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[youtube] Handle missing DASH manifest (Fixes #4421, fixes #4420)

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This commit is contained in:
Philipp Hagemeister 2014-12-10 13:21:24 +01:00
parent f20b52778b
commit 774e208f94
1 changed files with 68 additions and 45 deletions
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113
youtube_dl/extractor/youtube.py
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@ -417,6 +417,22 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
'upload_date': '20140605',
},
},
# video_info is None (https://github.com/rg3/youtube-dl/issues/4421)
{
'url': '__2ABJjxzNo',
'info_dict': {
'id': '__2ABJjxzNo',
'ext': 'mp4',
'upload_date': '20100430',
'uploader_id': 'deadmau5',
'description': 'md5:12c56784b8032162bb936a5f76d55360',
'uploader': 'deadmau5',
'title': 'Deadmau5 - Some Chords (HD)',
},
'expected_warnings': [
'DASH manifest missing',
]
}
]
def __init__(self, *args, **kwargs):
@ -666,6 +682,45 @@ def _extract_annotations(self, video_id):
url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
def _parse_dash_manifest(self, video_id, dash_manifest_url):
def decrypt_sig(mobj):
s = mobj.group(1)
dec_s = self._decrypt_signature(s, video_id, player_url, age_gate)
return '/signature/%s' % dec_s
dash_manifest_url = re.sub(r'/s/([\w\.]+)', decrypt_sig, dash_manifest_url)
dash_doc = self._download_xml(
dash_manifest_url, video_id,
note='Downloading DASH manifest',
errnote='Could not download DASH manifest')
formats = []
for r in dash_doc.findall('.//{urn:mpeg:DASH:schema:MPD:2011}Representation'):
url_el = r.find('{urn:mpeg:DASH:schema:MPD:2011}BaseURL')
if url_el is None:
continue
format_id = r.attrib['id']
video_url = url_el.text
filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength'))
f = {
'format_id': format_id,
'url': video_url,
'width': int_or_none(r.attrib.get('width')),
'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
'asr': int_or_none(r.attrib.get('audioSamplingRate')),
'filesize': filesize,
'fps': int_or_none(r.attrib.get('frameRate')),
}
try:
existing_format = next(
fo for fo in formats
if fo['format_id'] == format_id)
except StopIteration:
f.update(self._formats.get(format_id, {}))
formats.append(f)
else:
existing_format.update(f)
return formats
def _real_extract(self, url):
proto = (
'http' if self._downloader.params.get('prefer_insecure', False)
@ -943,51 +998,19 @@ def _map_to_format_list(urlmap):
# Look for the DASH manifest
if self._downloader.params.get('youtube_include_dash_manifest', True):
try:
# The DASH manifest used needs to be the one from the original video_webpage.
# The one found in get_video_info seems to be using different signatures.
# However, in the case of an age restriction there won't be any embedded dashmpd in the video_webpage.
# Luckily, it seems, this case uses some kind of default signature (len == 86), so the
# combination of get_video_info and the _static_decrypt_signature() decryption fallback will work here.
dash_manifest_url = video_info.get('dashmpd')[0]
def decrypt_sig(mobj):
s = mobj.group(1)
dec_s = self._decrypt_signature(s, video_id, player_url, age_gate)
return '/signature/%s' % dec_s
dash_manifest_url = re.sub(r'/s/([\w\.]+)', decrypt_sig, dash_manifest_url)
dash_doc = self._download_xml(
dash_manifest_url, video_id,
note='Downloading DASH manifest',
errnote='Could not download DASH manifest')
for r in dash_doc.findall('.//{urn:mpeg:DASH:schema:MPD:2011}Representation'):
url_el = r.find('{urn:mpeg:DASH:schema:MPD:2011}BaseURL')
if url_el is None:
continue
format_id = r.attrib['id']
video_url = url_el.text
filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength'))
f = {
'format_id': format_id,
'url': video_url,
'width': int_or_none(r.attrib.get('width')),
'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
'asr': int_or_none(r.attrib.get('audioSamplingRate')),
'filesize': filesize,
'fps': int_or_none(r.attrib.get('frameRate')),
}
try:
existing_format = next(
fo for fo in formats
if fo['format_id'] == format_id)
except StopIteration:
f.update(self._formats.get(format_id, {}))
formats.append(f)
else:
existing_format.update(f)
except (ExtractorError, KeyError) as e:
self.report_warning('Skipping DASH manifest: %r' % e, video_id)
dash_mpd = video_info.get('dashmpd')
if not dash_mpd:
self.report_warning('%s: DASH manifest missing' % video_id)
else:
dash_manifest_url = dash_mpd[0]
try:
dash_formats = self._parse_dash_manifest(
video_id, dash_manifest_url)
except (ExtractorError, KeyError) as e:
self.report_warning(
'Skipping DASH manifest: %r' % e, video_id)
else:
formats.extend(dash_formats)
self._sort_formats(formats)