Last modified: 24-04-2013 11:40:34
Working on computer graphics, I often find the need to make a movie out of a
sequence of images representing some animation. Fortunately, this is very easy
to do with ffmpeg.
The following command will make a 60 FPS movie out of all images named
image_0000.png, image_0001.png and so on:
$ ffmpeg -r 60 -i image_%04d.png movie.mp4
Sometimes you do not have enough images in a sequence for 60 FPS (or even 30
FPS). It could be that you only have enough images to show a single frame
per second. Nevertheless, you would still to make a movie. Unfortunately, most
players do not handle movies with really low frame rates very well, so if you
do the naive thing of just setting -r 1 in the command above, playback will
likely be problematic. In this case it can be useful to specify a different
frame rate for the output movie:
$ ffmpeg -r 1 -i image_%04d.png -r 30 movie.mp4