On Sun, 17 Jul 2005, Raena Lea-Shannon wrote:
> I am encoding from NTSC video to dvd. It is a very long film 165mins
Hmmm, is this going to use a single layer or dual layer DVD?
For a single layer DVD the maximum bitrate you'll be able to use is
about 3400Kbit/sec and that is going to be marginal quality for full
frame (720x480) images.
A dual layer disc would be able to use a bitrate of about 6200Kb/s
(dual layer disc are not exactly 2x a single layer).
For extended play time on single layer media the 1/2 D1 ("CVD")
frame size can be used - you give up a little spatial resolution but
the results will look a lot better than trying to use a low bitrate
with the full frame size. Adding something like 'y4mscaler -O
preset=CVD"'
to the processing would be the key. Might take a little experimentation
but the 352x480 size is a valid DVD framesize.
Cheers,
Steven Schultz
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