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mpeg4videoenc: ensure SAR is within the supported range

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-07-31 01:57:18 +02:00
parent b5da7d4c1a
commit 30c8573dc7
1 changed files with 2 additions and 0 deletions
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2
libavcodec/mpeg4videoenc.c
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@ -969,6 +969,8 @@ static void mpeg4_encode_vol_header(MpegEncContext * s, int vo_number, int vol_n
put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */
if (s->aspect_ratio_info == FF_ASPECT_EXTENDED){
av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den,
s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den, 255);
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num);
put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den);
}