SVT-AV1 is only available in FFMPEG version 5. FFMPEG Command: ffmpeg -i input.mkv -c:v libsvtav1 -preset 8 -crf 36 -svtav1-params "fast-decode=1:tune=1:lookahead=120" -c:a libopus -b:a 64k output.webm Bitrate: For 720p 60 fps, less than 800 kbps. For 1080p 60 fps, less than 1200 kbps. For 1440p 60 fps, less than 3600 kbps. 0:01 Best Quality 0:27 High Quality 0:45 Medium Quality 1:02 Low Quality