Movie Thumbnailer (mtn) saves thumbnails (screenshots) of movie or video files to image files (jpg, png).
It uses FFmpeg's libavcodec as its engine, so it supports all popular codecs, e.g. h.265/hevc, h.264, mpeg1, mpeg2, mp4, vc1, wmv, xvid, divx...
mtn was originaly developed by tuit (tuitfun); though most of its magic is actually done
by FFmpeg libraries.