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Code Issues Releases Activity

avcodec/mpegvideo_enc: check intra dc precission

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-07-15 19:12:55 +02:00
parent 97f86cd976
commit 339d8fb353
1 changed files with 11 additions and 0 deletions
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11
libavcodec/mpegvideo_enc.c
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@ -342,6 +342,17 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
} else if (s->intra_dc_precision >= 8)
s->intra_dc_precision -= 8;
if (s->intra_dc_precision < 0) {
av_log(avctx, AV_LOG_ERROR,
"intra dc precision must be positive, note some applications use"
" 0 and some 8 as base meaning 8bit, the value must not be smaller than that\n");
return AVERROR(EINVAL);
}
if (s->intra_dc_precision > (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO ? 3 : 0)) {
av_log(avctx, AV_LOG_ERROR, "intra dc precision too large\n");
return AVERROR(EINVAL);
}
s->user_specified_pts = AV_NOPTS_VALUE;
if (s->gop_size <= 1) {