[MPlayer-users] mencvcd problems

[Juergen Hammelmann]

Am Mittwoch, 3. Juli 2002 05:01 schrieb Gregory S. Hayes:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>
> > for this we have to create a new option,
> > with mpeg2enc option -a you set the correct aspect ratio.
> >
> > I will think over it, you can change the script to your needs.
>
> I edited the script a little so that this happens:
>
> yuvdenoise < stream.yuv | \
> yuvscaler -M WIDE2STD -M BICUBIC -O SVCD -n n | \
> mpeg2enc -M 2 -s -f 5 -b 2500 -B 260 -V 230 -p -I 0 \
> -a 2 -g 6 -G 15 -r 16 -F 1 -n n -4 2 -2 1 -o letterbox-svcd.m2v
>
> I then make the audio in the standard way:
>
> mp2enc -b 224 -r 44100 -o letterbox-svcd.mpa < audiodump.wav
>
> but when I mplex the streams in the script with:
>
> mplex -f 5 -m 2 -V -b 230 letterbox-svcd.m2v letterbov-svcd.mpa -o
> letterbox-svcd%0.2d.mpg
>
> the audio is off sync. The video looks perfect and is exactly what I
> want, but the audio is way off. I tried various -O settings, but it
> seems that if the audio syncs in one place it goes out of sync in
> others. If I encode small portions (1500 frames) the audio seems to be
> right, but not when I encode the whole thing. Also, If I encode to plain
> VCD (not SVCD), all the audio muxes correctly and mpeg2enc changes the
> output to the special aspect of 12. What can I do for the same audio
> sync with svcd?

hmmm, try another frame rate in mpeg2enc with -vfr/-F option, or give manually 
a sync rate.

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