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[youtube] Extract formats from multiple DASH manifests (Closes #6093) 

DASH manifest pointed by dashmpd from the video webpage and one pointed by get_video_info may
be different (namely different itag set) - some itags are missing from DASH manifest pointed by
webpage's dashmpd, some - from DASH manifest pointed by get_video_info's dashmpd).
The general idea is to take a union of itags of both DASH manifests (for example video with such
'manifest behavior' see https://github.com/rg3/youtube-dl/issues/6093).
master
Sergey M․ 9 years ago
parent
2988835af5
commit
d8d24a922a
1 changed files with 46 additions and 31 deletions
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  1. 77
      youtube_dl/extractor/youtube.py

77
youtube_dl/extractor/youtube.py
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@ -853,6 +853,13 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
else:
player_url = None
dash_mpds = []
def add_dash_mpd(video_info):
dash_mpd = video_info.get('dashmpd')
if dash_mpd and dash_mpd[0] not in dash_mpds:
dash_mpds.append(dash_mpd[0])
# Get video info
embed_webpage = None
if re.search(r'player-age-gate-content">', video_webpage) is not None:
@ -873,34 +880,40 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
note='Refetching age-gated info webpage',
errnote='unable to download video info webpage')
video_info = compat_parse_qs(video_info_webpage)
add_dash_mpd(video_info)
else:
age_gate = False
try:
# Try looking directly into the video webpage
mobj = re.search(r';ytplayer\.config\s*=\s*({.*?});', video_webpage)
if not mobj:
raise ValueError('Could not find ytplayer.config') # caught below
# Try looking directly into the video webpage
mobj = re.search(r';ytplayer\.config\s*=\s*({.*?});', video_webpage)
if mobj:
json_code = uppercase_escape(mobj.group(1))
ytplayer_config = json.loads(json_code)
args = ytplayer_config['args']
# Convert to the same format returned by compat_parse_qs
video_info = dict((k, [v]) for k, v in args.items())
if not args.get('url_encoded_fmt_stream_map'):
raise ValueError('No stream_map present') # caught below
except ValueError:
# We fallback to the get_video_info pages (used by the embed page)
self.report_video_info_webpage_download(video_id)
for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
video_info_url = (
'%s://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
% (proto, video_id, el_type))
video_info_webpage = self._download_webpage(
video_info_url,
video_id, note=False,
errnote='unable to download video info webpage')
video_info = compat_parse_qs(video_info_webpage)
if 'token' in video_info:
break
if args.get('url_encoded_fmt_stream_map'):
# Convert to the same format returned by compat_parse_qs
video_info = dict((k, [v]) for k, v in args.items())
add_dash_mpd(video_info)
# We also try looking in get_video_info since it may contain different dashmpd
# URL that points to a DASH manifest with possibly different itag set (some itags
# are missing from DASH manifest pointed by webpage's dashmpd, some - from DASH
# manifest pointed by get_video_info's dashmpd).
# The general idea is to take a union of itags of both DASH manifests (for example
# video with such 'manifest behavior' see https://github.com/rg3/youtube-dl/issues/6093)
self.report_video_info_webpage_download(video_id)
for el_type in ['&el=info', '&el=embedded', '&el=detailpage', '&el=vevo', '']:
video_info_url = (
'%s://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
% (proto, video_id, el_type))
video_info_webpage = self._download_webpage(
video_info_url,
video_id, note=False,
errnote='unable to download video info webpage')
get_video_info = compat_parse_qs(video_info_webpage)
add_dash_mpd(get_video_info)
if not video_info:
video_info = get_video_info
if 'token' in get_video_info:
break
if 'token' not in video_info:
if 'reason' in video_info:
raise ExtractorError(
@ -1118,24 +1131,26 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
# Look for the DASH manifest
if self._downloader.params.get('youtube_include_dash_manifest', True):
dash_mpd = video_info.get('dashmpd')
if dash_mpd:
dash_manifest_url = dash_mpd[0]
for dash_manifest_url in dash_mpds:
dash_formats = {}
try:
dash_formats = self._parse_dash_manifest(
video_id, dash_manifest_url, player_url, age_gate)
for df in self._parse_dash_manifest(
video_id, dash_manifest_url, player_url, age_gate):
# Do not overwrite DASH format found in some previous DASH manifest
if df['format_id'] not in dash_formats:
dash_formats[df['format_id']] = df
except (ExtractorError, KeyError) as e:
self.report_warning(
'Skipping DASH manifest: %r' % e, video_id)
else:
if dash_formats:
# Remove the formats we found through non-DASH, they
# contain less info and it can be wrong, because we use
# fixed values (for example the resolution). See
# https://github.com/rg3/youtube-dl/issues/5774 for an
# example.
dash_keys = set(df['format_id'] for df in dash_formats)
dash_keys = set(df['format_id'] for df in dash_formats.values())
formats = [f for f in formats if f['format_id'] not in dash_keys]
formats.extend(dash_formats)
formats.extend(dash_formats.values())
# Check for malformed aspect ratio
stretched_m = re.search(

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