[Ffmpeg-devel] frame accept question

[Rich Felker]

On Fri, Oct 07, 2005 at 08:50:24AM +0100, M?ns Rullg?rd wrote:
> Rich Felker <dalias at aerifal.cx> writes:
> 
> >> The easiest solution to this is of course to just reduce the 
> >> framerate... to maybe 15 fps.
> >
> > Reducing the resolution is a much better option. Reducing framerate
> > is evil..
> 
> Scaling down is much more computationally intensive than dropping a
> few frames.  Depending on circumstances, scaling may not be
> affordable.

Dropping frames is nearest-neighbor sampling in time. If you're
willing to do something that evil, you can do it in space instead with
less disastrous results. No impact whatsoever on performance for
vertical integer-factor point-sample downscale.

Rich