David Liontooth wrote:
> To use the frame_interval and export a frame every ten seconds, I would
> need to be able to use a framerate switch, as in -f 29.970. 
Poor logic -- transcode sees the framerate already. But I'd need a
fraction or decimal in the framerate value,
When I test that, I find that the framerate switch is working properly
and does not give me twice as many exported images as requested.

nice -n 19 transcode -o $FIL.img/$FIL.img -y im -F png -x ffmpeg,null -i
$FIL.avi --frame_interval 299.7

works as advertised and gives me an image almost exactly every ten
seconds -- it's still off by a frame every ten minutes or so, possibly
because the real fraction we need is 30000/1001.

Dave



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