I made this webm using ffmpeg. Firstly, I ripped a section of video. ffmpeg -i starwars.mkv -vcodec copy -acodec copy -ss 00:19:23 -to 00:19:33 out.mkvffmpeg -i starwars.mkv -vcodec copy -acodec copy -ss 00:19:23 -to 00:19:33 out.mkv Then I did the first pass of two pass encoding. ffmpeg -i out.mkv -c:v libvpx-vp9 -pass 1 -qmin 0 …

This is how to create a nice webm using ffmpeg on Linux. Firstly, capture the section of video you wish to be encoded as a webm. This command will strip out a section of video from 00:09:23 to 00:09:33 and save it in the same format as the existing file. [email protected]:~/Videos$ ffmpeg -i total.mkv -vcodec …