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avcodec/mpeg12dec: do not trust AVCodecContext input dimensions 

Fixes initial wtv dimensions
Fixes Ticket4070
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-11-05 01:21:59 +01:00
parent f2ffaae9ac
commit 77f1199e8f
1 changed files with 4 additions and 0 deletions
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4
libavcodec/mpeg12dec.c
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@ -1120,6 +1120,10 @@ static av_cold int mpeg_decode_init(AVCodecContext *avctx)
MpegEncContext *s2 = &s->mpeg_enc_ctx;
ff_mpv_decode_defaults(s2);
if ( avctx->codec_tag != AV_RL32("VCR2")
&& avctx->codec_tag != AV_RL32("BW10"))
avctx->coded_width = avctx->coded_height = 0; // do not trust dimensions from input
ff_mpv_decode_init(s2, avctx);
s->mpeg_enc_ctx.avctx = avctx;