This script re-encodes the seconds between second 25 and 45 of an
input.mov video from
mp4; rotates the frames 180 (the
hflip,vflip flags flip all pixels vertically and horizontally); removes the audio (with the
-an flag); and speeds up the video (i.e., skips frames, with the flag
setpts=0.05*PTS, which you could adjust to have more frames, for instance, as
ffmpeg -ss 00:00:25 -to 00:00:45 \ -i "input.mov" \ -an -filter:v "hflip,vflip,setpts=0.05*PTS" \ "output.mp4"