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https://github.com/l1ving/youtube-dl
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[YoutubeDL] Fix format selection with filters (Closes #10083)
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Sergey M․
parent
23495d6a39
commit
317f7ab634
@ -335,6 +335,40 @@ class TestFormatSelection(unittest.TestCase):
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downloaded = ydl.downloaded_info_dicts[0]
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self.assertEqual(downloaded['format_id'], f1['format_id'])
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def test_audio_only_extractor_format_selection(self):
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# For extractors with incomplete formats (all formats are audio-only or
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# video-only) best and worst should fallback to corresponding best/worst
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# video-only or audio-only formats (as per
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# https://github.com/rg3/youtube-dl/pull/5556)
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formats = [
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{'format_id': 'low', 'ext': 'mp3', 'preference': 1, 'vcodec': 'none', 'url': TEST_URL},
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{'format_id': 'high', 'ext': 'mp3', 'preference': 2, 'vcodec': 'none', 'url': TEST_URL},
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]
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info_dict = _make_result(formats)
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ydl = YDL({'format': 'best'})
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ydl.process_ie_result(info_dict.copy())
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downloaded = ydl.downloaded_info_dicts[0]
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self.assertEqual(downloaded['format_id'], 'high')
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ydl = YDL({'format': 'worst'})
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ydl.process_ie_result(info_dict.copy())
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downloaded = ydl.downloaded_info_dicts[0]
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self.assertEqual(downloaded['format_id'], 'low')
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def test_format_not_available(self):
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formats = [
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{'format_id': 'regular', 'ext': 'mp4', 'height': 360, 'url': TEST_URL},
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{'format_id': 'video', 'ext': 'mp4', 'height': 720, 'acodec': 'none', 'url': TEST_URL},
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]
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info_dict = _make_result(formats)
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# This must fail since complete video-audio format does not match filter
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# and extractor does not provide incomplete only formats (i.e. only
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# video-only or audio-only).
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ydl = YDL({'format': 'best[height>360]'})
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self.assertRaises(ExtractorError, ydl.process_ie_result, info_dict.copy())
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def test_invalid_format_specs(self):
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def assert_syntax_error(format_spec):
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ydl = YDL({'format': format_spec})
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@ -5,6 +5,7 @@ from __future__ import absolute_import, unicode_literals
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import collections
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import contextlib
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import copy
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import datetime
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import errno
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import fileinput
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@ -1051,9 +1052,9 @@ class YoutubeDL(object):
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if isinstance(selector, list):
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fs = [_build_selector_function(s) for s in selector]
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def selector_function(formats):
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def selector_function(ctx):
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for f in fs:
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for format in f(formats):
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for format in f(ctx):
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yield format
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return selector_function
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elif selector.type == GROUP:
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@ -1061,17 +1062,17 @@ class YoutubeDL(object):
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elif selector.type == PICKFIRST:
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fs = [_build_selector_function(s) for s in selector.selector]
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def selector_function(formats):
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def selector_function(ctx):
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for f in fs:
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picked_formats = list(f(formats))
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picked_formats = list(f(ctx))
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if picked_formats:
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return picked_formats
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return []
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elif selector.type == SINGLE:
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format_spec = selector.selector
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def selector_function(formats):
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formats = list(formats)
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def selector_function(ctx):
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formats = list(ctx['formats'])
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if not formats:
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return
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if format_spec == 'all':
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@ -1084,9 +1085,10 @@ class YoutubeDL(object):
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if f.get('vcodec') != 'none' and f.get('acodec') != 'none']
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if audiovideo_formats:
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yield audiovideo_formats[format_idx]
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# for audio only (soundcloud) or video only (imgur) urls, select the best/worst audio format
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elif (all(f.get('acodec') != 'none' for f in formats) or
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all(f.get('vcodec') != 'none' for f in formats)):
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# for extractors with incomplete formats (audio only (soundcloud)
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# or video only (imgur)) we will fallback to best/worst
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# {video,audio}-only format
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elif ctx['incomplete_formats']:
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yield formats[format_idx]
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elif format_spec == 'bestaudio':
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audio_formats = [
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@ -1160,17 +1162,18 @@ class YoutubeDL(object):
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}
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video_selector, audio_selector = map(_build_selector_function, selector.selector)
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def selector_function(formats):
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formats = list(formats)
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for pair in itertools.product(video_selector(formats), audio_selector(formats)):
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def selector_function(ctx):
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for pair in itertools.product(
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video_selector(copy.deepcopy(ctx)), audio_selector(copy.deepcopy(ctx))):
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yield _merge(pair)
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filters = [self._build_format_filter(f) for f in selector.filters]
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def final_selector(formats):
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def final_selector(ctx):
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ctx_copy = copy.deepcopy(ctx)
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for _filter in filters:
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formats = list(filter(_filter, formats))
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return selector_function(formats)
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ctx_copy['formats'] = list(filter(_filter, ctx_copy['formats']))
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return selector_function(ctx_copy)
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return final_selector
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stream = io.BytesIO(format_spec.encode('utf-8'))
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@ -1377,7 +1380,35 @@ class YoutubeDL(object):
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req_format_list.append('best')
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req_format = '/'.join(req_format_list)
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format_selector = self.build_format_selector(req_format)
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formats_to_download = list(format_selector(formats))
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# While in format selection we may need to have an access to the original
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# format set in order to calculate some metrics or do some processing.
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# For now we need to be able to guess whether original formats provided
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# by extractor are incomplete or not (i.e. whether extractor provides only
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# video-only or audio-only formats) for proper formats selection for
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# extractors with such incomplete formats (see
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# https://github.com/rg3/youtube-dl/pull/5556).
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# Since formats may be filtered during format selection and may not match
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# the original formats the results may be incorrect. Thus original formats
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# or pre-calculated metrics should be passed to format selection routines
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# as well.
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# We will pass a context object containing all necessary additional data
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# instead of just formats.
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# This fixes incorrect format selection issue (see
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# https://github.com/rg3/youtube-dl/issues/10083).
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incomplete_formats = all(
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# All formats are video-only or
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f.get('vcodec') != 'none' and f.get('acodec') == 'none' or
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# all formats are audio-only
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f.get('vcodec') == 'none' and f.get('acodec') != 'none'
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for f in formats)
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ctx = {
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'formats': formats,
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'incomplete_formats': incomplete_formats,
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}
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formats_to_download = list(format_selector(ctx))
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if not formats_to_download:
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raise ExtractorError('requested format not available',
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expected=True)
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