exc_info()
 499             raise DownloadError(message, exc_info)
 500         self._download_retcode = 1
 501
 502     def report_warning(self, message):
 503         '''
 504         Print the message to stderr, it will be prefixed with 'WARNING:'
 505         If stderr is a tty file the 'WARNING:' will be colored
 506         '''
 507         if self.params.get('logger') is not None:
 508             self.params['logger'].warning(message)
 509         else:
 510             if self.params.get('no_warnings'):
 511                 return
 512             if not self.params.get('no_color') and self._err_file.isatty() and os.name != 'nt':
 513                 _msg_header = '\033[0;33mWARNING:\033[0m'
 514             else:
 515                 _msg_header = 'WARNING:'
 516             warning_message = '%s %s' % (_msg_header, message)
 517             self.to_stderr(warning_message)
 518
 519     def report_error(self, message, tb=None):
 520         '''
 521         Do the same as trouble, but prefixes the message with 'ERROR:', colored
 522         in red if stderr is a tty file.
 523         '''
 524         if not self.params.get('no_color') and self._err_file.isatty() and os.name != 'nt':
 525             _msg_header = '\033[0;31mERROR:\033[0m'
 526         else:
 527             _msg_header = 'ERROR:'
 528         error_message = '%s %s' % (_msg_header, message)
 529         self.trouble(error_message, tb)
 530
 531     def report_file_already_downloaded(self, file_name):
 532         """Report file has already been fully downloaded."""
 533         try:
 534             self.to_screen('[download] %s has already been downloaded' % file_name)
 535         except UnicodeEncodeError:
 536             self.to_screen('[download] The file has already been downloaded')
 537
 538     def prepare_filename(self, info_dict):
 539         """Generate the output filename."""
 540         try:
 541             template_dict = dict(info_dict)
 542
 543             template_dict['epoch'] = int(time.time())
 544             autonumber_size = self.params.get('autonumber_size')
 545             if autonumber_size is None:
 546                 autonumber_size = 5
 547             autonumber_templ = '%0' + str(autonumber_size) + 'd'
 548             template_dict['autonumber'] = autonumber_templ % self._num_downloads
 549             if template_dict.get('playlist_index') is not None:
 550                 template_dict['playlist_index'] = '%0*d' % (len(str(template_dict['n_entries'])), template_dict['playlist_index'])
 551             if template_dict.get('resolution') is None:
 552                 if template_dict.get('width') and template_dict.get('height'):
 553                     template_dict['resolution'] = '%dx%d' % (template_dict['width'], template_dict['height'])
 554                 elif template_dict.get('height'):
 555                     template_dict['resolution'] = '%sp' % template_dict['height']
 556                 elif template_dict.get('width'):
 557                     template_dict['resolution'] = '?x%d' % template_dict['width']
 558
 559             sanitize = lambda k, v: sanitize_filename(
 560                 compat_str(v),
 561                 restricted=self.params.get('restrictfilenames'),
 562                 is_id=(k == 'id'))
 563             template_dict = dict((k, sanitize(k, v))
 564                                  for k, v in template_dict.items()
 565                                  if v is not None)
 566             template_dict = collections.defaultdict(lambda: 'NA', template_dict)
 567
 568             outtmpl = sanitize_path(self.params.get('outtmpl', DEFAULT_OUTTMPL))
 569             tmpl = compat_expanduser(outtmpl)
 570             filename = tmpl % template_dict
 571             # Temporary fix for #4787
 572             # 'Treat' all problem characters by passing filename through preferredencoding
 573             # to workaround encoding issues with subprocess on python2 @ Windows
 574             if sys.version_info < (3, 0) and sys.platform == 'win32':
 575                 filename = encodeFilename(filename, True).decode(preferredencoding())
 576             return filename
 577         except ValueError as err:
 578             self.report_error('Error in output template: ' + str(err) + ' (encoding: ' + repr(preferredencoding()) + ')')
 579             return None
 580
 581     def _match_entry(self, info_dict, incomplete):
 582         """ Returns None iff the file should be downloaded """
 583
 584         video_title = info_dict.get('title', info_dict.get('id', 'video'))
 585         if 'title' in info_dict:
 586             # This can happen when we're just evaluating the playlist
 587             title = info_dict['title']
 588             matchtitle = self.params.get('matchtitle', False)
 589             if matchtitle:
 590                 if not re.search(matchtitle, title, re.IGNORECASE):
 591                     return '"' + title + '" title did not match pattern "' + matchtitle + '"'
 592             rejecttitle = self.params.get('rejecttitle', False)
 593             if rejecttitle:
 594                 if re.search(rejecttitle, title, re.IGNORECASE):
 595                     return '"' + title + '" title matched reject pattern "' + rejecttitle + '"'
 596         date = info_dict.get('upload_date', None)
 597         if date is not None:
 598             dateRange = self.params.get('daterange', DateRange())
 599             if date not in dateRange:
 600                 return '%s upload date is not in range %s' % (date_from_str(date).isoformat(), dateRange)
 601         view_count = info_dict.get('view_count', None)
 602         if view_count is not None:
 603             min_views = self.params.get('min_views')
 604             if min_views is not None and view_count < min_views:
 605                 return 'Skipping %s, because it has not reached minimum view count (%d/%d)' % (video_title, view_count, min_views)
 606             max_views = self.params.get('max_views')
 607             if max_views is not None and view_count > max_views:
 608                 return 'Skipping %s, because it has exceeded the maximum view count (%d/%d)' % (video_title, view_count, max_views)
 609         if age_restricted(info_dict.get('age_limit'), self.params.get('age_limit')):
 610             return 'Skipping "%s" because it is age restricted' % video_title
 611         if self.in_download_archive(info_dict):
 612             return '%s has already been recorded in archive' % video_title
 613
 614         if not incomplete:
 615             match_filter = self.params.get('match_filter')
 616             if match_filter is not None:
 617                 ret = match_filter(info_dict)
 618                 if ret is not None:
 619                     return ret
 620
 621         return None
 622
 623     @staticmethod
 624     def add_extra_info(info_dict, extra_info):
 625         '''Set the keys from extra_info in info dict if they are missing'''
 626         for key, value in extra_info.items():
 627             info_dict.setdefault(key, value)
 628
 629     def extract_info(self, url, download=True, ie_key=None, extra_info={},
 630                      process=True):
 631         '''
 632         Returns a list with a dictionary for each video we find.
 633         If 'download', also downloads the videos.
 634         extra_info is a dict containing the extra values to add to each result
 635         '''
 636
 637         if ie_key:
 638             ies = [self.get_info_extractor(ie_key)]
 639         else:
 640             ies = self._ies
 641
 642         for ie in ies:
 643             if not ie.suitable(url):
 644                 continue
 645
 646             if not ie.working():
 647                 self.report_warning('The program functionality for this site has been marked as broken, '
 648                                     'and will probably not work.')
 649
 650             try:
 651                 ie_result = ie.extract(url)
 652                 if ie_result is None:  # Finished already (backwards compatibility; listformats and friends should be moved here)
 653                     break
 654                 if isinstance(ie_result, list):
 655                     # Backwards compatibility: old IE result format
 656                     ie_result = {
 657                         '_type': 'compat_list',
 658                         'entries': ie_result,
 659                     }
 660                 self.add_default_extra_info(ie_result, ie, url)
 661                 if process:
 662                     return self.process_ie_result(ie_result, download, extra_info)
 663                 else:
 664                     return ie_result
 665             except ExtractorError as de:  # An error we somewhat expected
 666                 self.report_error(compat_str(de), de.format_traceback())
 667                 break
 668             except MaxDownloadsReached:
 669                 raise
 670             except Exception as e:
 671                 if self.params.get('ignoreerrors', False):
 672                     self.report_error(compat_str(e), tb=compat_str(traceback.format_exc()))
 673                     break
 674                 else:
 675                     raise
 676         else:
 677             self.report_error('no suitable InfoExtractor for URL %s' % url)
 678
 679     def add_default_extra_info(self, ie_result, ie, url):
 680         self.add_extra_info(ie_result, {
 681             'extractor': ie.IE_NAME,
 682             'webpage_url': url,
 683             'webpage_url_basename': url_basename(url),
 684             'extractor_key': ie.ie_key(),
 685         })
 686
 687     def process_ie_result(self, ie_result, download=True, extra_info={}):
 688         """
 689         Take the result of the ie(may be modified) and resolve all unresolved
 690         references (URLs, playlist items).
 691
 692         It will also download the videos if 'download'.
 693         Returns the resolved ie_result.
 694         """
 695
 696         result_type = ie_result.get('_type', 'video')
 697
 698         if result_type in ('url', 'url_transparent'):
 699             extract_flat = self.params.get('extract_flat', False)
 700             if ((extract_flat == 'in_playlist' and 'playlist' in extra_info) or
 701                     extract_flat is True):
 702                 if self.params.get('forcejson', False):
 703                     self.to_stdout(json.dumps(ie_result))
 704                 return ie_result
 705
 706         if result_type == 'video':
 707             self.add_extra_info(ie_result, extra_info)
 708             return self.process_video_result(ie_result, download=download)
 709         elif result_type == 'url':
 710             # We have to add extra_info to the results because it may be
 711             # contained in a playlist
 712             return self.extract_info(ie_result['url'],
 713                                      download,
 714                                      ie_key=ie_result.get('ie_key'),
 715                                      extra_info=extra_info)
 716         elif result_type == 'url_transparent':
 717             # Use the information from the embedding page
 718             info = self.extract_info(
 719                 ie_result['url'], ie_key=ie_result.get('ie_key'),
 720                 extra_info=extra_info, download=False, process=False)
 721
 722             force_properties = dict(
 723                 (k, v) for k, v in ie_result.items() if v is not None)
 724             for f in ('_type', 'url'):
 725                 if f in force_properties:
 726                     del force_properties[f]
 727             new_result = info.copy()
 728             new_result.update(force_properties)
 729
 730             assert new_result.get('_type') != 'url_transparent'
 731
 732             return self.process_ie_result(
 733                 new_result, download=download, extra_info=extra_info)
 734         elif result_type == 'playlist' or result_type == 'multi_video':
 735             # We process each entry in the playlist
 736             playlist = ie_result.get('title', None) or ie_result.get('id', None)
 737             self.to_screen('[download] Downloading playlist: %s' % playlist)
 738
 739             playlist_results = []
 740
 741             playliststart = self.params.get('playliststart', 1) - 1
 742             playlistend = self.params.get('playlistend', None)
 743             # For backwards compatibility, interpret -1 as whole list
 744             if playlistend == -1:
 745                 playlistend = None
 746
 747             playlistitems_str = self.params.get('playlist_items', None)
 748             playlistitems = None
 749             if playlistitems_str is not None:
 750                 def iter_playlistitems(format):
 751                     for string_segment in format.split(','):
 752                         if '-' in string_segment:
 753                             start, end = string_segment.split('-')
 754                             for item in range(int(start), int(end) + 1):
 755                                 yield int(item)
 756                         else:
 757                             yield int(string_segment)
 758                 playlistitems = iter_playlistitems(playlistitems_str)
 759
 760             ie_entries = ie_result['entries']
 761             if isinstance(ie_entries, list):
 762                 n_all_entries = len(ie_entries)
 763                 if playlistitems:
 764                     entries = [ie_entries[i - 1] for i in playlistitems]
 765                 else:
 766                     entries = ie_entries[playliststart:playlistend]
 767                 n_entries = len(entries)
 768                 self.to_screen(
 769                     "[%s] playlist %s: Collected %d video ids (downloading %d of them)" %
 770                     (ie_result['extractor'], playlist, n_all_entries, n_entries))
 771             elif isinstance(ie_entries, PagedList):
 772                 if playlistitems:
 773                     entries = []
 774                     for item in playlistitems:
 775                         entries.extend(ie_entries.getslice(
 776                             item - 1, item
 777                         ))
 778                 else:
 779                     entries = ie_entries.getslice(
 780                         playliststart, playlistend)
 781                 n_entries = len(entries)
 782                 self.to_screen(
 783                     "[%s] playlist %s: Downloading %d videos" %
 784                     (ie_result['extractor'], playlist, n_entries))
 785             else:  # iterable
 786                 if playlistitems:
 787                     entry_list = list(ie_entries)
 788                     entries = [entry_list[i - 1] for i in playlistitems]
 789                 else:
 790                     entries = list(itertools.islice(
 791                         ie_entries, playliststart, playlistend))
 792                 n_entries = len(entries)
 793                 self.to_screen(
 794                     "[%s] playlist %s: Downloading %d videos" %
 795                     (ie_result['extractor'], playlist, n_entries))
 796
 797             if self.params.get('playlistreverse', False):
 798                 entries = entries[::-1]
 799
 800             for i, entry in enumerate(entries, 1):
 801                 self.to_screen('[download] Downloading video %s of %s' % (i, n_entries))
 802                 extra = {
 803                     'n_entries': n_entries,
 804                     'playlist': playlist,
 805                     'playlist_id': ie_result.get('id'),
 806                     'playlist_title': ie_result.get('title'),
 807                     'playlist_index': i + playliststart,
 808                     'extractor': ie_result['extractor'],
 809                     'webpage_url': ie_result['webpage_url'],
 810                     'webpage_url_basename': url_basename(ie_result['webpage_url']),
 811                     'extractor_key': ie_result['extractor_key'],
 812                 }
 813
 814                 reason = self._match_entry(entry, incomplete=True)
 815                 if reason is not None:
 816                     self.to_screen('[download] ' + reason)
 817                     continue
 818
 819                 entry_result = self.process_ie_result(entry,
 820                                                       download=download,
 821                                                       extra_info=extra)
 822                 playlist_results.append(entry_result)
 823             ie_result['entries'] = playlist_results
 824             return ie_result
 825         elif result_type == 'compat_list':
 826             self.report_warning(
 827                 'Extractor %s returned a compat_list result. '
 828                 'It needs to be updated.' % ie_result.get('extractor'))
 829
 830             def _fixup(r):
 831                 self.add_extra_info(
 832                     r,
 833                     {
 834                         'extractor': ie_result['extractor'],
 835                         'webpage_url': ie_result['webpage_url'],
 836                         'webpage_url_basename': url_basename(ie_result['webpage_url']),
 837                         'extractor_key': ie_result['extractor_key'],
 838                     }
 839                 )
 840                 return r
 841             ie_result['entries'] = [
 842                 self.process_ie_result(_fixup(r), download, extra_info)
 843                 for r in ie_result['entries']
 844             ]
 845             return ie_result
 846         else:
 847             raise Exception('Invalid result type: %s' % result_type)
 848
 849     def _apply_format_filter(self, format_spec, available_formats):
 850         " Returns a tuple of the remaining format_spec and filtered formats "
 851
 852         OPERATORS = {
 853             '<': operator.lt,
 854             '<=': operator.le,
 855             '>': operator.gt,
 856             '>=': operator.ge,
 857             '=': operator.eq,
 858             '!=': operator.ne,
 859         }
 860         operator_rex = re.compile(r'''(?x)\s*\[
 861             (?P<key>width|height|tbr|abr|vbr|asr|filesize|fps)
 862             \s*(?P<op>%s)(?P<none_inclusive>\s*\?)?\s*
 863             (?P<value>[0-9.]+(?:[kKmMgGtTpPeEzZyY]i?[Bb]?)?)
 864             \]$
 865             ''' % '|'.join(map(re.escape, OPERATORS.keys())))
 866         m = operator_rex.search(format_spec)
 867         if m:
 868             try:
 869                 comparison_value = int(m.group('value'))
 870             except ValueError:
 871                 comparison_value = parse_filesize(m.group('value'))
 872                 if comparison_value is None:
 873                     comparison_value = parse_filesize(m.group('value') + 'B')
 874                 if comparison_value is None:
 875                     raise ValueError(
 876                         'Invalid value %r in format specification %r' % (
 877                             m.group('value'), format_spec))
 878             op = OPERATORS[m.group('op')]
 879
 880         if not m:
 881             STR_OPERATORS = {
 882                 '=': operator.eq,
 883                 '!=': operator.ne,
 884             }
 885             str_operator_rex = re.compile(r'''(?x)\s*\[
 886                 \s*(?P<key>ext|acodec|vcodec|container|protocol)
 887                 \s*(?P<op>%s)(?P<none_inclusive>\s*\?)?
 888                 \s*(?P<value>[a-zA-Z0-9_-]+)
 889                 \s*\]$
 890                 ''' % '|'.join(map(re.escape, STR_OPERATORS.keys())))
 891             m = str_operator_rex.search(format_spec)
 892             if m:
 893                 comparison_value = m.group('value')
 894                 op = STR_OPERATORS[m.group('op')]
 895
 896         if not m:
 897             raise ValueError('Invalid format specification %r' % format_spec)
 898
 899         def _filter(f):
 900             actual_value = f.get(m.group('key'))
 901             if actual_value is None:
 902                 return m.group('none_inclusive')
 903             return op(actual_value, comparison_value)
 904         new_formats = [f for f in available_formats if _filter(f)]
 905
 906         new_format_spec = format_spec[:-len(m.group(0))]
 907         if not new_format_spec:
 908             new_format_spec = 'best'
 909
 910         return (new_format_spec, new_formats)
 911
 912     def select_format(self, format_spec, available_formats):
 913         while format_spec.endswith(']'):
 914             format_spec, available_formats = self._apply_format_filter(
 915                 format_spec, available_formats)
 916         if not available_formats:
 917             return None
 918
 919         if format_spec == 'best' or format_spec is None:
 920             return available_formats[-1]
 921         elif format_spec == 'worst':
 922             audiovideo_formats = [
 923                 f for f in available_formats
 924                 if f.get('vcodec') != 'none' and f.get('acodec') != 'none']
 925             if audiovideo_formats:
 926                 return audiovideo_formats[0]
 927             return available_formats[0]
 928         elif format_spec == 'bestaudio':
 929             audio_formats = [
 930                 f for f in available_formats
 931                 if f.get('vcodec') == 'none']
 932             if audio_formats:
 933                 return audio_formats[-1]
 934         elif format_spec == 'worstaudio':
 935             audio_formats = [
 936                 f for f in available_formats
 937                 if f.get('vcodec') == 'none']
 938             if audio_formats:
 939                 return audio_formats[0]
 940         elif format_spec == 'bestvideo':
 941             video_formats = [
 942                 f for f in available_formats
 943                 if f.get('acodec') == 'none']
 944             if video_formats:
 945                 return video_formats[-1]
 946         elif format_spec == 'worstvideo':
 947             video_formats = [
 948                 f for f in available_formats
 949                 if f.get('acodec') == 'none']
 950             if video_formats:
 951                 return video_formats[0]
 952         else:
 953             extensions = ['mp4', 'flv', 'webm', '3gp', 'm4a', 'mp3', 'ogg', 'aac', 'wav']
 954             if format_spec in extensions:
 955                 filter_f = lambda f: f['ext'] == format_spec
 956             else:
 957                 filter_f = lambda f: f['format_id'] == format_spec
 958             matches = list(filter(filter_f, available_formats))
 959             if matches:
 960                 return matches[-1]
 961         return None
 962
 963     def _calc_headers(self, info_dict):
 964         res = std_headers.copy()
 965
 966         add_headers = info_dict.get('http_headers')
 967         if add_headers:
 968             res.update(add_headers)
 969
 970         cookies = self._calc_cookies(info_dict)
 971         if cookies:
 972             res['Cookie'] = cookies
 973
 974         return res
 975
 976     def _calc_cookies(self, info_dict):
 977         pr = compat_urllib_request.Request(info_dict['url'])
 978         self.cookiejar.add_cookie_header(pr)
 979         return pr.get_header('Cookie')
 980
 981     def process_video_result(self, info_dict, download=True):
 982         assert info_dict.get('_type', 'video') == 'video'
 983
 984         if 'id' not in info_dict:
 985             raise ExtractorError('Missing "id" field in extractor result')
 986         if 'title' not in info_dict:
 987             raise ExtractorError('Missing "title" field in extractor result')
 988
 989         if 'playlist' not in info_dict:
 990             # It isn't part of a playlist
 991             info_dict['playlist'] = None
 992             info_dict['playlist_index'] = None
 993
 994         thumbnails = info_dict.get('thumbnails')
 995         if thumbnails is None:
 996             thumbnail = info_dict.get('thumbnail')
 997             if thumbnail:
 998                 info_dict['thumbnails'] = thumbnails = [{'url': thumbnail}]
 999         if thumbnails:
1000             thumbnails.sort(key=lambda t: (
1001                 t.get('preference'), t.get('width'), t.get('height'),
1002                 t.get('id'), t.get('url')))
1003             for i, t in enumerate(thumbnails):
1004                 if 'width' in t and 'height' in t:
1005                     t['resolution'] = '%dx%d' % (t['width'], t['height'])
1006                 if t.get('id') is None:
1007                     t['id'] = '%d' % i
1008
1009         if thumbnails and 'thumbnail' not in info_dict:
1010             info_dict['thumbnail'] = thumbnails[-1]['url']
1011
1012         if 'display_id' not in info_dict and 'id' in info_dict:
1013             info_dict['display_id'] = info_dict['id']
1014
1015         if info_dict.get('upload_date') is None and info_dict.get('timestamp') is not None:
1016             # Working around negative timestamps in Windows
1017             # (see http://bugs.python.org/issue1646728)
1018             if info_dict['timestamp'] < 0 and os.name == 'nt':
1019                 info_dict['timestamp'] = 0
1020             upload_date = datetime.datetime.utcfromtimestamp(
1021                 info_dict['timestamp'])
1022             info_dict['upload_date'] = upload_date.strftime('%Y%m%d')
1023
1024         if self.params.get('listsubtitles', False):
1025             if 'automatic_captions' in info_dict:
1026                 self.list_subtitles(info_dict['id'], info_dict.get('automatic_captions'), 'automatic captions')
1027             self.list_subtitles(info_dict['id'], info_dict.get('subtitles'), 'subtitles')
1028             return
1029         info_dict['requested_subtitles'] = self.process_subtitles(
1030             info_dict['id'], info_dict.get('subtitles'),
1031             info_dict.get('automatic_captions'))
1032
1033         # This extractors handle format selection themselves
1034         if info_dict['extractor'] in ['Youku']:
1035             if download:
1036                 self.process_info(info_dict)
1037             return info_dict
1038
1039         # We now pick which formats have to be downloaded
1040         if info_dict.get('formats') is None:
1041             # There's only one format available
1042             formats = [info_dict]
1043         else:
1044             formats = info_dict['formats']
1045
1046         if not formats:
1047             raise ExtractorError('No video formats found!')
1048
1049         # We check that all the formats have the format and format_id fields
1050         for i, format in enumerate(formats):
1051             if 'url' not in format:
1052                 raise ExtractorError('Missing "url" key in result (index %d)' % i)
1053
1054             if format.get('format_id') is None:
1055                 format['format_id'] = compat_str(i)
1056             if format.get('format') is None:
1057                 format['format'] = '{id} - {res}{note}'.format(
1058                     id=format['format_id'],
1059                     res=self.format_resolution(format),
1060                     note=' ({0})'.format(format['format_note']) if format.get('format_note') is not None else '',
1061                 )
1062             # Automatically determine file extension if missing
1063             if 'ext' not in format:
1064                 format['ext'] = determine_ext(format['url']).lower()
1065             # Add HTTP headers, so that external programs can use them from the
1066             # json output
1067             full_format_info = info_dict.copy()
1068             full_format_info.update(format)
1069             format['http_headers'] = self._calc_headers(full_format_info)
1070
1071         format_limit = self.params.get('format_limit', None)
1072         if format_limit:
1073             formats = list(takewhile_inclusive(
1074                 lambda f: f['format_id'] != format_limit, formats
1075             ))
1076
1077         # TODO Central sorting goes here
1078
1079         if formats[0] is not info_dict:
1080             # only set the 'formats' fields if the original info_dict list them
1081             # otherwise we end up with a circular reference, the first (and unique)
1082             # element in the 'formats' field in info_dict is info_dict itself,
1083             # wich can't be exported to json
1084             info_dict['formats'] = formats
1085         if self.params.get('listformats'):
1086             self.list_formats(info_dict)
1087             return
1088         if self.params.get('list_thumbnails'):
1089             self.list_thumbnails(info_dict)
1090             return
1091
1092         req_format = self.params.get('format')
1093         if req_format is None:
1094             req_format = 'best'
1095         formats_to_download = []
1096         if req_format == 'all':
1097             formats_to_download = formats
1098         else:
1099             for rfstr in req_format.split(','):
1100                 # We can accept formats requested in the format: 34/5/best, we pick
1101                 # the first that is available, starting from left
1102                 req_formats = rfstr.split('/')
1103                 for rf in req_formats:
1104                     if re.match(r'.+?\+.+?', rf) is not None:
1105                         # Two formats have been requested like '137+139'
1106                         format_1, format_2 = rf.split('+')
1107                         formats_info = (self.select_format(format_1, formats),
1108                                         self.select_format(format_2, formats))
1109                         if all(formats_info):
1110                             # The first format must contain the video and the
1111                             # second the audio
1112                             if formats_info[0].get('vcodec') == 'none':
1113                                 self.report_error('The first format must '
1114                                                   'contain the video, try using '
1115                                                   '"-f %s+%s"' % (format_2, format_1))
1116                                 return
1117                             output_ext = (
1118                                 formats_info[0]['ext']
1119                                 if self.params.get('merge_output_format') is None
1120                                 else self.params['merge_output_format'])
1121                             selected_format = {
1122                                 'requested_formats': formats_info,
1123                                 'format': '%s+%s' % (formats_info[0].get('format'),
1124                                                      formats_info[1].get('format')),
1125                                 'format_id': '%s+%s' % (formats_info[0].get('format_id'),
1126                                                         formats_info[1].get('format_id')),
1127                                 'width': formats_info[0].get('width'),
1128                                 'height': formats_info[0].get('height'),
1129                                 'resolution': formats_info[0].get('resolution'),
1130                                 'fps': formats_info[0].get('fps'),
1131                                 'vcodec': formats_info[0].get('vcodec'),
1132                                 'vbr': formats_info[0].get('vbr'),
1133                                 'stretched_ratio': formats_info[0].get('stretched_ratio'),
1134                                 'acodec': formats_info[1].get('acodec'),
1135                                 'abr': formats_info[1].get('abr'),
1136                                 'ext': output_ext,
1137                             }
1138                         else:
1139                             selected_format = None
1140                     else:
1141                         selected_format = self.select_format(rf, formats)
1142                     if selected_format is not None:
1143                         formats_to_download.append(selected_format)
1144                         break
1145         if not formats_to_download:
1146             raise ExtractorError('requested format not available',
1147                                  expected=True)
1148
1149         if download:
1150             if len(formats_to_download) > 1:
1151                 self.to_screen('[info] %s: downloading video in %s formats' % (info_dict['id'], len(formats_to_download)))
1152             for format in formats_to_download:
1153                 new_info = dict(info_dict)
1154                 new_info.update(format)
1155                 self.process_info(new_info)
1156         # We update the info dict with the best quality format (backwards compatibility)
1157         info_dict.update(formats_to_download[-1])
1158         return info_dict
1159
1160     def process_subtitles(self, video_id, normal_subtitles, automatic_captions):
1161         """Select the requested subtitles and their format"""
1162         available_subs = {}
1163         if normal_subtitles and self.params.get('writesubtitles'):
1164             available_subs.update(normal_subtitles)
1165         if automatic_captions and self.params.get('writeautomaticsub'):
1166             for lang, cap_info in automatic_captions.items():
1167                 if lang not in available_subs:
1168                     available_subs[lang] = cap_info
1169
1170         if (not self.params.get('writesubtitles') and not
1171                 self.params.get('writeautomaticsub') or not
1172                 available_subs):
1173             return None
1174
1175         if self.params.get('allsubtitles', False):
1176             requested_langs = available_subs.keys()
1177         else:
1178             if self.params.get('subtitleslangs', False):
1179                 requested_langs = self.params.get('subtitleslangs')
1180             elif 'en' in available_subs:
1181                 requested_langs = ['en']
1182             else:
1183                 requested_langs = [list(available_subs.keys())[0]]
1184
1185         formats_query = self.params.get('subtitlesformat', 'best')
1186         formats_preference = formats_query.split('/') if formats_query else []
1187         subs = {}
1188         for lang in requested_langs:
1189             formats = available_subs.get(lang)
1190             if formats is None:
1191                 self.report_warning('%s subtitles not available for %s' % (lang, video_id))
1192                 continue
1193             for ext in formats_preference:
1194                 if ext == 'best':
1195                     f = formats[-1]
1196                     break
1197                 matches = list(filter(lambda f: f['ext'] == ext, formats))
1198                 if matches:
1199                     f = matches[-1]
1200                     break
1201             else:
1202                 f = formats[-1]
1203                 self.report_warning(
1204                     'No subtitle format found matching "%s" for language %s, '
1205                     'using %s' % (formats_query, lang, f['ext']))
1206             subs[lang] = f
1207         return subs
1208
1209     def process_info(self, info_dict):
1210         """Process a single resolved IE result."""
1211
1212         assert info_dict.get('_type', 'video') == 'video'
1213
1214         max_downloads = self.params.get('max_downloads')
1215         if max_downloads is not None:
1216             if self._num_downloads >= int(max_downloads):
1217                 raise MaxDownloadsReached()
1218
1219         info_dict['fulltitle'] = info_dict['title']
1220         if len(info_dict['title']) > 200:
1221             info_dict['title'] = info_dict['title'][:197] + '...'
1222
1223         if 'format' not in info_dict:
1224             info_dict['format'] = info_dict['ext']
1225
1226         reason = self._match_entry(info_dict, incomplete=False)
1227         if reason is not None:
1228             self.to_screen('[download] ' + reason)
1229             return
1230
1231         self._num_downloads += 1
1232
1233         info_dict['_filename'] = filename = self.prepare_filename(info_dict)
1234
1235         # Forced printings
1236         if self.params.get('forcetitle', False):
1237             self.to_stdout(info_dict['fulltitle'])
1238         if self.params.get('forceid', False):
1239             self.to_stdout(info_dict['id'])
1240         if self.params.get('forceurl', False):
1241             if info_dict.get('requested_formats') is not None:
1242                 for f in info_dict['requested_formats']:
1243                     self.to_stdout(f['url'] + f.get('play_path', ''))
1244             else:
1245                 # For RTMP URLs, also include the playpath
1246                 self.to_stdout(info_dict['url'] + info_dict.get('play_path', ''))
1247         if self.params.get('forcethumbnail', False) and info_dict.get('thumbnail') is not None:
1248             self.to_stdout(info_dict['thumbnail'])
1249         if self.params.get('forcedescription', False) and info_dict.get('description') is not None:
1250             self.to_stdout(info_dict['description'])
1251         if self.params.get('forcefilename', False) and filename is not None:
1252             self.to_stdout(filename)
1253         if self.params.get('forceduration', False) and info_dict.get('duration') is not None:
1254             self.to_stdout(formatSeconds(info_dict['duration']))
1255         if self.params.get('forceformat', False):
1256             self.to_stdout(info_dict['format'])
1257         if self.params.get('forcejson', False):
1258             self.to_stdout(json.dumps(info_dict))
1259
1260         # Do nothing else if in simulate mode
1261         if self.params.get('simulate', False):
1262             return
1263
1264         if filename is None:
1265             return
1266
1267         try:
1268             dn = os.path.dirname(sanitize_path(encodeFilename(filename)))
1269             if dn and not os.path.exists(dn):
1270                 os.makedirs(dn)
1271         except (OSError, IOError) as err:
1272             self.report_error('unable to create directory ' + compat_str(err))
1273             return
1274
1275         if self.params.get('writedescription', False):
1276             descfn = filename + '.description'
1277             if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(descfn)):
1278                 self.to_screen('[info] Video description is already present')
1279             elif info_dict.get('description') is None:
1280                 self.report_warning('There\'s no description to write.')
1281             else:
1282                 try:
1283                     self.to_screen('[info] Writing video description to: ' + descfn)
1284                     with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
1285                         descfile.write(info_dict['description'])
1286                 except (OSError, IOError):
1287                     self.report_error('Cannot write description file ' + descfn)
1288                     return
1289
1290         if self.params.get('writeannotations', False):
1291             annofn = filename + '.annotations.xml'
1292             if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(annofn)):
1293                 self.to_screen('[info] Video annotations are already present')
1294             else:
1295                 try:
1296                     self.to_screen('[info] Writing video annotations to: ' + annofn)
1297                     with io.open(encodeFilename(annofn), 'w', encoding='utf-8') as annofile:
1298                         annofile.write(info_dict['annotations'])
1299                 except (KeyError, TypeError):
1300                     self.report_warning('There are no annotations to write.')
1301                 except (OSError, IOError):
1302                     self.report_error('Cannot write annotations file: ' + annofn)
1303                     return
1304
1305         subtitles_are_requested = any([self.params.get('writesubtitles', False),
1306                                        self.params.get('writeautomaticsub')])
1307
1308         if subtitles_are_requested and info_dict.get('requested_subtitles'):
1309             # subtitles download errors are already managed as troubles in relevant IE
1310             # that way it will silently go on when used with unsupporting IE
1311             subtitles = info_dict['requested_subtitles']
1312             ie = self.get_info_extractor(info_dict['extractor_key'])
1313             for sub_lang, sub_info in subtitles.items():
1314                 sub_format = sub_info['ext']
1315                 if sub_info.get('data') is not None:
1316                     sub_data = sub_info['data']
1317                 else:
1318                     try:
1319                         sub_data = ie._download_webpage(
1320                             sub_info['url'], info_dict['id'], note=False)
1321                     except ExtractorError as err:
1322                         self.report_warning('Unable to download subtitle for "%s": %s' %
1323                                             (sub_lang, compat_str(err.cause)))
1324                         continue
1325                 try:
1326                     sub_filename = subtitles_filename(filename, sub_lang, sub_format)
1327                     if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(sub_filename)):
1328                         self.to_screen('[info] Video subtitle %s.%s is already_present' % (sub_lang, sub_format))
1329                     else:
1330                         self.to_screen('[info] Writing video subtitles to: ' + sub_filename)
1331                         with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
1332                             subfile.write(sub_data)
1333                 except (OSError, IOError):
1334                     self.report_error('Cannot write subtitles file ' + sub_filename)
1335                     return
1336
1337         if self.params.get('writeinfojson', False):
1338             infofn = os.path.splitext(filename)[0] + '.info.json'
1339             if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(infofn)):
1340                 self.to_screen('[info] Video description metadata is already present')
1341             else:
1342                 self.to_screen('[info] Writing video description metadata as JSON to: ' + infofn)
1343                 try:
1344                     write_json_file(info_dict, infofn)
1345                 except (OSError, IOError):
1346                     self.report_error('Cannot write metadata to JSON file ' + infofn)
1347                     return
1348
1349         self._write_thumbnails(info_dict, filename)
1350
1351         if not self.params.get('skip_download', False):
1352             try:
1353                 def dl(name, info):
1354                     fd = get_suitable_downloader(info, self.params)(self, self.params)
1355                     for ph in self._progress_hooks:
1356                         fd.add_progress_hook(ph)
1357                     if self.params.get('verbose'):
1358                         self.to_stdout('[debug] Invoking downloader on %r' % info.get('url'))
1359                     return fd.download(name, info)
1360
1361                 if info_dict.get('requested_formats') is not None:
1362                     downloaded = []
1363                     success = True
1364                     merger = FFmpegMergerPP(self)
1365                     if not merger.available:
1366                         postprocessors = []
1367                         self.report_warning('You have requested multiple '
1368                                             'formats but ffmpeg or avconv are not installed.'
1369                                             ' The formats won\'t be merged')
1370                     else:
1371                         postprocessors = [merger]
1372                     if os.path.exists(encodeFilename(filename)):
1373                         self.to_screen(
1374                             '[download] %s has already been downloaded and '
1375                             'merged' % filename)
1376                     else:
1377                         for f in info_dict['requested_formats']:
1378                             new_info = dict(info_dict)
1379                             new_info.update(f)
1380                             fname = self.prepare_filename(new_info)
1381                             fname = prepend_extension(fname, 'f%s' % f['format_id'])
1382                             downloaded.append(fname)
1383                             partial_success = dl(fname, new_info)
1384                             success = success and partial_success
1385                         info_dict['__postprocessors'] = postprocessors
1386                         info_dict['__files_to_merge'] = downloaded
1387                 else:
1388                     # Just a single file
1389                     success = dl(filename, info_dict)
1390             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
1391                 self.report_error('unable to download video data: %s' % str(err))
1392                 return
1393             except (OSError, IOError) as err:
1394                 raise UnavailableVideoError(err)
1395             except (ContentTooShortError, ) as err:
1396                 self.report_error('content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
1397                 return
1398
1399             if success:
1400                 # Fixup content
1401                 fixup_policy = self.params.get('fixup')
1402                 if fixup_policy is None:
1403                     fixup_policy = 'detect_or_warn'
1404
1405                 stretched_ratio = info_dict.get('stretched_ratio')
1406                 if stretched_ratio is not None and stretched_ratio != 1:
1407                     if fixup_policy == 'warn':
1408                         self.report_warning('%s: Non-uniform pixel ratio (%s)' % (
1409                             info_dict['id'], stretched_ratio))
1410                     elif fixup_policy == 'detect_or_warn':
1411                         stretched_pp = FFmpegFixupStretchedPP(self)
1412                         if stretched_pp.available:
1413                             info_dict.setdefault('__postprocessors', [])
1414                             info_dict['__postprocessors'].append(stretched_pp)
1415                         else:
1416                             self.report_warning(
1417                                 '%s: Non-uniform pixel ratio (%s). Install ffmpeg or avconv to fix this automatically.' % (
1418                                     info_dict['id'], stretched_ratio))
1419                     else:
1420                         assert fixup_policy in ('ignore', 'never')
1421
1422                 if info_dict.get('requested_formats') is None and info_dict.get('container') == 'm4a_dash':
1423                     if fixup_policy == 'warn':
1424                         self.report_warning('%s: writing DASH m4a. Only some players support this container.' % (
1425                             info_dict['id']))
1426                     elif fixup_policy == 'detect_or_warn':
1427                         fixup_pp = FFmpegFixupM4aPP(self)
1428                         if fixup_pp.available:
1429                             info_dict.setdefault('__postprocessors', [])
1430                             info_dict['__postprocessors'].append(fixup_pp)
1431                         else:
1432                             self.report_warning(
1433                                 '%s: writing DASH m4a. Only some players support this container. Install ffmpeg or avconv to fix this automatically.' % (
1434                                     info_dict['id']))
1435                     else:
1436                         assert fixup_policy in ('ignore', 'never')
1437
1438                 try:
1439                     self.post_process(filename, info_dict)
1440                 except (PostProcessingError) as err:
1441                     self.report_error('postprocessing: %s' % str(err))
1442                     return
1443                 self.record_download_archive(info_dict)
1444
1445     def download(self, url_list):
1446         """Download a given list of URLs."""
1447         outtmpl = self.params.get('outtmpl', DEFAULT_OUTTMPL)
1448         if (len(url_list) > 1 and
1449                 '%' not in outtmpl and
1450                 self.params.get('max_downloads') != 1):
1451             raise SameFileError(outtmpl)
1452
1453         for url in url_list:
1454             try:
1455                 # It also downloads the videos
1456                 res = self.extract_info(url)
1457             except UnavailableVideoError:
1458                 self.report_error('unable to download video')
1459             except MaxDownloadsReached:
1460                 self.to_screen('[info] Maximum number of downloaded files reached.')
1461                 raise
1462             else:
1463                 if self.params.get('dump_single_json', False):
1464                     self.to_stdout(json.dumps(res))
1465
1466         return self._download_retcode
1467
1468     def download_with_info_file(self, info_filename):
1469         with contextlib.closing(fileinput.FileInput(
1470                 [info_filename], mode='r',
1471                 openhook=fileinput.hook_encoded('utf-8'))) as f:
1472             # FileInput doesn't have a read method, we can't call json.load
1473             info = json.loads('\n'.join(f))
1474         try:
1475             self.process_ie_result(info, download=True)
1476         except DownloadError:
1477             webpage_url = info.get('webpage_url')
1478             if webpage_url is not None:
1479                 self.report_warning('The info failed to download, trying with "%s"' % webpage_url)
1480                 return self.download([webpage_url])
1481             else:
1482                 raise
1483         return self._download_retcode
1484
1485     def post_process(self, filename, ie_info):
1486         """Run all the postprocessors on the given file."""
1487         info = dict(ie_info)
1488         info['filepath'] = filename
1489         pps_chain = []
1490         if ie_info.get('__postprocessors') is not None:
1491             pps_chain.extend(ie_info['__postprocessors'])
1492         pps_chain.extend(self._pps)
1493         for pp in pps_chain:
1494             old_filename = info['filepath']
1495             try:
1496                 files_to_delete, info = pp.run(info)
1497             except PostProcessingError as e:
1498                 self.report_error(e.msg)
1499             if files_to_delete and not self.params.get('keepvideo', False):
1500                 for old_filename in files_to_delete:
1501                     self.to_screen('Deleting original file %s (pass -k to keep)' % old_filename)
1502                     try:
1503                         os.remove(encodeFilename(old_filename))
1504                     except (IOError, OSError):
1505                         self.report_warning('Unable to remove downloaded original file')
1506
1507     def _make_archive_id(self, info_dict):
1508         # Future-proof against any change in case
1509         # and backwards compatibility with prior versions
1510         extractor = info_dict.get('extractor_key')
1511         if extractor is None:
1512             if 'id' in info_dict:
1513                 extractor = info_dict.get('ie_key')  # key in a playlist
1514         if extractor is None:
1515             return None  # Incomplete video information
1516         return extractor.lower() + ' ' + info_dict['id']
1517
1518     def in_download_archive(self, info_dict):
1519         fn = self.params.get('download_archive')
1520         if fn is None:
1521             return False
1522
1523         vid_id = self._make_archive_id(info_dict)
1524         if vid_id is None:
1525             return False  # Incomplete video information
1526
1527         try:
1528             with locked_file(fn, 'r', encoding='utf-8') as archive_file:
1529                 for line in archive_file:
1530                     if line.strip() == vid_id:
1531                         return True
1532         except IOError as ioe:
1533             if ioe.errno != errno.ENOENT:
1534                 raise
1535         return False
1536
1537     def record_download_archive(self, info_dict):
1538         fn = self.params.get('download_archive')
1539         if fn is None:
1540             return
1541         vid_id = self._make_archive_id(info_dict)
1542         assert vid_id
1543         with locked_file(fn, 'a', encoding='utf-8') as archive_file:
1544             archive_file.write(vid_id + '\n')
1545
1546     @staticmethod
1547     def format_resolution(format, default='unknown'):
1548         if format.get('vcodec') == 'none':
1549             return 'audio only'
1550         if format.get('resolution') is not None:
1551             return format['resolution']
1552         if format.get('height') is not None:
1553             if format.get('width') is not None:
1554                 res = '%sx%s' % (format['width'], format['height'])
1555             else:
1556                 res = '%sp' % format['height']
1557         elif format.get('width') is not None:
1558             res = '?x%d' % format['width']
1559         else:
1560             res = default
1561         return res
1562
1563     def _format_note(self, fdict):
1564         res = ''
1565         if fdict.get('ext') in ['f4f', 'f4m']:
1566             res += '(unsupported) '
1567         if fdict.get('format_note') is not None:
1568             res += fdict['format_note'] + ' '
1569         if fdict.get('tbr') is not None:
1570             res += '%4dk ' % fdict['tbr']
1571         if fdict.get('container') is not None:
1572             if res:
1573                 res += ', '
1574             res += '%s container' % fdict['container']
1575         if (fdict.get('vcodec') is not None and
1576                 fdict.get('vcodec') != 'none'):
1577             if res:
1578                 res += ', '
1579             res += fdict['vcodec']
1580             if fdict.get('vbr') is not None:
1581                 res += '@'
1582         elif fdict.get('vbr') is not None and fdict.get('abr') is not None:
1583             res += 'video@'
1584         if fdict.get('vbr') is not None:
1585             res += '%4dk' % fdict['vbr']
1586         if fdict.get('fps') is not None:
1587             res += ', %sfps' % fdict['fps']
1588         if fdict.get('acodec') is not None:
1589             if res:
1590                 res += ', '
1591             if fdict['acodec'] == 'none':
1592                 res += 'video only'
1593             else:
1594                 res += '%-5s' % fdict['acodec']
1595         elif fdict.get('abr') is not None:
1596             if res:
1597                 res += ', '
1598             res += 'audio'
1599         if fdict.get('abr') is not None:
1600             res += '@%3dk' % fdict['abr']
1601         if fdict.get('asr') is not None:
1602             res += ' (%5dHz)' % fdict['asr']
1603         if fdict.get('filesize') is not None:
1604             if res:
1605                 res += ', '
1606             res += format_bytes(fdict['filesize'])
1607         elif fdict.get('filesize_approx') is not None:
1608             if res:
1609                 res += ', '
1610             res += '~' + format_bytes(fdict['filesize_approx'])
1611         return res
1612
1613     def list_formats(self, info_dict):
1614         formats = info_dict.get('formats', [info_dict])
1615         table = [
1616             [f['format_id'], f['ext'], self.format_resolution(f), self._format_note(f)]
1617             for f in formats
1618             if f.get('preference') is None or f['preference'] >= -1000]
1619         if len(formats) > 1:
1620             table[-1][-1] += (' ' if table[-1][-1] else '') + '(best)'
1621
1622         header_line = ['format code', 'extension', 'resolution', 'note']
1623         self.to_screen(
1624             '[info] Available formats for %s:\n%s' %
1625             (info_dict['id'], render_table(header_line, table)))
1626
1627     def list_thumbnails(self, info_dict):
1628         thumbnails = info_dict.get('thumbnails')
1629         if not thumbnails:
1630             tn_url = info_dict.get('thumbnail')
1631             if tn_url:
1632                 thumbnails = [{'id': '0', 'url': tn_url}]
1633             else:
1634                 self.to_screen(
1635                     '[info] No thumbnails present for %s' % info_dict['id'])
1636                 return
1637
1638         self.to_screen(
1639             '[info] Thumbnails for %s:' % info_dict['id'])
1640         self.to_screen(render_table(
1641             ['ID', 'width', 'height', 'URL'],
1642             [[t['id'], t.get('width', 'unknown'), t.get('height', 'unknown'), t['url']] for t in thumbnails]))
1643
1644     def list_subtitles(self, video_id, subtitles, name='subtitles'):
1645         if not subtitles:
1646             self.to_screen('%s has no %s' % (video_id, name))
1647             return
1648         self.to_screen(
1649             'Available %s for %s:' % (name, video_id))
1650         self.to_screen(render_table(
1651             ['Language', 'formats'],
1652             [[lang, ', '.join(f['ext'] for f in reversed(formats))]
1653                 for lang, formats in subtitles.items()]))
1654
1655     def urlopen(self, req):
1656         """ Start an HTTP download """
1657
1658         # According to RFC 3986, URLs can not contain non-ASCII characters, however this is not
1659         # always respected by websites, some tend to give out URLs with non percent-encoded
1660         # non-ASCII characters (see telemb.py, ard.py [#3412])
1661         # urllib chokes on URLs with non-ASCII characters (see http://bugs.python.org/issue3991)
1662         # To work around aforementioned issue we will replace request's original URL with
1663         # percent-encoded one
1664         req_is_string = isinstance(req, compat_basestring)
1665         url = req if req_is_string else req.get_full_url()
1666         url_escaped = escape_url(url)
1667
1668         # Substitute URL if any change after escaping
1669         if url != url_escaped:
1670             if req_is_string:
1671                 req = url_escaped
1672             else:
1673                 req = compat_urllib_request.Request(
1674                     url_escaped, data=req.data, headers=req.headers,
1675                     origin_req_host=req.origin_req_host, unverifiable=req.unverifiable)
1676
1677         return self._opener.open(req, timeout=self._socket_timeout)
1678
1679     def print_debug_header(self):
1680         if not self.params.get('verbose'):
1681             return
1682
1683         if type('') is not compat_str:
1684             # Python 2.6 on SLES11 SP1 (https://github.com/rg3/youtube-dl/issues/3326)
1685             self.report_warning(
1686                 'Your Python is broken! Update to a newer and supported version')
1687
1688         stdout_encoding = getattr(
1689             sys.stdout, 'encoding', 'missing (%s)' % type(sys.stdout).__name__)
1690         encoding_str = (
1691             '[debug] Encodings: locale %s, fs %s, out %s, pref %s\n' % (
1692                 locale.getpreferredencoding(),
1693                 sys.getfilesystemencoding(),
1694                 stdout_encoding,
1695                 self.get_encoding()))
1696         write_string(encoding_str, encoding=None)
1697
1698         self._write_string('[debug] youtube-dl version ' + __version__ + '\n')
1699         try:
1700             sp = subprocess.Popen(
1701                 ['git', 'rev-parse', '--short', 'HEAD'],
1702                 stdout=subprocess.PIPE, stderr=subprocess.PIPE,
1703                 cwd=os.path.dirname(os.path.abspath(__file__)))
1704             out, err = sp.communicate()
1705             out = out.decode().strip()
1706             if re.match('[0-9a-f]+', out):
1707                 self._write_string('[debug] Git HEAD: ' + out + '\n')
1708         except Exception:
1709             try:
1710                 sys.exc_clear()
1711             except Exception:
1712                 pass
1713         self._write_string('[debug] Python version %s - %s\n' % (
1714             platform.python_version(), platform_name()))
1715
1716         exe_versions = FFmpegPostProcessor.get_versions(self)
1717         exe_versions['rtmpdump'] = rtmpdump_version()
1718         exe_str = ', '.join(
1719             '%s %s' % (exe, v)
1720             for exe, v in sorted(exe_versions.items())
1721             if v
1722         )
1723         if not exe_str:
1724             exe_str = 'none'
1725         self._write_string('[debug] exe versions: %s\n' % exe_str)
1726
1727         proxy_map = {}
1728         for handler in self._opener.handlers:
1729             if hasattr(handler, 'proxies'):
1730                 proxy_map.update(handler.proxies)
1731         self._write_string('[debug] Proxy map: ' + compat_str(proxy_map) + '\n')
1732
1733         if self.params.get('call_home', False):
1734             ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode('utf-8')
1735             self._write_string('[debug] Public IP address: %s\n' % ipaddr)
1736             latest_version = self.urlopen(
1737                 'https://yt-dl.org/latest/version').read().decode('utf-8')
1738             if version_tuple(latest_version) > version_tuple(__version__):
1739                 self.report_warning(
1740                     'You are using an outdated version (newest version: %s)! '
1741                     'See https://yt-dl.org/update if you need help updating.' %
1742                     latest_version)
1743
1744     def _setup_opener(self):
1745         timeout_val = self.params.get('socket_timeout')
1746         self._socket_timeout = 600 if timeout_val is None else float(timeout_val)
1747
1748         opts_cookiefile = self.params.get('cookiefile')
1749         opts_proxy = self.params.get('proxy')
1750
1751         if opts_cookiefile is None:
1752             self.cookiejar = compat_cookiejar.CookieJar()
1753         else:
1754             self.cookiejar = compat_cookiejar.MozillaCookieJar(
1755                 opts_cookiefile)
1756             if os.access(opts_cookiefile, os.R_OK):
1757                 self.cookiejar.load()
1758
1759         cookie_processor = compat_urllib_request.HTTPCookieProcessor(
1760             self.cookiejar)
1761         if opts_proxy is not None:
1762             if opts_proxy == '':
1763                 proxies = {}
1764             else:
1765                 proxies = {'http': opts_proxy, 'https': opts_proxy}
1766         else:
1767             proxies = compat_urllib_request.getproxies()
1768             # Set HTTPS proxy to HTTP one if given (https://github.com/rg3/youtube-dl/issues/805)
1769             if 'http' in proxies and 'https' not in proxies:
1770                 proxies['https'] = proxies['http']
1771         proxy_handler = PerRequestProxyHandler(proxies)
1772
1773         debuglevel = 1 if self.params.get('debug_printtraffic') else 0
1774         https_handler = make_HTTPS_handler(self.params, debuglevel=debuglevel)
1775         ydlh = YoutubeDLHandler(self.params, debuglevel=debuglevel)
1776         opener = compat_urllib_request.build_opener(
1777             proxy_handler, https_handler, cookie_processor, ydlh)
1778
1779         # Delete the default user-agent header, which would otherwise apply in
1780         # cases where our custom HTTP handler doesn't come into play
1781         # (See https://github.com/rg3/youtube-dl/issues/1309 for details)
1782         opener.addheaders = []
1783         self._opener = opener
1784
1785     def encode(self, s):
1786         if isinstance(s, bytes):
1787             return s  # Already encoded
1788
1789         try:
1790             return s.encode(self.get_encoding())
1791         except UnicodeEncodeError as err:
1792             err.reason = err.reason + '. Check your system encoding configuration or use the --encoding option.'
1793             raise
1794
1795     def get_encoding(self):
1796         encoding = self.params.get('encoding')
1797         if encoding is None:
1798             encoding = preferredencoding()
1799         return encoding
1800
1801     def _write_thumbnails(self, info_dict, filename):
1802         if self.params.get('writethumbnail', False):
1803             thumbnails = info_dict.get('thumbnails')
1804             if thumbnails:
1805                 thumbnails = [thumbnails[-1]]
1806         elif self.params.get('write_all_thumbnails', False):
1807             thumbnails = info_dict.get('thumbnails')
1808         else:
1809             return
1810
1811         if not thumbnails:
1812             # No thumbnails present, so return immediately
1813             return
1814
1815         for t in thumbnails:
1816             thumb_ext = determine_ext(t['url'], 'jpg')
1817             suffix = '_%s' % t['id'] if len(thumbnails) > 1 else ''
1818             thumb_display_id = '%s ' % t['id'] if len(thumbnails) > 1 else ''
1819             thumb_filename = os.path.splitext(filename)[0] + suffix + '.' + thumb_ext
1820
1821             if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(thumb_filename)):
1822                 self.to_screen('[%s] %s: Thumbnail %sis already present' %
1823                                (info_dict['extractor'], info_dict['id'], thumb_display_id))
1824             else:
1825                 self.to_screen('[%s] %s: Downloading thumbnail %s...' %
1826                                (info_dict['extractor'], info_dict['id'], thumb_display_id))
1827                 try:
1828                     uf = self.urlopen(t['url'])
1829                     with open(thumb_filename, 'wb') as thumbf:
1830                         shutil.copyfileobj(uf, thumbf)
1831                     self.to_screen('[%s] %s: Writing thumbnail %sto: %s' %
1832                                    (info_dict['extractor'], info_dict['id'], thumb_display_id, thumb_filename))
1833                 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
1834                     self.report_warning('Unable to download thumbnail "%s": %s' %
1835                                         (t['url'], compat_str(err)))