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-rw-r--r--youtube_dl/extractor/common.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 35d427eec..5e7e7a3f7 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -2054,7 +2054,7 @@ class InfoExtractor(object):
stream_timescale = int_or_none(stream.get('TimeScale')) or timescale
stream_name = stream.get('Name')
for track in stream.findall('QualityLevel'):
- fourcc = track.get('FourCC')
+ fourcc = track.get('FourCC', 'AACL' if track.get('AudioTag') == '255' else None)
# TODO: add support for WVC1 and WMAP
if fourcc not in ('H264', 'AVC1', 'AACL'):
self.report_warning('%s is not a supported codec' % fourcc)