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| author | Vittorio Giovara <vittorio.giovara@gmail.com> | 2017-08-08 16:06:29 +0200 |
|---|---|---|
| committer | Vittorio Giovara <vittorio.giovara@gmail.com> | 2017-08-10 15:32:59 +0200 |
| commit | ebf3b9e8a875eb12312460aee505118791ef805f (patch) | |
| tree | b1c68b5486fbe99749c400196ed10f446a487b46 /libavcodec/h264_slice.c | |
| parent | 19388a7200e5d99c703271f05dba1c806720e808 (diff) | |
| download | ffmpeg-ebf3b9e8a875eb12312460aee505118791ef805f.tar.gz | |
h264: Add support for alternative transfer characterics SEI
The use of this SEI is for backward compatibility in HLG HDR systems:
older devices that cannot interpret the "arib-std-b67" transfer will
get the compatible transfer (usually bt709 or bt2020) from the VUI,
while newer devices that can interpret HDR will read the SEI and use
its value instead.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Diffstat (limited to 'libavcodec/h264_slice.c')
| -rw-r--r-- | libavcodec/h264_slice.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index c6309b298c..5dd01d836e 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -1154,6 +1154,12 @@ static int h264_export_frame_props(H264Context *h) a53->a53_caption_size = 0; } + if (h->sei.alternative_transfer.present && + av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) && + h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) { + h->avctx->color_trc = cur->f->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics; + } + return 0; } |