[MPlayer-users] NTSC : 24 or 23.976 fps ? NOVIRUS

[D Richard Felker III]

On Thu, Oct 23, 2003 at 09:16:36PM +0100, Eric Fernandez wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi
> I would like to have some information regarding the region 1 DVDs. NTSC has
> a 29.97fps frame rate and has to be converted to be shown at correct
> speed.What speed should it be ? 24 or 23.976fps to be perfectly synchronised
> with audio ? I searched on Google but was lost in the links, showing
> interesting technical data about telecine pulldown, but not a clear answer
> in practice.
> As a European, I don't have a lot of region 1 DVD to test too.
> 
> Could you please answer this or indicate me a good appropriate link ?
> 
> Thanks a lot.
> 
> Eric

For ripping, you need to use 23.976 fps unless you plan on adjusting
the audio speed too (which mencoder can't do). Then if you want to
correct for the (very small) speed inaccuracy, you can use -speed
24/23.976 when playing your rip with mplayer to have it be exactly the
right framerate.

Rich