[MPlayer-users] Telecine does not seem to be working

[John Brown]

Nico Sabbi <nicola_sabbi <at> fastwebnet.it> writes:

> 
> Il Thursday 27 September 2007 23:05:59 John Brown ha scritto:
> 
> > mplayer -demuxer lavf test.mpg causes the video to play faster
> > than the audio. When the video reaches 30 seconds, the audio is
> > at about 26 seconds. Before, it was the other way around. Also,
> > the desync is smaller with -demuxer lavf.
> >
> > I ran mencoder again, but I extended the length to 90 seconds.
> >
> > 1) MEncoder said, Video Stream 90.007 secs, Audio 90.016 secs
> > 2) mplayer -identify says ID_LENGTH=80.75
> > 3) PowerDVD (the software that came with my DVD burner) thinks
> >    that it is 1:26 (but it plays it in sync)
> > 4) Media Player Classic thinks that it is 1:24, and also plays
> >    it in sync
> > 5) As above with VLC
> >
> > I don't have to telecine. I can just ofps 30000/1001 instead.
> > I only do it because I assume that duplicating frames wastes
> > bits. However, I need to be sure that the DVD player will
> > play it properly when I make the DVD.
> 
> did mencoder duplicate or drop frames when encoding?
> did you verify that the source material was encoded at
> exactly 24000/1001 fps?
> 

It is a weekly anime series that I have been transcoding for years. I have not
made a DVD recently, because I can put 15 or more episodes on one DVD. The
episodes are always encoded by the same organization, and telecine always worked
in the past. mplayer -identify says that the frame rate of the source is 23.976,
other places in mplayer output say 23.98, but whenever I see numbers like that,
I always use 24000/1001 without a problem.

It is true that if I leave out -ofps 24000/1001, MEncoder halts with:
MPEG1/2 does not support 27021/1127 fps, but I never leave it out.