[FFmpeg-devel] [PATCH] better check for truemotion1 vectable IDs (issue2508)

[Daniel Kang]

ffmpeg checks if the vectable ID is < 4, but not > 0. ffmpeg selects the
vector table by using "header.vectable - 1" as the index, so for
header.vectable=0, ffmpeg will crash. The patch attached adds a check
for negative IDs.
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