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authorChris Cunningham <chcunningham@chromium.org>2017-02-03 14:42:44 -0800
committerwm4 <nfxjfg@googlemail.com>2017-02-06 09:33:28 +0100
commitac25840ee32888f0c13118edeb9404a123cd3a79 (patch)
tree5f6adff8f7cf2a683091cfd50badfd2f016c549a /.gitattributes
parentdfc6e30cd4b9d1817b78579c11fc6881e40b9733 (diff)
downloadffmpeg-ac25840ee32888f0c13118edeb9404a123cd3a79.tar.gz
lavf/matroskadec: fix is_keyframe for early Blocks
Blocks are marked as key frames whenever the "reference" field is zero. This breaks for non-keyframe Blocks with a reference timestamp of zero. The likelihood of reference timestamp being zero is increased by a longstanding bug in muxing that encodes reference timestamp as the absolute time of the referenced frame (rather than relative to the current Block timestamp, as described in MKV spec). Now using INT64_MIN to denote "no reference". Reported to chromium at http://crbug.com/497889 (contains sample)
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