Hello, For some here the answer will probably be know right away. That is why I am writing, after long googling. I would like to create a sort of video presentation from images. However, I would like that every slide (image) is displayed for a different time duration. This is just the first step; next i would like to combine voice with that, but it is probably another problem, for later. Hence, I have a sequence of images y-%2d.png The following works for me: ffmpeg -framerate 1/10 -i y-%2d.png -c:v mpeg4 -vf "fps=2,format=yuv420p" out.mp4 And the following works, too: ffmpeg -r 1/2 -start_number 7 -i y-%2d.png -c:v mpeg4 -vf "fps=2,format=yuv420p" out.mp4 However, how to control the time of displaying individual images? Is that possible at all? I thought that something like this may work: ffmpeg -r 1/5 -i y-01.png -r 1 -i y-02.png -c:v mpeg4 -vf "fps=2,format=yuv420p" out.mp4 It does not. The first image is displayed, only. Kind regards from Poland, zb. -- Zbigniew KozioĊ http://nanophysics.pl mobile: 500 685 477 stationary at home: 17 229 8940