_ 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 ..utils import (
   9     compat_urlparse,
  10     compat_urllib_request,
  11     check_executable,
  12     encodeFilename,
  13 )
  14
  15
  16 class HlsFD(FileDownloader):
  17     def real_download(self, filename, info_dict):
  18         url = info_dict['url']
  19         self.report_destination(filename)
  20         tmpfilename = self.temp_name(filename)
  21
  22         args = [
  23             '-y', '-i', url, '-f', 'mp4', '-c', 'copy',
  24             '-bsf:a', 'aac_adtstoasc',
  25             encodeFilename(tmpfilename, for_subprocess=True)]
  26
  27         for program in ['avconv', 'ffmpeg']:
  28             if check_executable(program, ['-version']):
  29                 break
  30         else:
  31             self.report_error(u'm3u8 download detected but ffmpeg or avconv could not be found. Please install one.')
  32             return False
  33         cmd = [program] + args
  34
  35         retval = subprocess.call(cmd)
  36         if retval == 0:
  37             fsize = os.path.getsize(encodeFilename(tmpfilename))
  38             self.to_screen(u'\r[%s] %s bytes' % (cmd[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(u"\n")
  49             self.report_error(u'%s exited with code %d' % (program, retval))
  50             return False
  51
  52
  53 class NativeHlsFD(FileDownloader):
  54     """ A more limited implementation that does not require ffmpeg """
  55
  56     def real_download(self, filename, info_dict):
  57         url = info_dict['url']
  58         self.report_destination(filename)
  59         tmpfilename = self.temp_name(filename)
  60
  61         self.to_screen(
  62             '[hlsnative] %s: Downloading m3u8 manifest' % info_dict['id'])
  63         data = self.ydl.urlopen(url).read()
  64         s = data.decode('utf-8', 'ignore')
  65         segment_urls = []
  66         for line in s.splitlines():
  67             line = line.strip()
  68             if line and not line.startswith('#'):
  69                 segment_url = (
  70                     line
  71                     if re.match(r'^https?://', line)
  72                     else compat_urlparse.urljoin(url, line))
  73                 segment_urls.append(segment_url)
  74
  75         is_test = self.params.get('test', False)
  76         remaining_bytes = self._TEST_FILE_SIZE if is_test else None
  77         byte_counter = 0
  78         with open(tmpfilename, 'wb') as outf:
  79             for i, segurl in enumerate(segment_urls):
  80                 self.to_screen(
  81                     '[hlsnative] %s: Downloading segment %d / %d' %
  82                     (info_dict['id'], i + 1, len(segment_urls)))
  83                 seg_req = compat_urllib_request.Request(segurl)
  84                 if remaining_bytes is not None:
  85                     seg_req.add_header('Range', 'bytes=0-%d' % (remaining_bytes - 1))
  86
  87                 segment = self.ydl.urlopen(seg_req).read()
  88                 if remaining_bytes is not None:
  89                     segment = segment[:remaining_bytes]
  90                     remaining_bytes -= len(segment)
  91                 outf.write(segment)
  92                 byte_counter += len(segment)
  93                 if remaining_bytes is not None and remaining_bytes <= 0:
  94                     break
  95
  96         self._hook_progress({
  97             'downloaded_bytes': byte_counter,
  98             'total_bytes': byte_counter,
  99             'filename': filename,
 100             'status': 'finished',
 101         })
 102         self.try_rename(tmpfilename, filename)
 103         return True
 104