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Add option --extractor-retries to retry on known extractor errors

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* Currently only used by youtube

Fixes https://github.com/ytdl-org/youtube-dl/issues/28194
Possibly also fixes: https://github.com/ytdl-org/youtube-dl/issues/28289 (can not confirm since the issue isn't reliably reproducible)
This commit is contained in:
pukkandan 2021-03-01 05:18:37 +05:30
parent f0884c8b3f
commit 62bff2c170
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4 changed files with 48 additions and 30 deletions
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1
yt_dlp/YoutubeDL.py
View File

@ -381,6 +381,7 @@ class YoutubeDL(object):
Use 'default' as the name for arguments to passed to all PP
The following options are used by the extractors:
extractor_retries: Number of times to retry for known errors
dynamic_mpd: Whether to process dynamic DASH manifests (default: True)
hls_split_discontinuity: Split HLS playlists to different formats at
discontinuities such as ad breaks (default: False)

9
yt_dlp/__init__.py
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@ -181,19 +181,21 @@ def _real_main(argv=None):
# --yes-overwrites implies --no-continue
opts.continue_dl = False
def parse_retries(retries):
def parse_retries(retries, name=''):
if retries in ('inf', 'infinite'):
parsed_retries = float('inf')
else:
try:
parsed_retries = int(retries)
except (TypeError, ValueError):
parser.error('invalid retry count specified')
parser.error('invalid %sretry count specified' % name)
return parsed_retries
if opts.retries is not None:
opts.retries = parse_retries(opts.retries)
if opts.fragment_retries is not None:
opts.fragment_retries = parse_retries(opts.fragment_retries)
opts.fragment_retries = parse_retries(opts.fragment_retries, 'fragment ')
if opts.extractor_retries is not None:
opts.extractor_retries = parse_retries(opts.extractor_retries, 'extractor ')
if opts.buffersize is not None:
numeric_buffersize = FileDownloader.parse_bytes(opts.buffersize)
if numeric_buffersize is None:
@ -458,6 +460,7 @@ def _real_main(argv=None):
'overwrites': opts.overwrites,
'retries': opts.retries,
'fragment_retries': opts.fragment_retries,
'extractor_retries': opts.extractor_retries,
'skip_unavailable_fragments': opts.skip_unavailable_fragments,
'keep_fragments': opts.keep_fragments,
'buffersize': opts.buffersize,

46
yt_dlp/extractor/youtube.py
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@ -2762,28 +2762,36 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
for page_num in itertools.count(1):
if not continuation:
break
count = 0
retries = 3
while count <= retries:
retries = self._downloader.params.get('extractor_retries', 3)
count = -1
last_error = None
while count < retries:
count += 1
if last_error:
self.report_warning('%s. Retrying ...' % last_error)
try:
# Downloading page may result in intermittent 5xx HTTP error
# that is usually worked around with a retry
browse = self._download_json(
'https://www.youtube.com/browse_ajax', None,
'Downloading page %d%s'
% (page_num, ' (retry #%d)' % count if count else ''),
headers=headers, query=continuation)
break
except ExtractorError as e:
if isinstance(e.cause, compat_HTTPError) and e.cause.code in (500, 503):
count += 1
if count <= retries:
if isinstance(e.cause, compat_HTTPError) and e.cause.code in (500, 503, 404):
# Downloading page may result in intermittent 5xx HTTP error
# Sometimes a 404 is also recieved. See: https://github.com/ytdl-org/youtube-dl/issues/28289
last_error = 'HTTP Error %s' % e.cause.code
if count < retries:
continue
raise
if not browse:
break
else:
response = try_get(browse, lambda x: x[1]['response'], dict)
if not response:
# Youtube sometimes sends incomplete data
# See: https://github.com/ytdl-org/youtube-dl/issues/28194
if response.get('continuationContents') or response.get('onResponseReceivedActions'):
break
last_error = 'Incomplete data recieved'
if not browse or not response:
break
known_continuation_renderers = {
@ -3004,11 +3012,16 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
return self.url_result(video_id, ie=YoutubeIE.ie_key(), video_id=video_id)
self.to_screen('Downloading playlist %s - add --no-playlist to just download video %s' % (playlist_id, video_id))
count = 0
retries = 3
retries = self._downloader.params.get('extractor_retries', 3)
count = -1
while count < retries:
count += 1
# Sometimes youtube returns a webpage with incomplete ytInitialData
webpage = self._download_webpage(url, item_id)
# See: https://github.com/yt-dlp/yt-dlp/issues/116
if count:
self.report_warning('Incomplete yt initial data recieved. Retrying ...')
webpage = self._download_webpage(url, item_id,
'Downloading webpage%s' % ' (retry #%d)' % count if count else '')
identity_token = self._extract_identity_token(webpage, item_id)
data = self._extract_yt_initial_data(item_id, webpage)
err_msg = None
@ -3023,9 +3036,6 @@ class YoutubeTabIE(YoutubeBaseInfoExtractor):
raise ExtractorError('YouTube said: %s' % err_msg, expected=True)
if data.get('contents') or data.get('currentVideoEndpoint'):
break
count += 1
self.to_screen(
'Incomplete yt initial data recieved. Retrying (attempt %d of %d)...' % (count, retries))
tabs = try_get(
data, lambda x: x['contents']['twoColumnBrowseResultsRenderer']['tabs'], list)

4
yt_dlp/options.py
View File

@ -1218,6 +1218,10 @@ def parseOpts(overrideArguments=None):
help=optparse.SUPPRESS_HELP)
extractor = optparse.OptionGroup(parser, 'Extractor Options')
extractor.add_option(
'--extractor-retries',
dest='extractor_retries', metavar='RETRIES', default=10,
help='Number of retries for known extractor errors (default is %default), or "infinite"')
extractor.add_option(
'--allow-dynamic-mpd', '--no-ignore-dynamic-mpd',
action='store_true', dest='dynamic_mpd', default=True,