_ 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 ..postprocessor.ffmpeg import FFmpegPostProcessor
   8 from .common import FileDownloader
   9 from ..compat import (
  10     compat_urlparse,
  11     compat_urllib_request,
  12 )
  13 from ..utils import (
  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         args = [
  25             '-y', '-i', url, '-f', 'mp4', '-c', 'copy',
  26             '-bsf:a', 'aac_adtstoasc',
  27             encodeFilename(tmpfilename, for_subprocess=True)]
  28
  29         ffpp = FFmpegPostProcessor(downloader=self)
  30         program = ffpp._executable
  31         if program is None:
  32             self.report_error('m3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
  33             return False
  34         ffpp.check_version()
  35         cmd = [program] + args
  36
  37         retval = subprocess.call(cmd)
  38         if retval == 0:
  39             fsize = os.path.getsize(encodeFilename(tmpfilename))
  40             self.to_screen('\r[%s] %s bytes' % (cmd[0], fsize))
  41             self.try_rename(tmpfilename, filename)
  42             self._hook_progress({
  43                 'downloaded_bytes': fsize,
  44                 'total_bytes': fsize,
  45                 'filename': filename,
  46                 'status': 'finished',
  47             })
  48             return True
  49         else:
  50             self.to_stderr('\n')
  51             self.report_error('%s exited with code %d' % (program, retval))
  52             return False
  53
  54
  55 class NativeHlsFD(FileDownloader):
  56     """ A more limited implementation that does not require ffmpeg """
  57
  58     def real_download(self, filename, info_dict):
  59         url = info_dict['url']
  60         self.report_destination(filename)
  61         tmpfilename = self.temp_name(filename)
  62
  63         self.to_screen(
  64             '[hlsnative] %s: Downloading m3u8 manifest' % info_dict['id'])
  65         data = self.ydl.urlopen(url).read()
  66         s = data.decode('utf-8', 'ignore')
  67         segment_urls = []
  68         for line in s.splitlines():
  69             line = line.strip()
  70             if line and not line.startswith('#'):
  71                 segment_url = (
  72                     line
  73                     if re.match(r'^https?://', line)
  74                     else compat_urlparse.urljoin(url, line))
  75                 segment_urls.append(segment_url)
  76
  77         is_test = self.params.get('test', False)
  78         remaining_bytes = self._TEST_FILE_SIZE if is_test else None
  79         byte_counter = 0
  80         with open(tmpfilename, 'wb') as outf:
  81             for i, segurl in enumerate(segment_urls):
  82                 self.to_screen(
  83                     '[hlsnative] %s: Downloading segment %d / %d' %
  84                     (info_dict['id'], i + 1, len(segment_urls)))
  85                 seg_req = compat_urllib_request.Request(segurl)
  86                 if remaining_bytes is not None:
  87                     seg_req.add_header('Range', 'bytes=0-%d' % (remaining_bytes - 1))
  88
  89                 segment = self.ydl.urlopen(seg_req).read()
  90                 if remaining_bytes is not None:
  91                     segment = segment[:remaining_bytes]
  92                     remaining_bytes -= len(segment)
  93                 outf.write(segment)
  94                 byte_counter += len(segment)
  95                 if remaining_bytes is not None and remaining_bytes <= 0:
  96                     break
  97
  98         self._hook_progress({
  99             'downloaded_bytes': byte_counter,
 100             'total_bytes': byte_counter,
 101             'filename': filename,
 102             'status': 'finished',
 103         })
 104         self.try_rename(tmpfilename, filename)
 105         return True