fatalaccidents <thefatalaccidents <at> gmail.com> writes: > cat *.jpg | ffmpeg -f image2pipe -r 10 -vcodec mjpeg > -i - -vcodec copy out.mp4 This command produces a full-scale video (because your jpgs are full-scale), most video player applications expect MPEG-style videos. ffplay plays the video correctly afaict. Carl Eugen