Carles Vila <cvilad <at> gmail.com> writes: > $ ffmpeg -i frm_%6d.j2c -c:v prores -profile:v 3 -r 24 Move "-r 24" before "-i" and make it "-framerate 24": https://ffmpeg.org/ffmpeg-formats.html#image2-1 (Input option "-r" will be translated to "framerate" but better explicitely use it.) Carl Eugen