[FFmpeg-user] Slow conversion when using very low frame rates

[Tobias Rapp]

Carl Eugen Hoyos wrote:
> > the processing needs still around 80% of the original 
> > processing time even though only about 1% of the frames 
> > are passed through. It seems like FFmpeg is still 
> > reading and decompressing each image before dropping 99% 
> > of the frames.
> 
> The alternative is theoretically possible (for intra-only 
> codecs which is not known from within ffmpeg.c) but not 
> implemented.
> Patch welcome!

OK, will try later to find out how difficult it would be to implement that
optimization.

Best regards,
Tobias