[MPlayer-users] Which default framerate?

[Jukka Tastula]

On Wednesday 26 June 2002 23:39, GD Lewis wrote:

> If the output is 23.98 fps, wouldn't I use -vfr 1 (24 fps), and if it is
> 29.97 wouldn't I use option 4 (30 fps)?

Right, my typo. Sorry for the confusion :)

> I'm not really well versed on the standards, is there some sort of
> formula to determine which option is best suited to the indicated
> framerate?

For anything that was originaly shot on film you should use 23.98fps. And no, 
there's no magic switch to tell you if it was, except looking at the video of 
course (pulldown'd film jerks, video originaly shot at 30fps does not).

Mplayer output _is_ the best way to find out. That is if whoever ripped/capped 
the clip knew what (s)he was doing. And even if he didn't you shouldn't be 
getting any audio sync problems, the picture just goes jerky because there 
will be duplicate frames in the stream (or rather some frames are shown for a 
longer time than the others). On an NTSC television you'll get this anyway I 
guess.