[MPlayer-users] converting 25 fps -> 23.976 fps?

[Andres Heinloo]

Hi,

I have converted NTSC movies (23.976 fps) to PAL by playing the movie a
little bit faster and resampling audio at 48kHz with sox. I think even in
case of commercial DVDs, movies (24fps) are converted to PAL (25fps) by
simply playing them a bit faster. Full interpolation of frames probably
takes a huge amount of CPU power. I guess downconverting from 29.976 fps
to 23.976 fps (with inverse telecine) makes sense if it is an NTSC movie
that has been upconverted with 3:2 pulldown (telecine).

Andres.


On Mon, 15 Dec 2003, * wrote:

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hello, I noticed that when I encode a vob stream at 25 fps
> to an avi at 23.976 fps (using -ofps 23.976) there are
> subtle jerks in action about every second.  I assume this is
> due to the way mencoder does the conversion (drops a frame
> occasionally as opposed to interpolating smoothly between
> frames)?
>
> If this is true, is there any way to make it interpolate
> smoothly?  Or is that not desirable for some other reason?
> Likewise, should I not try downconverting vobs at 29.976 fps
> to 23.976 fps?  Thanks!
>
>
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