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[extractor/common] imporove HLS video only format detection(closes #18923)

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This commit is contained in:
Remita Amine 2019-01-19 21:25:15 +01:00
parent e2dd132f05
commit 2bfc1d9d68
1 changed files with 8 additions and 2 deletions
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10
youtube_dl/extractor/common.py
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@ -1596,6 +1596,7 @@ class InfoExtractor(object):
# References:
# 1. https://tools.ietf.org/html/draft-pantos-http-live-streaming-21
# 2. https://github.com/rg3/youtube-dl/issues/12211
# 3. https://github.com/rg3/youtube-dl/issues/18923
# We should try extracting formats only from master playlists [1, 4.3.4],
# i.e. playlists that describe available qualities. On the other hand
@ -1667,11 +1668,16 @@ class InfoExtractor(object):
rendition = stream_group[0]
return rendition.get('NAME') or stream_group_id
# parse EXT-X-MEDIA tags before EXT-X-STREAM-INF inorder to have the
# chance to detect video only formats when EXT-X-STREAM-INF tags
# precede EXT-X-MEDIA tags in HLS manifest such as [3].
for line in m3u8_doc.splitlines():
if line.startswith('#EXT-X-MEDIA:'):
extract_media(line)
for line in m3u8_doc.splitlines():
if line.startswith('#EXT-X-STREAM-INF:'):
last_stream_inf = parse_m3u8_attributes(line)
elif line.startswith('#EXT-X-MEDIA:'):
extract_media(line)
elif line.startswith('#') or not line.strip():
continue
else: