[Ffmpeg-devel] frame accept question

[Måns Rullgård]

Rich Felker said:
> 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.

Which is more evil depends entirely on the situation.  I can well
imagine times when a low frame rate is adequate, but the level of detail
in each frame is important.

-- 
M?ns Rullg?rd
mru at inprovide.com