I have used FFmpeg to extract PNG images for each frame of some short AVI files.
These AVIs were created for a research project in which a person's movements
were recorded over about 2 seconds at 25 fps. These extracted images are then
processed and graphical objects are often superimposed on them; but, the PNG
images are always kept at the same size (720 x 576 Px).
I use FFmpeg to merge these new PNG images back into an AVI file; then use Miro
to convert the AVI to an MP4.The problem that I have been unable to solve is
that when I playback this MP4 file in an HTML5 video player with FireFox (or
Chrome or IE) they are so short that the viewer has little chance to examine
them. I would like to be able to show them frame-by-frame; but, this apparently
is a rather difficult problem for the HTML5 video player.
Is it possible to use FFmpeg to create a very slow AVI (e.g. 1 frame per second)
or an MP4 file directly, that would allow the user to study the individual
images? I would be glad to provide one of these short AVIs for testing purposes
if needed.
--V
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