There is a strong color shift in the reds only when encoding some content with aomenc.
This behaviour does not happen with libaom-av1 or using the same aomenc binary on nmkoder.
I tried:
changing ffmpeg version to a newer one and older one
removing all metadata with ffmpeg
re-encoding the video before
forcing rec709 in the metadata
downscaling and upscaling the video
Nothing worked.
The lossless chunks generated by neav1e does not have the issue
This are the parameters used: (yes i tried removing --transfer-characteristics=bt709 --color-primaries=bt709 --matrix-coefficients=bt709)
-pix_fmt yuv420p10le -strict -1 -f yuv4mpegpipe - | "D:\programmi\NotEnoughAV1Encodes\Apps\aomenc\aomenc.exe" - --cq-level=30 --cpu-used=4 --transfer-characteristics=bt709 --color-primaries=bt709 --matrix-coefficients=bt709 --end-usage=q --lag-in-frames=128 --kf-max-dist=99999 --disable-kf --threads=16 --tune-content=psy --sb-size=dynamic --tune=ssim --enable-qm=1 --qm-min=0 --qm-max=8 --dist-metric=qm-psnr --quant-b-adapt=1 --arnr-maxframes=15 --arnr-strength=2 --enable-cdef=0 --tile-columns=0 --tile-rows=0 sb-qp-sweep=1 enable-fwd-kf=1
There is a strong color shift in the reds only when encoding some content with aomenc. This behaviour does not happen with libaom-av1 or using the same aomenc binary on nmkoder.
I tried:
--transfer-characteristics=bt709 --color-primaries=bt709 --matrix-coefficients=bt709)-pix_fmt yuv420p10le -strict -1 -f yuv4mpegpipe - | "D:\programmi\NotEnoughAV1Encodes\Apps\aomenc\aomenc.exe" - --cq-level=30 --cpu-used=4 --transfer-characteristics=bt709 --color-primaries=bt709 --matrix-coefficients=bt709 --end-usage=q --lag-in-frames=128 --kf-max-dist=99999 --disable-kf --threads=16 --tune-content=psy --sb-size=dynamic --tune=ssim --enable-qm=1 --qm-min=0 --qm-max=8 --dist-metric=qm-psnr --quant-b-adapt=1 --arnr-maxframes=15 --arnr-strength=2 --enable-cdef=0 --tile-columns=0 --tile-rows=0 sb-qp-sweep=1 enable-fwd-kf=1these are the files: https://drive.google.com/drive/folders/1Avy3udUfltJYB8fNd-9osyHquatS2Eo3?usp=sharing I used mpv to play them back, VLC show the "red color shift" on all clips. The obs ones are the "how it's supposed to look". I also upload 2 screenshot to show the difference:
