[MPlayer-users] Mencoder seems to skip duplicate frames - swi tch?

[Luis.F.Correia]

duplicate frames afre somewhat normal when the movies are encoded from
24 fps (film) to 29.97 (NTSC).

Search a bit for 'inverse telecine', it should provide some answers.

For an example, I converted some weeks ago the very old Spaceballs movie,
that i got from a friend in Brasil in DVD.

The conversion came out ok, but every 4 frames, mencoder droped a
duplicate frame. And also it took a lot longer to encode the movie...

-----Original Message-----
From: Hans Meine [mailto:meine at kogs1.informatik.uni-hamburg.de] 
Sent: Monday, March 10, 2003 4:52 PM
To: MPlayer user's list.
Subject: Re: [MPlayer-users] Mencoder seems to skip duplicate frames -
switch?


[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html] Hi
again!

What a pity that I did not get any answer yet ;-}, I'd like to ask again:
- Can I prevent mencoder/mplayer from skipping duplicate frames?
- Or can I tell mencoder with -oac copy and -ovc copy to use a concrete
(e.g. 
+400ms) A/V sync offset?

> I created a three-pass DivX from a DVD and now I want to insert 
> another audio stream (other language) into the resulting .avi. What I 
> did is create a new frameno.avi and call mencoder with -oac copy and 
> -ovc copy. That works - somehow. ;-/
>
> The problem is that it detects some duplicate frames in my movie.avi: 
> Ten at the beginning and another two at 54% and 99% which results in 
> bad A/V sync. If I adjust the A/V sync on playback to 400ms (10/25 
> frames/sec), it seems to be fine. Now how can I
> - prevent skipping those frames or
> - adjust the A/V sync with mencoder to create at least a better .avi 
> (which will have a /little/ async error after the 54% frame)?
>
> (I am running MPlayer from CVS, currently about a week old)

Hoping someone can/will help,
  Hans (who would else have to re-encode the whole video stream :-( )

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