>here is the line I am using
>
>cat *.ppm | ppmtoy4m -F 18000:1000 -L | y4mscaler -I sar=1:1 -O size=720x576
>-O chromass=420_MPEG2 -O sar=PAL | yuvdenoise -b 20,20,680,536 -r 16 -t 2 -c
>80 -F -L 160 | mpeg2enc -r 16 -I 0 -B 96 -g 6 -G 15 -a 1 -H -4 2 -2 1 -F 2 -f
>8 -M 2 -p -o test_pulldown.mpeg
>
>Or either using yuvfps ?
>Any suggestion welcome
Well, no suggestions for your framerate stuff, but for the rest...
In general, unless you have a very specific need, don't specify
options which override input-stream parameters.
The "-I sar=1:1" to y4mscaler is unnecessary --- the correct SAR will
be read from the stream which ppmtoy4m creates. (And if that SAR
is incorrect, change it by the '-A' option to ppmtoy4m --- i.e.,
-fix- the source, instead of -overriding- the source.)
Same goes for mpeg2enc's "-a 1", "-F 2", and "-I 0".
For y4mscaler, you could use "y4mscaler -I norm=PAL -O preset=DVD",
and the 'norm=PAL' is only necessary because of the weird framerate.
(If it were 25fps, y4mscaler would decide that it's PAL.)
If you want to use the 704x576 framesize, (until I make a preset
option for it) you could do
"y4mscaler -I norm=PAL -O preset=DVD -O size=704x576"
The "-O size=" will override the size set by the preset; actual
bounds/cropping/etc calculations aren't performed until all of
the arguments are processed (and later arguments overwrite earlier
ones).
-matt m.
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