[MEncoder-users] avi->dvd: desync problem

[Rich Felker]

On Mon, Nov 21, 2005 at 10:23:45AM +0100, Tomá? Ba?ant wrote:
> 
> 
> Rich Felker wrote:
> >On Wed, Nov 16, 2005 at 10:26:14AM +0100, Tomá? Ba?ant wrote:
> >
> >>i am solving the convertion of 24000/1001 fps AVI with AC3 audio -> 
> >>30000/1001 MPEG2 (as input for dvdauthor) while preserving the audio 
> >>track as is. my command is following:
> >>
> >>#!/bin/bash
> >>mencoder galaxy.avi \
> >>-oac copy \
> >>-mc 0 \
> >>-of mpeg \
> >>-mpegopts format=dvd:telecine \
> >>-ovc lavc \
> >>-lavcopts 
> >>vcodec=mpeg2video:aspect=4/3:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=15: 
> >>\
> >>-ofps 30000/1001 \
> >
> >
> >You want -ofps 24000/1001. Isn't this in the documentation for the
> >telecine option?
> 
> it is, but -ofps 24000/1001 is not valid for DVD standard and my YAMADA 
> player will hang after a few minutes...

The final output file is NOT 24000/1001 fps but 30000/1001 "fps".
However, the _encoding_ needs to be done at 24000/1001 and then the
muxer modifies it with telecine flags to 30000/1001.

Rich