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| author | Anton Khirnov <anton@khirnov.net> | 2023-05-05 15:17:37 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2023-05-15 10:31:55 +0200 |
| commit | 70433abf7fbc978b5fa0d06951d61ac18ac335f8 (patch) | |
| tree | 7f8bdb5eda69dded2bf470575a70bcfb8b06496c /libavcodec/codec_desc.c | |
| parent | 78e84c054a2a04edeea25e9ee54d0fb172cd7053 (diff) | |
| download | ffmpeg-70433abf7fbc978b5fa0d06951d61ac18ac335f8.tar.gz | |
lavc/codec_desc: add a property for codecs that support field coding
Multiple places currently use AVCodecContext.ticks_per_frame > 1 to
identify such codecs, which
* requires a codec context
* requires it to be open
Diffstat (limited to 'libavcodec/codec_desc.c')
| -rw-r--r-- | libavcodec/codec_desc.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index d40977d6b3..49dddd1a49 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -38,14 +38,20 @@ static const AVCodecDescriptor codec_descriptors[] = { .type = AVMEDIA_TYPE_VIDEO, .name = "mpeg1video", .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), - .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER, + .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER | + // FIXME this is strigly speaking not true, as MPEG-1 does + // not allow field coding, but our mpeg12 code (decoder and + // parser) can sometimes change codec id at runtime, so + // this is safer + AV_CODEC_PROP_FIELDS, }, { .id = AV_CODEC_ID_MPEG2VIDEO, .type = AVMEDIA_TYPE_VIDEO, .name = "mpeg2video", .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"), - .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER, + .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER | + AV_CODEC_PROP_FIELDS, .profiles = NULL_IF_CONFIG_SMALL(ff_mpeg2_video_profiles), }, { @@ -225,7 +231,8 @@ static const AVCodecDescriptor codec_descriptors[] = { .type = AVMEDIA_TYPE_VIDEO, .name = "h264", .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), - .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_LOSSLESS | AV_CODEC_PROP_REORDER, + .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_LOSSLESS | + AV_CODEC_PROP_REORDER | AV_CODEC_PROP_FIELDS, .profiles = NULL_IF_CONFIG_SMALL(ff_h264_profiles), }, { @@ -529,7 +536,8 @@ static const AVCodecDescriptor codec_descriptors[] = { .type = AVMEDIA_TYPE_VIDEO, .name = "vc1", .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"), - .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER, + .props = AV_CODEC_PROP_LOSSY | AV_CODEC_PROP_REORDER | + AV_CODEC_PROP_FIELDS, .profiles = NULL_IF_CONFIG_SMALL(ff_vc1_profiles), }, { |