On: Make timelapses easily using FFmpeg

[salzig]

Just dropping this "random" ffmpeg command here, as a reminder that you can turn video files into actual transparent webm using

    ffmpeg -t 5 -i example.mp4 -c:v libvpx-vp9 -b:v 2M -filter_complex "[0:v]chromakey=0x00ff00:0.3:0.2[out]" -map "[out]" -map 0:a stop.webm`

where `example.mp4` is a video with the typical green background.

Maybe someone needs it :)