SilaSurfer
19th August 2011, 18:32
Hello.
After quite some time I'm backing up the Lord of the Rings Trilogy EE version DVDs and I need some help with filtering - denoising with Mdegrain which has become my preferred choice as a denoiser for about any backup that I do. But I'm no expert nor novice when It comes down to Mdegrain. Lotr movies are pretty clean but have some noise-grain in flat areas which I believe comes from dithering used since underneath that baby grain (like Didée likes to call it) clearly banding can be seen when a denoiser is used (this can be seen in a sample that I uploaded). I tried Mdegrain2 with a prefiltering stage like this
o=last
spatial=minblur(1)
temporal = spatial.FluxsmoothT(7)
mixed = temporal.merge(spatial,0.251)
pred=mixed.sbr()
srch=pred.Msuper(pel=2,sharp=2)
super=o.Msuper(pel=2,sharp=2,levels=1)
bv2=srch.Manalyse(isb=true,delta=2,overlap=4,truemotion=false)
bv1=srch.Manalyse(isb=true,delta=1,overlap=4,truemotion=false)
fv1=srch.Manalyse(isb=false,delta=1,overlap=4,truemotion=false)
fv2=srch.Manalyse(isb=false,delta=2,overlap=4,truemotion=false)
o.Mdegrain2(super,bv1,fv1,bv2,fv2,thsad=300)
and it cuts grain completely down except in some areas like this one:
Sample Lotr: Fellowship of the Rings ~14 MB demuxed.
http://www.megaupload.com/?d=WKP2UEPQ
Note: The Mdegrain stage that was posted is not actually tweaked yet but even with those thsad values some of the grain keeps coming back, even after the prefiltering stage where there is no sign of grain at all. There must be something in this sample scene which makes ME of Mdegrain to detect grain as something that it shouldn't.
The goal is to ged rid of all grain, so after I can re-dither these sources with Ordered dithering from cretindesalpes Dither tools.
I would very much like to hear your suggestions from you guys out there. Thank you in advance.
After quite some time I'm backing up the Lord of the Rings Trilogy EE version DVDs and I need some help with filtering - denoising with Mdegrain which has become my preferred choice as a denoiser for about any backup that I do. But I'm no expert nor novice when It comes down to Mdegrain. Lotr movies are pretty clean but have some noise-grain in flat areas which I believe comes from dithering used since underneath that baby grain (like Didée likes to call it) clearly banding can be seen when a denoiser is used (this can be seen in a sample that I uploaded). I tried Mdegrain2 with a prefiltering stage like this
o=last
spatial=minblur(1)
temporal = spatial.FluxsmoothT(7)
mixed = temporal.merge(spatial,0.251)
pred=mixed.sbr()
srch=pred.Msuper(pel=2,sharp=2)
super=o.Msuper(pel=2,sharp=2,levels=1)
bv2=srch.Manalyse(isb=true,delta=2,overlap=4,truemotion=false)
bv1=srch.Manalyse(isb=true,delta=1,overlap=4,truemotion=false)
fv1=srch.Manalyse(isb=false,delta=1,overlap=4,truemotion=false)
fv2=srch.Manalyse(isb=false,delta=2,overlap=4,truemotion=false)
o.Mdegrain2(super,bv1,fv1,bv2,fv2,thsad=300)
and it cuts grain completely down except in some areas like this one:
Sample Lotr: Fellowship of the Rings ~14 MB demuxed.
http://www.megaupload.com/?d=WKP2UEPQ
Note: The Mdegrain stage that was posted is not actually tweaked yet but even with those thsad values some of the grain keeps coming back, even after the prefiltering stage where there is no sign of grain at all. There must be something in this sample scene which makes ME of Mdegrain to detect grain as something that it shouldn't.
The goal is to ged rid of all grain, so after I can re-dither these sources with Ordered dithering from cretindesalpes Dither tools.
I would very much like to hear your suggestions from you guys out there. Thank you in advance.