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ffmpeg: fix negative array index

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Fixes CID733808
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-22 13:58:19 +02:00
parent 6182e0a6f6
commit c3778df2d4
1 changed files with 2 additions and 1 deletions
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ffmpeg_filter.c
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@ -37,7 +37,8 @@ enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFo
{
if (codec && codec->pix_fmts) {
const enum AVPixelFormat *p = codec->pix_fmts;
int has_alpha= av_pix_fmt_desc_get(target)->nb_components % 2 == 0;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
enum AVPixelFormat best= AV_PIX_FMT_NONE;
if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
if (st->codec->codec_id == AV_CODEC_ID_MJPEG) {