ffmpeg -i input.mkv -c:v libvpx-vp9 \ -b:v 0 -crf 18 -row-mt 1 \ -tile-columns 4 -frame-parallel 1 \ -auto-alt-ref 1 -lag-in-frames 25 \ -speed 2 -quality good \ -c:a libopus -b:a 128k \ output.webm
: Compared to standard H.264, this setup typically yields a 30-50% reduction in file size at the same perceived quality level. vera s05 libvpx best
ffmpeg -i output.webm -vf "psnr=stats_file=psnr.log,ssim=stats_file=ssim.log" -f null - ffmpeg -i input
When someone refers to “Libvpx” on a device like the Vera S05, they usually mean as opposed to relying on the chip’s native hardware decoder. vera s05 libvpx best