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-rw-r--r--youtube_dl/extractor/common.py13
1 files changed, 11 insertions, 2 deletions
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index b9ad8461a..0bbb1103b 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -2001,6 +2001,12 @@ class InfoExtractor(object):
compat_etree_fromstring(ism.encode('utf-8')), urlh.geturl(), ism_id)
def _parse_ism_formats(self, ism_doc, ism_url, ism_id=None):
+ """
+ Parse formats from ISM manifest.
+ References:
+ 1. [MS-SSTR]: Smooth Streaming Protocol,
+ https://msdn.microsoft.com/en-us/library/ff469518.aspx
+ """
if ism_doc.get('IsLive') == 'TRUE' or ism_doc.find('Protection') is not None:
return []
@@ -2022,8 +2028,11 @@ class InfoExtractor(object):
self.report_warning('%s is not a supported codec' % fourcc)
continue
tbr = int(track.attrib['Bitrate']) // 1000
- width = int_or_none(track.get('MaxWidth'))
- height = int_or_none(track.get('MaxHeight'))
+ # [1] does not mention Width and Height attributes. However,
+ # they're often present while MaxWidth and MaxHeight are
+ # missing, so should be used as fallbacks
+ width = int_or_none(track.get('MaxWidth') or track.get('Width'))
+ height = int_or_none(track.get('MaxHeight') or track.get('Height'))
sampling_rate = int_or_none(track.get('SamplingRate'))
track_url_pattern = re.sub(r'{[Bb]itrate}', track.attrib['Bitrate'], url_pattern)