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- An excellent starting point for this is: https://trac.ffmpeg.org/wiki/colorspace
- https://github.com/RxLaboratory/DuME/blob/master/src/FFmpeg_COLORS.md
- https://medium.com/invideo-io/talking-about-colorspaces-and-ffmpeg-f6d0b037cc2f
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Example Usages
| Name | Source | ffmpeg flags | Description |
|---|---|---|---|
| ffmpeg colormatrix | https://trac.ffmpeg.org/wiki/colorspace | -sws_flags spline+accurate_rnd+full_chroma_int -vf "colormatrix=bt470bg:bt709" -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 | 8bpc only |
The sws_flags are needed for the RGB to YUV conversion. -color_range 1 # mpeg see: FFmpeg/pixfmt.h at master · FFmpeg/FFmpeg · GitHub -colorspace 1 # BT709 FFmpeg/pixfmt.h at master · FFmpeg/FFmpeg · GitHub -color_primaries 1 # BT709 FFmpeg/pixfmt.h at master · FFmpeg/FFmpeg · GitHub -color_trc 1 # bt709 FFmpeg/pixfmt.h at master · FFmpeg/FFmpeg · GitHub - Color Transfer Characteristics. | |||
| ffmpeg colorspace | https://trac.ffmpeg.org/wiki/colorspace | -sws_flags spline+accurate_rnd+full_chroma_int -vf "colorspace=bt709:iall=bt601-6-625:fast=1" -color_range 1 -colorspace 1 -color_primaries 1 -color_trc 1 | Supports 10bpc and 12bpc, SIMD (faster), better quality than colormatrix. |
Compression quality
Testing Methodology
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https://ottverse.com/vmaf-ffmpeg-ubuntu-compilation-installation-usage-guide/ - building VMAF on ubuntu.
| Name | Source | ffmpeg flags | Description |
|---|---|---|---|