[MEncoder-users] Conversion of 720p mpeg capture from 60 fps to 30 fps where original was 24 fps

[Laine Lee]

I routinely have 1280X720 mpeg files recorded via ATSC using an EyeTV device
along with EyeTV software that I want to record to DVD (standard format,
usually dual layer capacity). In most cases the original content for these
broadcasts are movies with a probably original frame rate of 24 fps. I've
gathered information on this type of conversion from this list and elsewhere
since I started using the EyeTV device because the commercial method
promoted by the manufacturer of the device and accompanying software is not
very robust for this particular kind of conversion. I have a command line
that yields fair results, but it's not ideal, because although low motion
passages look great, panning motion passages aren't coming out as smooth as
in the original 60 fps input file, and the time needed to make the
conversion for a typical feature length movie capture is excessive. Please
offer any suggestions you care to make about how to improve it. An example
command line is included below. It's 2 pass. Thanks.

mencoder -oac copy -ovc lavc -lavcopts
vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9000:vbitrate=7600:vrc_eq=te
x^qComp:keyint=18:trell:mbd=2:precmp=2:subcmp=3:cmp=3:dia=-10:predia=-10:cbp
:mv0:vqmin=1:lmin=1:dc=10:vstrict=0:aspect=16/9:vpass=1:turbo -vf
tinterlace=2,pullup=8:8:8:8:-1:1,softskip,hqdn3d=2:1:2,pp=fd,scale=720:480,h
arddup -of mpeg -mpegopts format=dvd:tsaf  -ofps 30000/1001 -o /dev/null
/Users/me/input.mpg && mencoder -oac copy -ovc lavc -lavcopts
vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9000:vbitrate=7600:vrc_eq=te
x^qComp:keyint=18:trell:mbd=2:precmp=2:subcmp=3:cmp=3:dia=-10:predia=-10:cbp
:mv0:vqmin=1:lmin=1:dc=10:vstrict=0:aspect=16/9:vpass=2 -vf
tinterlace=2,pullup=8:8:8:8:-1:1,softskip,hqdn3d=2:1:2,pp=fd,scale=720:480,h
arddup -of mpeg -mpegopts format=dvd:tsaf  -ofps 30000/1001 -o
/Users/me/output.mpg /Users/me/input.mpg

 
-- 
Laine