2018-11-30 18:51 GMT+01:00, José María Infanzón <jocheinfa at gmail.com>: >>> A freeze detect filter have been recently add : >>> https://www.ffmpeg.org/ffmpeg-filters.html#freezedetect >> In which version? I've compiled ffmpeg 4.1 On this mailing list, only current FFmpeg git head is supported (your question is an explanation why). Carl Eugen