[FFmpeg-devel] Overlay Text at Specific Times

[Stefano Sabatini]

On date Tuesday 2011-06-14 09:32:56 -0700, Joshua Grauman encoded:
> Thanks, these sound like the right direction. Just to be completely
> explicit, am I correct that these are not currently implemented and
> require coding? I'm possibly willing to code it, supply a patch,
> etc., especially if someone would be willing to help walk me through
> it a bit. I think I'd go for adding time parameters to the overlay
> filter, as this might add more flexibility for things other than
> text. Thoughts on how hard this would be?

It shouldn't be too hard. Look how it is done in the crop filter,
you'll need to move the evaluation from the init to the start_frame()
function, as the evaluation will be done per-frame.
-- 
FFmpeg = Forgiving and Fanciful Mysterious Philosophical Entertaining Gadget