#764: Increasing robustness of runlength decoding for scantable access in
mpeg12.c
-------------------------------------+-------------------------------------
Reporter: erik | Owner:
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: unspecified | Resolution:
Keywords: mpeg | Blocked By:
robustness | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by erik):
The ac-tex check is missing in
mpeg1_fast_decode_block_inter
mpeg2_fast_decode_block_non_intra
When I put
{{{
if (i < 0 || i >= 64 ) av_log(s->avctx, AV_LOG_ERROR, "scantable error,
i = %d\n", i);
}}}
just before the scan table access I get many of these error messages
example:
[mpeg2video @ 003d69c0] scantable error, i = 330
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/764#comment:12>
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