diff options
| author | Kieran Kunhya <kierank@obe.tv> | 2014-12-24 23:52:46 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-12-25 02:53:29 +0100 |
| commit | 1515bfb3132d9e040f856bc48fbe8a4f26b14c14 (patch) | |
| tree | bedafd9c1417049da566c0c7155c886564b20477 /libavfilter/vf_scale.c | |
| parent | b51cc701bc4ac34959944f30ca8a7e01e1338d43 (diff) | |
vf_scale: Use correct chroma positions for YUV420P
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavfilter/vf_scale.c')
| -rw-r--r-- | libavfilter/vf_scale.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c index 64b88c2357..f77884c27a 100644 --- a/libavfilter/vf_scale.c +++ b/libavfilter/vf_scale.c @@ -373,6 +373,17 @@ static int config_props(AVFilterLink *outlink) av_opt_set_int(*s, "dst_format", outfmt, 0); av_opt_set_int(*s, "sws_flags", scale->flags, 0); + /* Override YUV420P settings to have the correct (MPEG-2) chroma positions + * MPEG-2 chroma positions are used by convention + * XXX: support other 4:2:0 pixel formats */ + if (inlink->format == AV_PIX_FMT_YUV420P) { + scale->in_v_chr_pos = (i == 0) ? 128 : (i == 1) ? 64 : 192; + } + + if (outlink->format == AV_PIX_FMT_YUV420P) { + scale->out_v_chr_pos = (i == 0) ? 128 : (i == 1) ? 64 : 192; + } + av_opt_set_int(*s, "src_h_chr_pos", scale->in_h_chr_pos, 0); av_opt_set_int(*s, "src_v_chr_pos", scale->in_v_chr_pos, 0); av_opt_set_int(*s, "dst_h_chr_pos", scale->out_h_chr_pos, 0); |