Mattias Wadman e447a4d112 libavformat/flacenc: reject too big picture blocks ...

A too big picture will case the muxer to write a truncated block size (uint24)
causing the output file to be corrupt.

How to reproduce:

Write a file with truncated block size:
ffmpeg -y -f lavfi -i sine -f lavfi -i color=red:size=2400x2400 -map 0:a:0 -map 1:v:0 -c:v:0 bmp -disposition:1 attached_pic -t 1 test.flac

Try to decode:
ffmpeg -i test.flac test.wav

Signed-off-by: Mattias Wadman <mattias.wadman@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2019-11-01 14:43:16 +01:00

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