_ Git - youtube-dl/blob - youtube_dl/downloader/hls.py

   1 from __future__ import unicode_literals
   2
   3 import os
   4 import re
   5 import subprocess
   6
   7 from .common import FileDownloader
   8 from .fragment import FragmentFD
   9
  10 from ..compat import compat_urlparse
  11 from ..postprocessor.ffmpeg import FFmpegPostProcessor
  12 from ..utils import (
  13     encodeArgument,
  14     encodeFilename,
  15 )
  16
  17
  18 class HlsFD(FileDownloader):
  19     def real_download(self, filename, info_dict):
  20         url = info_dict['url']
  21         self.report_destination(filename)
  22         tmpfilename = self.temp_name(filename)
  23
  24         ffpp = FFmpegPostProcessor(downloader=self)
  25         if not ffpp.available:
  26             self.report_error('m3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
  27             return False
  28         ffpp.check_version()
  29
  30         args = [
  31             encodeArgument(opt)
  32             for opt in (ffpp.executable, '-y', '-i', url, '-f', 'mp4', '-c', 'copy', '-bsf:a', 'aac_adtstoasc')]
  33         args.append(encodeFilename(tmpfilename, True))
  34
  35         retval = subprocess.call(args)
  36         if retval == 0:
  37             fsize = os.path.getsize(encodeFilename(tmpfilename))
  38             self.to_screen('\r[%s] %s bytes' % (args[0], fsize))
  39             self.try_rename(tmpfilename, filename)
  40             self._hook_progress({
  41                 'downloaded_bytes': fsize,
  42                 'total_bytes': fsize,
  43                 'filename': filename,
  44                 'status': 'finished',
  45             })
  46             return True
  47         else:
  48             self.to_stderr('\n')
  49             self.report_error('%s exited with code %d' % (ffpp.basename, retval))
  50             return False
  51
  52
  53 class NativeHlsFD(FragmentFD):
  54     """ A more limited implementation that does not require ffmpeg """
  55
  56     FD_NAME = 'hlsnative'
  57
  58     def real_download(self, filename, info_dict):
  59         man_url = info_dict['url']
  60         self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
  61         manifest = self.ydl.urlopen(man_url).read()
  62
  63         s = manifest.decode('utf-8', 'ignore')
  64         fragment_urls = []
  65         for line in s.splitlines():
  66             line = line.strip()
  67             if line and not line.startswith('#'):
  68                 segment_url = (
  69                     line
  70                     if re.match(r'^https?://', line)
  71                     else compat_urlparse.urljoin(man_url, line))
  72                 fragment_urls.append(segment_url)
  73                 # We only download the first fragment during the test
  74                 if self.params.get('test', False):
  75                     break
  76
  77         ctx = {
  78             'filename': filename,
  79             'total_frags': len(fragment_urls),
  80         }
  81
  82         self._prepare_and_start_frag_download(ctx)
  83
  84         frags_filenames = []
  85         for i, frag_url in enumerate(fragment_urls):
  86             frag_filename = '%s-Frag%d' % (ctx['tmpfilename'], i)
  87             success = ctx['dl'].download(frag_filename, {'url': frag_url})
  88             if not success:
  89                 return False
  90             with open(frag_filename, 'rb') as down:
  91                 ctx['dest_stream'].write(down.read())
  92             frags_filenames.append(frag_filename)
  93
  94         self._finish_frag_download(ctx)
  95
  96         for frag_file in frags_filenames:
  97             os.remove(frag_file)
  98
  99         return True