Corruption while decoding file
Decoding the sample file produces corruption like so: https://i.imgur.com/JNTApKx.png
Libaom decodes this file correctly.
Sample file here: https://sharex.thevacuumof.space/2019/02/av1.mkv
Originally reported downstream to mpv: https://github.com/mpv-player/mpv/issues/6508
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