if (is_main_chain) {
YCbCrFormat output_ycbcr_format;
- // We actually output 4:2:0 in the end, but chroma subsampling
+ // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
// happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
output_ycbcr_format.chroma_subsampling_x = 1;
output_ycbcr_format.chroma_subsampling_y = 1;
-
- // Rec. 709 would be the sane thing to do, but it seems many players
- // (e.g. MPlayer and VLC) just default to BT.601 coefficients no matter
- // what (see discussions in e.g. https://trac.ffmpeg.org/ticket/4978).
- // We _do_ set the right flags, though, so that a player that works
- // properly doesn't have to guess.
- output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
+ if (global_flags.ycbcr_rec709_coefficients) {
+ output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
+ } else {
+ output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
+ }
output_ycbcr_format.full_range = false;
output_ycbcr_format.num_levels = 256;