> From: Steven Boswell <[EMAIL PROTECTED]>
> >You should use the -S -B option of mpeg2enc for spliting videos.
> 
> I don't understand.  The -S option of mpeg2enc doesn't actually seem to
> produce separate files, just sequence-end marks; from my experience,
> only mplex actually splits videos into separate files.  Also, I

        Right, so give a printf-like name to mplex thus:

                mplex ... -o foo-%d.mpg foo.m2v foo.mp2

        and mplex will use the -S points set by mpeg2enc and create multiple
        files called "foo-1.mpg foo-2.mpg ..."

> But if I drop the -b option, I'll get 7500 kbps, and then the video

        Use a -q of 6 or perhaps 8 *and* add the -N option to mpeg2enc's
        usage.   I've found that the mild high frequency reduction from -N
        does wonders for the average bitrate.

> won't fit onto the DVD.  Also, you really think I need to use the
> denoiser on a high-quality S-Video source like a LaserDisc?

        Yes.   The settings do not need to be as aggressive as for VHS
        sources but going thru the denoiser will help a lot.   Try "-l 1" or
        perhaps "-l 2" to yuvdenoise (and perhaps raise the search radius
        with "-r 16" or "-r 24").    Also remember to black out any noise/junk
        (if any) at the edges ('-b ...' to yuvdenoise or ACTIVE_* to yuvscaler).

        If you're coming from S-Video (analog) then I've found that using
        704x480 (which is the NTSC frame size) instead of 720x480 (which has
        an extra 8 pixels on each side) can save ~2% on the bitrate (fewer
        pixels to encode of course :)).  You can make sure that the frame is
        centered by using the 'y4mshift' program (in the development version
        of mjpegtools for certain, I'm not sure if it's in the 1.6.x release
        version).

        Good Luck!

        Steven Schultz


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