entry_protocol='m3u8', preference=None,
m3u8_id=None, note=None, errnote=None,
fatal=True, live=False):
-
res = self._download_webpage_handle(
m3u8_url, video_id,
note=note or 'Downloading m3u8 information',
errnote=errnote or 'Failed to download m3u8 information',
fatal=fatal)
+
if res is False:
return []
+
m3u8_doc, urlh = res
m3u8_url = urlh.geturl()
+ return self._parse_m3u8_formats(
+ m3u8_doc, m3u8_url, ext=ext, entry_protocol=entry_protocol,
+ preference=preference, m3u8_id=m3u8_id, live=live)
+
+ def _parse_m3u8_formats(self, m3u8_doc, m3u8_url, ext=None,
+ entry_protocol='m3u8', preference=None,
+ m3u8_id=None, live=False):
if '#EXT-X-FAXS-CM:' in m3u8_doc: # Adobe Flash Access
return []
if re.match(r'^https?://', u)
else compat_urlparse.urljoin(m3u8_url, u))
- # We should try extracting formats only from master playlists [1], i.e.
- # playlists that describe available qualities. On the other hand media
- # playlists [2] should be returned as is since they contain just the media
- # without qualities renditions.
+ # References:
+ # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-21
+ # 2. https://github.com/rg3/youtube-dl/issues/12211
+
+ # We should try extracting formats only from master playlists [1, 4.3.4],
+ # i.e. playlists that describe available qualities. On the other hand
+ # media playlists [1, 4.3.3] should be returned as is since they contain
+ # just the media without qualities renditions.
# Fortunately, master playlist can be easily distinguished from media
- # playlist based on particular tags availability. As of [1, 2] master
- # playlist tags MUST NOT appear in a media playist and vice versa.
- # As of [3] #EXT-X-TARGETDURATION tag is REQUIRED for every media playlist
- # and MUST NOT appear in master playlist thus we can clearly detect media
- # playlist with this criterion.
- # 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.4
- # 2. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3
- # 3. https://tools.ietf.org/html/draft-pantos-http-live-streaming-17#section-4.3.3.1
+ # playlist based on particular tags availability. As of [1, 4.3.3, 4.3.4]
+ # master playlist tags MUST NOT appear in a media playist and vice versa.
+ # As of [1, 4.3.3.1] #EXT-X-TARGETDURATION tag is REQUIRED for every
+ # media playlist and MUST NOT appear in master playlist thus we can
+ # clearly detect media playlist with this criterion.
+
if '#EXT-X-TARGETDURATION' in m3u8_doc: # media playlist, return as is
return [{
'url': m3u8_url,
'protocol': entry_protocol,
'preference': preference,
}]
- audio_in_video_stream = {}
- last_info = {}
- last_media = {}
+
+ groups = {}
+ last_stream_inf = {}
+
+ def extract_media(x_media_line):
+ media = parse_m3u8_attributes(x_media_line)
+ # As per [1, 4.3.4.1] TYPE, GROUP-ID and NAME are REQUIRED
+ media_type, group_id, name = media.get('TYPE'), media.get('GROUP-ID'), media.get('NAME')
+ if not (media_type and group_id and name):
+ return
+ groups.setdefault(group_id, []).append(media)
+ if media_type not in ('VIDEO', 'AUDIO'):
+ return
+ media_url = media.get('URI')
+ if media_url:
+ format_id = []
+ for v in (group_id, name):
+ if v:
+ format_id.append(v)
+ f = {
+ 'format_id': '-'.join(format_id),
+ 'url': format_url(media_url),
+ 'language': media.get('LANGUAGE'),
+ 'ext': ext,
+ 'protocol': entry_protocol,
+ 'preference': preference,
+ }
+ if media_type == 'AUDIO':
+ f['vcodec'] = 'none'
+ formats.append(f)
+
+ def build_stream_name():
+ # Despite specification does not mention NAME attribute for
+ # EXT-X-STREAM-INF it still sometimes may be present
+ stream_name = last_stream_inf.get('NAME')
+ if stream_name:
+ return stream_name
+ # If there is no NAME in EXT-X-STREAM-INF it will be obtained
+ # from corresponding rendition group
+ stream_group_id = last_stream_inf.get('VIDEO')
+ if not stream_group_id:
+ return
+ stream_group = groups.get(stream_group_id)
+ if not stream_group:
+ return stream_group_id
+ rendition = stream_group[0]
+ return rendition.get('NAME') or stream_group_id
+
for line in m3u8_doc.splitlines():
if line.startswith('#EXT-X-STREAM-INF:'):
- last_info = parse_m3u8_attributes(line)
+ last_stream_inf = parse_m3u8_attributes(line)
elif line.startswith('#EXT-X-MEDIA:'):
- media = parse_m3u8_attributes(line)
- media_type = media.get('TYPE')
- if media_type in ('VIDEO', 'AUDIO'):
- group_id = media.get('GROUP-ID')
- media_url = media.get('URI')
- if media_url:
- format_id = []
- for v in (group_id, media.get('NAME')):
- if v:
- format_id.append(v)
- f = {
- 'format_id': '-'.join(format_id),
- 'url': format_url(media_url),
- 'language': media.get('LANGUAGE'),
- 'ext': ext,
- 'protocol': entry_protocol,
- 'preference': preference,
- }
- if media_type == 'AUDIO':
- f['vcodec'] = 'none'
- if group_id and not audio_in_video_stream.get(group_id):
- audio_in_video_stream[group_id] = False
- formats.append(f)
- else:
- # When there is no URI in EXT-X-MEDIA let this tag's
- # data be used by regular URI lines below
- last_media = media
- if media_type == 'AUDIO' and group_id:
- audio_in_video_stream[group_id] = True
+ extract_media(line)
elif line.startswith('#') or not line.strip():
continue
else:
- tbr = int_or_none(last_info.get('AVERAGE-BANDWIDTH') or last_info.get('BANDWIDTH'), scale=1000)
+ tbr = int_or_none(last_stream_inf.get('AVERAGE-BANDWIDTH') or last_stream_inf.get('BANDWIDTH'), scale=1000)
format_id = []
if m3u8_id:
format_id.append(m3u8_id)
- # Despite specification does not mention NAME attribute for
- # EXT-X-STREAM-INF it still sometimes may be present
- stream_name = last_info.get('NAME') or last_media.get('NAME')
+ stream_name = build_stream_name()
# Bandwidth of live streams may differ over time thus making
# format_id unpredictable. So it's better to keep provided
# format_id intact.
'manifest_url': manifest_url,
'tbr': tbr,
'ext': ext,
- 'fps': float_or_none(last_info.get('FRAME-RATE')),
+ 'fps': float_or_none(last_stream_inf.get('FRAME-RATE')),
'protocol': entry_protocol,
'preference': preference,
}
- resolution = last_info.get('RESOLUTION')
+ resolution = last_stream_inf.get('RESOLUTION')
if resolution:
mobj = re.search(r'(?P<width>\d+)[xX](?P<height>\d+)', resolution)
if mobj:
'vbr': vbr,
'abr': abr,
})
- f.update(parse_codecs(last_info.get('CODECS')))
- if audio_in_video_stream.get(last_info.get('AUDIO')) is False and f['vcodec'] != 'none':
- # TODO: update acodec for audio only formats with the same GROUP-ID
- f['acodec'] = 'none'
+ codecs = parse_codecs(last_stream_inf.get('CODECS'))
+ f.update(codecs)
+ audio_group_id = last_stream_inf.get('AUDIO')
+ # As per [1, 4.3.4.1.1] any EXT-X-STREAM-INF tag which
+ # references a rendition group MUST have a CODECS attribute.
+ # However, this is not always respected, for example, [2]
+ # contains EXT-X-STREAM-INF tag which references AUDIO
+ # rendition group but does not have CODECS and despite
+ # referencing audio group an audio group, it represents
+ # a complete (with audio and video) format. So, for such cases
+ # we will ignore references to rendition groups and treat them
+ # as complete formats.
+ if audio_group_id and codecs and f.get('vcodec') != 'none':
+ audio_group = groups.get(audio_group_id)
+ if audio_group and audio_group[0].get('URI'):
+ # TODO: update acodec for audio only formats with
+ # the same GROUP-ID
+ f['acodec'] = 'none'
formats.append(f)
- last_info = {}
- last_media = {}
+ last_stream_inf = {}
return formats
@staticmethod
projects / youtube-dl / blobdiff