[FFmpeg-devel] [PATCH] Fix huge reported DTS on Ogg Theora files with bogus granulepos

Brion Vibber bvibber at wikimedia.org
Sat Jan 14 00:09:00 EET 2017

Patch fixes an issue with broken Ogg Theora videos containing bogus
negative granulepos on some packets: libavformat was reporting huge
positive dts timestamps for these packets, causing downstream problems for
ffmpeg2theora at Wikimedia Commons (near-infinite loop during transcoding).

Bug report: https://trac.ffmpeg.org/ticket/6080
Downstream issue: https://phabricator.wikimedia.org/T155247

Patch for libavformat attached. Returns AV_NOPTS_VALUE instead of bogus
value for the dts, which downstream ffmpeg2theora can already understand
and handle.


-- brion
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