From: Michael Niedermayer <[email protected]> Fixes issue1613, 621, 562 simultaneously
Signed-off-by: Michael Niedermayer <[email protected]> Signed-off-by: Anton Khirnov <[email protected]> --- libavcodec/mpeg12.c | 20 ++++++++++++++++++-- 1 files changed, 18 insertions(+), 2 deletions(-) diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c index 88ed533..7ae02c3 100644 --- a/libavcodec/mpeg12.c +++ b/libavcodec/mpeg12.c @@ -1271,9 +1271,19 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){ avctx->ticks_per_frame=2; //MPEG-2 aspect if(s->aspect_ratio_info > 1){ - //we ignore the spec here as reality does not match the spec, see for example + AVRational dar= + av_mul_q( + av_div_q( + ff_mpeg2_aspect[s->aspect_ratio_info], + (AVRational){s1->pan_scan.width, s1->pan_scan.height} + ), + (AVRational){s->width, s->height}); + + //we ignore the spec here and guess a bit as reality does not match the spec, see for example // res_change_ffmpeg_aspect.ts and sequence-display-aspect.mpg - if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) || 1){ + //issue1613, 621, 562 + if( (s1->pan_scan.width == 0 )||(s1->pan_scan.height == 0) + || (av_cmp_q(dar,(AVRational){4,3})&&av_cmp_q(dar,(AVRational){16,9}))){ s->avctx->sample_aspect_ratio= av_div_q( ff_mpeg2_aspect[s->aspect_ratio_info], @@ -1285,6 +1295,12 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){ ff_mpeg2_aspect[s->aspect_ratio_info], (AVRational){s1->pan_scan.width, s1->pan_scan.height} ); +//issue1613 4/3 16/9 -> 16/9 +//res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3 +//widescreen-issue562.mpg 4/3 16/9 -> 16/9 +// s->avctx->sample_aspect_ratio= av_mul_q(s->avctx->sample_aspect_ratio, (AVRational){s->width, s->height}); +//av_log(NULL, AV_LOG_ERROR, "A %d/%d\n",ff_mpeg2_aspect[s->aspect_ratio_info].num, ff_mpeg2_aspect[s->aspect_ratio_info].den); +//av_log(NULL, AV_LOG_ERROR, "B %d/%d\n",s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den); } }else{ s->avctx->sample_aspect_ratio= -- 1.7.5.1 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
