Re: more on frame timing, framerate-changing filters

On Wed, Jun 11, 2003 at 05:51:37PM +0800, Anders Johansson wrote:
> Hi,
>  
> > Also, on another matter. I know G1's whole a/v sync system has been
> > based on a lot of approximations and feedback measurement. This is
> > great for mplayer, and probably also for encoding from variable-fps
> > input to fixed-fps avi output with mencoder. However, especially with
> > the new perfect-a/v-sync mpeg code in G2, I'd really like to see
> > support for "exact" timing in G2. Maybe a way to use a time division
> > base and specify all pts stuff in terms of those (exact) units. It
> > would be much perferred for precision encoding and video processing
> > work, and nice for output to containers like nut (mpcf) which will
> > support such things. 
> 
> I'de like to see this as well. The sync should not be based on audio
> but instead on the realtime clock or an external timebase (worldclock
> cards can be purchased for PC). If the soundcard isn't synked to the
> RTC then one could fix it using sample stuffing or dropping (inaudible).

Well what you said is a good thought too, but I don't think it's
related to what I said... :)

Rich