Reducing noise, blocking, aliasing

[gunfelix]

I'm trying to reduce as much noise, blocking and aliasing as possible from this old FLV video from the Nickelodeon website. It's badly compressed and has a lot of artifacts. I tried some filters, but it looks as if I'm worsening the artifacts instead of reducing them.

A few before and after caps:
http://screenshotcomparison.com/comparison/126095
http://screenshotcomparison.com/comparison/126096
http://screenshotcomparison.com/comparison/126097

My avisynth code:
ffVideoSource("act1.flv") #Input
Deblock_QED(quant1=33, quant2=40) #Deblocking
Cnr2() #Noise reduction
MosquitoNR(strength=26) #More noise reduction
vInverse() #Getting rid of bad IVTC
mcdaa3() #AntiAliasing
aWarpSharp2(depth=7) #Sharpening
Toon(strength=1) #Darkening

Encoding line:
x264 --profile high --level 3.1 --preset veryslow --crf 18 --tune animation --output act1out.mkv script.avs

Here are a few samples:
https://mega.co.nz/#F!7NshkLAb!DjluAGuFCGcJtEGCJxV7Eg

What am I doing wrong? Should I use different filters (EdgeCleaner/MCTemporalDenoise/LSFMod) or a different order? I would just buy the DVD but the quality is worse if you don't count the compression artifacts

[osgZach]

tried SharpAAMCMod ?

Also.. is it really wise to run a sharpening after an AA filter?

And probably a good idea to remove the full episode if you want this thread to stay open. Sample clips will do

[LemMotlow]

Seems to me that compression artifacts are the least of the problems. At a bitrate <1000 kbps, what would you expect?

The full-length sample has both duplicate and missing frames. Your best bet is to contact the genius who IVTC'd this video in the first place. As-is, I don't think there's much you can do with it except stop removing all the grain and learn to use dithering. Noise Removal And Color Banding: http://forum.doom9.org/showpost.php?p=1386418&postcount=2 and http://forum.doom9.org/showpost.php?p=1386559&postcount=3.

[gunfelix]

Thanks for your replies

tried SharpAAMCMod ?

Also.. is it really wise to run a sharpening after an AA filter?

And probably a good idea to remove the full episode if you want this thread to stay open. Sample clips will do

SharpAAMCMod did a better job.
I thought it looked better if I put the sharpening near the end, but I'm not a filter/video/avisynth expert so yell at me as much as you like :rolleyes:


Seems to me that compression artifacts are the least of the problems. At a bitrate <1000 kbps, what would you expect?

The full-length sample has both duplicate and missing frames. Your best bet is to contact the genius who IVTC'd this video in the first place. As-is, I don't think there's much you can do with it except stop removing all the grain and learn to use dithering. Noise Removal And Color Banding: http://forum.doom9.org/showpost.php?p=1386418&postcount=2 and http://forum.doom9.org/showpost.php?p=1386559&postcount=3.

I got this from TurboNick (file is encoded in 2008), so I doubt those people are still employed or are willing to share the broadcast masters. I do have some localized PAL versions (480p25), but some of them contain ghosting. If fixing the old FLV won't work, I'll upload those.

Thanks for the links, I'll play around with that and see where it gets me.

[Mounir]

Have a look here: Restoring low-quality Youtube/similar videos (http://forum.doom9.org/showthread.php?t=134078)