On Tue, 17 Feb 2009, Eric Lund wrote:

> Martin,
>
> I managed to get the transcoded files to play cleanly with the sync
> pretty darn close (close enough to fix with a few record button presses)
> by changing the script to generate the following:
>
>     mencoder -of mpeg -mpegopts format=mpeg  -audio-density 4
>              -ovc copy -srate 48000 -oac mp3lame
>              -lameopts cbr:br=192:preset=192 \
>              -audio-preload 0.0 3021_20090205210000.mpg \
>              -o 3021_20090205210000.mpg.mpg

FWIW this all seems a little over-complicated (as does Roger Heflin's 
transcode script). I find the command line required for ffmpeg to be much 
simpler than for mencoder.

To transcode everything (useful for non-MPEG1/2 encoded files):

ffmpeg -i source.avi -target pal-dvd -acodec libmp3lame output.mpg
or
ffmpeg -i source.avi -target pal-svcd output.mpg
or
ffmpeg -i source.avi -target pal-vcd output.mpg

Take your pick from the above depending on the quality/bitrate of MPEG2


If your file already contains MPEG1/2 video of an appropriate resolution 
then you can just go for:

ffmpeg -i source.mpg -target pal-svcd -vcodec copy output.mpg

Obviously for NTSC-resolution video you'll have to change the pal-dvd, 
pal-svcd or pal-vcd to ntsc-dvd/ntsc-svcd/ntsc-vcd

If you really want widescreen programs that come out of the end of this to 
be letterboxed so that you can leave your TV permanently in zoom mode 
(which I believe Roger Heflin's scripts produce), then just put your MVP 
into 4:3 mode rather than 16:9 mode.

Cheers,

Simon

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