[FFmpeg-devel] [PATCH] libvpx: Disable frame dropping as rate control method
Sun Jun 6 23:09:33 CEST 2010
On Sun, 6 Jun 2010, Reimar D?ffinger wrote:
> On Sun, Jun 06, 2010 at 11:31:26PM +0300, Martin Storsj? wrote:
> > * trade-off is often acceptable, but for many applications is not.
> Someone tried hard not disadvantage any option when they wronte this...
> > I'm not particularly fond of this feature, I'd much rather get a bitrate
> > slightly too high compared to suddenly getting half the framerate. The
> > attached patch disables this in the libvpx wrapper - is this ok as
> > default, or should it be changeable through some AVCodecContext field?
> I think it's ok to leave disabled. Is the encoder even significantly better
> and making frame-drop decisions than an external application would be?
> (seems likely that yes, but still).
It doesn't feel like that in my tests at least - for some inputs, it
simply starts dropping every second frame halfway through the clip, and
keeps dropping every second one until the end. When I disabled this, the
output bitrate didn't seem to change significantly at that spot where the
dropping began either. So that's even less a reason for keeping it enabled
More information about the ffmpeg-devel