Re: [MEncoder-users] NTSC DVD ripping - inverse telecine artifacts

Ok the best way to convert NTSC pure interlaced 30 fps to progressive
is to double the frame rate to 60 fps. Otherwise you loose a lot of
information. I would suggest trying something like this. Be careful
of frame order in the source. MPEG2 can be bootom frame first or top
frame first. (Disclaimer: Depending on your CPU, this will take a
LONG time to process, but that is the price for converting interlaced
content properly). The reason I only do one pass using constant
quantizer for the encode is because the de-interlacing takes so long.
Good luck and again let me know how it comes out.
-Justin

For top frame first (TFF) MPEG2 content:
>> mencoder dvd://1 -nosound -vf
yadif=3:1,mcdeint=2:1:10,scale=640:480 -sws 9 -ofps 60000/1001 -ovc
x264 -x264encopts
threads=auto:qp=17:qpmax=28:subq=6:partitions=all:8x8dct:me=umh:subme=6:frameref=5:bframes=3:b_pyramid:b_rdo:weight_b:keyint=250
-o Output.avi

For bottom frame first (BFF) MPEG2 content (notice the 0's for the
second options of yadif and mcdeint):
>> mencoder dvd://1 -nosound -vf
yadif=3:0,mcdeint=2:0:10,scale=640:480 -sws 9 -ofps 60000/1001 -ovc
x264 -x264encopts
threads=auto:qp=17:qpmax=28:subq=6:partitions=all:8x8dct:me=umh:subme=6:frameref=5:bframes=3:b_pyramid:b_rdo:weight_b:keyint=250
-o Output.avi

On Sun, May 4, 2008 at 4:39 PM, Benoit <kvasarnov@gmail.com> wrote:
> Hi,
>
> You were right, it seems like it is an interlaced video but yadif did not
> work well (more artifacts than before. I used the pp=lb filter instead.
>
> But I get some weird frames:
>

http://img509.imageshack.us/img509/9369/screenshot3yj0.png
>
>
> As you can see there's no more artifact but it seems like two frames are
> merged together.
>
> Do you know how to fix it?
>
>
>
>
>
> On Sat, May 3, 2008 at 1:16 AM, Justin Randall <jrrandall@gmail.com> wrote:
>
> > Hi there,
> >
> > If your source is truely 100% teleclined, then this should work well for
> > you..
> >
> > >> mencoder dvd://1 -nosound -vf
> > pullup,hqdn3d=3:2:3:3,softskip,harddup -sws 9 -ofps 24000/1001 -ovc
> > x264 -x264encopts
> >
> > threads=auto:qp=17:qpmax=28:subq=6:partitions=all:8x8dct:me=umh:subme=6:frameref=5:bframes=3:b_pyramid:b_rdo:weight_b:keyint=250
> > -o Output.avi
> >
> > Otherwise you're dealing with interlaced and this will probably work
> > better (WARNING: should take a LONG time to encode but the results
> > should be good).
> > >> mencoder dvd://1 -nosound -vf yadif,hqdn3d=3:2:3:3,harddup -sws 9
> > -ovc x264 -x264encopts
> >
> > threads=auto:qp=17:qpmax=28:subq=6:partitions=all:8x8dct:me=umh:subme=6:frameref=5:bframes=3:b_pyramid:b_rdo:weight_b:keyint=250
> > -o Output.avi
> >
> > Good luck and please let me know how these work for you.
> >
> > Thanks,
> > Justin
> >
> > On Fri, May 2, 2008 at 4:48 PM, Benoit <kvasarnov@gmail.com> wrote:
> > > Hello,
> > >
> > > I bought some DVDs of my favorite anime but I experience problems
> > encoding
> > > them.
> > >
> > > It is an NTSC Mixed progressive and telecine video (mplayer switches
> > back
> > > and forth between "30000/1001 fps NTSC" and "24000/1001 fps").
> > > I used the 'pullup' filter associated with 'softskip', which produce
> > these
> > > results with a few frames:
> > >

http://img136.imageshack.us/img136/1602/mencoderkg0.jpg
> > >
> > > Here is the telecined frame that causes problems:
> > >

http://img178.imageshack.us/img178/4061/screenshot1bf7.png
> > >
> > > I downloaded the same episode from a torrent to compare the quality.
> > The
> > > encoder did a great job and got this result:
> > >

http://img353.imageshack.us/img353/3430/mencoder2lx7.jpg
> > >
> > > I don't think this encoder used the same source as mine, but I'd like
> > to get
> > > some advice from experienced encoders to help me fix my problem and get
> > a
> > > similar quality.
> > >
> > > The command line I used:
> > > mencoder dvd://1 -nosound -ovc x264 -x264encopts
> > >
> > bitrate=1200:subq=4:partitions=all:me=umh:frameref=3:bframes=2:trellis=2:b_pyramid:weight_b:threads=auto
> > > -ofps 24000/1001 -vf pullup,softskip,scale=640:480 -fps 29.97 -o
> > Output.avi
> > >
> > >
> > > Thanks a lot!
> > >
> > >
> > > Regards
> > > _______________________________________________
> > > MEncoder-users mailing list
> > > MEncoder-users@mplayerhq.hu
> > >

https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
> > >
> >
> >
> >
> > --
> > Justin Randall
> > 617.733.4107
> > _______________________________________________
> > MEncoder-users mailing list
> > MEncoder-users@mplayerhq.hu
> > https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
> >
> _______________________________________________
> MEncoder-users mailing list
> MEncoder-users@mplayerhq.hu
>

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>

--
Justin Randall
617.733.4107
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