In this example, VP9 can encode videos at half the file size \ud83d\ude04\ud83d\udc4f You can check out Google's VP9 encoding guide<\/a> for their recommend settings or the FFmpeg VP9 guide<\/a>.<\/p>\n\n\n\n Here's an example from the FFmpeg guide:<\/p>\n\n\n\n And here's Google's \"Best Quality (Slowest) Recommended Settings\". You need to run the first line(s). It will create a log file (and warn you the out.webm is empty). On the second pass, the video will be output.<\/p>\n\n\n\nlibvpx<\/code> is the VP8 video encoder for \u200bWebM. FFmpeg and WebM Encoding Guide<\/a> will walk you through webm specifics.<\/p>\n\n\n\ninput.mov<\/code> is converted to output.webm<\/code> with a constant rate factor of 10<\/code> (lower is higher quality) at a bitrate of 1M<\/code>. Changing the bitrate to something lower (e.g. 700K<\/code>) will result in lower file sizes and lower quality. If your video does not have audio, you may leave off the -acodec libvorbis<\/code> part.<\/p>\n\n\n\nffmpeg -i input.mov -vcodec libvpx -qmin 0 -qmax 50 -crf 10 -b:v 1M -acodec libvorbis output.webm<\/pre>\n\n\n\n
<\/a><\/h4>\n\n\n\n
VP9<\/h4>\n\n\n\n
ffmpeg -i input.mov -vcodec libvpx-vp9 -b:v 1M -acodec libvorbis output.webm<\/pre>\n\n\n\n
ffmpeg -i <source> -c:v libvpx-vp9 -pass 1 -b:v 1000K -threads 1 -speed 4 \\\n -tile-columns 0 -frame-parallel 0 -auto-alt-ref 1 -lag-in-frames 25 \\\n -g 9999 -aq-mode 0 -an -f webm \/dev\/null\n\n\nffmpeg -i <source> -c:v libvpx-vp9 -pass 2 -b:v 1000K -threads 1 -speed 0 \\\n -tile-columns 0 -frame-parallel 0 -auto-alt-ref 1 -lag-in-frames 25 \\\n -g 9999 -aq-mode 0 -c:a libopus -b:a 64k -f webm out.webm\n<\/pre>\n\n\n\n