On Fri, 15 Oct 2004, sean wrote:
The DV-to-DVD-HOWTO in the transcode docs uses these flags for mpeg2enc:
F 8, -c -q 6 -4 2 -2 1 -K file=matrix.txt -R 2
I think that's a lowercase 'f' instead of 'F', as in "-f 8" and not "-F 8". -F is the frame rate and 8 corresponds to 60 frames/sec and that's one of the HDTV rates (1280x720 progressive at 60 fps).
and usually i can't find the shift key.
.............
The main reason the tables were created and the encoder extended to
accept new tables _and_ tables from external files was to allow the
user to tailor the bitrate. Perhaps the TMPGEnc and Kvcd tables were not quite a high enough bitrate/quality - you really can't use the
"-H" (hi res) tables, the bitrate goes thru the roof. So, pick
a compromise - use part of the hi res tables but part of the other
tables which give a lower bitrate.
Maybe the Kvcd tables lost a little too much detail - so use the hi-kvcd tables, you'll gain some/most of the benefit of the kvcd tables but preserve (at the expense of a few more bits) more quality.
Thanks for the explanation. I'm trancoding a bunch of family dv tapes. Speed, even file size, isn't much of an issue. I just let it run all night. I'll keep it in my script.
mpeg2enc -v 0 -I 1 -f 8 -b 8500 -F 4 -n n -a 2 -o out.m2v -c -q 4 -4 1 -2 1 -K file=matrix.txt -R 2
thanks
sean
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