[MPlayer-users] Forcing framerates

[Corey Hickey]

Richard Bromley wrote:
> I have a question about forcing framerates with MPlayer. If I have a
> video encoded at, say, 25 frames per second and force MPlayer to play
> it back at 24 frames per second via the -fps option, how will this
> affect A/V synchronization? Does the "autosync" mechanism prevent
> desynchronization in this example and if so, how exactly? Thanks in
> advance.

Based on a quick test, it looks like the difference between 24 and 25
fps is small enough that mplayer automatically alters the fps to
compensate, resulting in no particular change.

Anyway, I think what you want is to use '-speed 24/25'. The audio will
be slightly lower-pitch, naturally.

-Corey