Restoring low-quality Youtube/similar videos

[Dark Shikari]

I was looking at this older thread and decided to try a slight modification of his script on some low quality Youtube and Nicovideo sources that I wanted to restore.

After and Before, respectively:



Script:

Deblock()
dfttest()
FastLineDarken()
deen("a3d",4,8,9)
Spline36Resize(last.width*2,last.height*2)
AddBorders(4, 0, 4, 0)
aWarpSharp(depth=12,blurlevel=4,thresh=0.2,cm=1)
FastLineDarken()
aWarpSharp(depth=6,blurlevel=4,thresh=0.7,cm=1)
Crop(4,0,-4,0)
FastLineDarken()
DeHalo_Alpha()
fft3dgpu(bt=3,sigma=8,sharpen=1.3)
Spline36Resize(last.width/2,last.height/2)

This script is surprisingly effective It even works on blocky gradients, strangely enough, even though the original author designed it for cartoons.

[Ranguvar]

That is DISTURBINGLY good quality.

*runs away to use the script for his own nefarious purposes*

Thanks, O Mighty One!

[Ranguvar]

Heh? Won't encode.

MeGUI reports that there is an expected comma or end parentheses at the end quotes in "a3d" in the deen() line.

[Dark Shikari]

Originally Posted by Ranguvar

Heh? Won't encode.

MeGUI reports that there is an expected comma or end parentheses at the end quotes in "a3d" in the deen() line.

Do you have all the necessary plugins and scripts (and latest versions thereof)? See the linked thread for links to all of these.

[Ranguvar]

Just ignore this please >.<

[scharfis_brain]

I restored a lot of youtube clips as well for a students video project.
I needed to upsample them to PAL 50i.

Source: http://www.youtube.com/watch?v=eN85MDSYiv4
Filtered: http://rapidshare.com/files/86115836..._kaza.mpg.html


But the script is REALLY bruteforce:

loadplugin("c:\x\dgdecode.dll")
loadplugin("c:\x\mvtools.dll")
loadplugin("c:\x\ttempsmooth.dll")
loadplugin("c:\x\nnedi.dll")

#load A&V
v=avisource("get_video.avi")
a=wavsource("get video.wav")
audiodub(v,a)

#correct video to true fps
assumefps(30,true)
resampleaudio(48000).getchannel(1,1)

#deblock/dering
s=DeBlock(quant=35).Blindpp(cpu2="ooooxx")

# very strong temporal denoising (stabilisation)
bv2 = s.MVAnalyse(isb = true, truemotion=true, delta = 2, idx = 10, blksize=16)
bv1 = s.MVAnalyse(isb = true, truemotion=true, delta = 1, idx = 10, blksize=16)
fv1 = s.MVAnalyse(isb = false, truemotion=true, delta = 1, idx = 10, blksize=16)
fv2 = s.MVAnalyse(isb = false, truemotion=true, delta = 2, idx = 10, blksize=16)
fc2 = s.MVFlow(fv2, idx=10, thSCD1=500)
fc1 = s.MVFlow(fv1, idx=10, thSCD1=500)
bc1 = s.MVFlow(bv1, idx=10, thSCD1=500)
bc2 = s.MVFlow(bv2, idx=10, thSCD1=500)
interleave(fc2, fc1, s, bc1, bc2) 
ttempsmooth(maxr=2, lthresh=40, cthresh=50)
selectevery(5,2)

#decimate out duped frames
selectevery(6,1,2,3,4,5)

#upscale to double size 
source=nnedi(dh=true,field=0).turnleft().nnedi(dh=true,field=0).turnright().sharpen(0.5)

#interpolate to 50fps for fluent motion
backward_vec = source.MVAnalyse(isb = true, truemotion=true, pel=2, idx=1,blksize=8)
forward_vec = source.MVAnalyse(isb = false, truemotion=true, pel=2, idx=1,blksize=8)
cropped = source.crop(4,4,-4,-4) # by half of block size 8
backward_vec2 = cropped.MVAnalyse(isb = true, truemotion=true, pel=2, idx=2,blksize=8)
forward_vec2 = cropped.MVAnalyse(isb = false, truemotion=true, pel=2, idx=2,blksize=8)
source.MVFlowFps2(backward_vec,forward_vec,backward_vec2,forward_vec2,num=50,idx=1,idx2=2) 
bicubicresize(720,576) #resize to PAL
converttoyuy2()
assumebff() #for PAL-DV
separatefields().selectevery(4,0,3).weave() #reinterlace

EDIT: I played a bit around with MvTools and made this nice 5x slowmotion of it:
http://www.youtube.com/watch?v=2Dag6BTFB2s

[Sagekilla]

I use a similar script whenever I'm working with animated video. As you can see, it's not perfect but it does remarkably well.

Input


Output

[Ranguvar]

Pretty cool stuff, Sagekilla. You hvae that script hiding anywhere? Still learning ways to spruce up anime

[Sagekilla]

Come to think of it, that sounds EXACTLY like what my filter is doing. Was my filter chain the one you based yours off of?

toon(0.15)
Deblock(quant=33, bOffset=14)
dfttest()



AAA(Chroma=true)
Spline36Resize(1536,864)

aWarpSharp(depth=12,blurlevel=4,thresh=0.3,cm=1)
LimitedSharpenFaster(edgemode=1,strength=200)
deen("a2d",3,6,6)
Dehalo_alpha()

Spline36Resize(1024,576)

[Ranguvar]

Green screen problem... got the script working, but VirtualDubMod and MPC play it all greenish.

[Sagekilla]

Whose script is that bugging out on?

[Ranguvar]

*points at DS*
Slightly modified for my purposes.

LoadPlugin("C:\Anime\WarpSharp\warpsharp.dll")
AviSource("MD_01.avi", audio=false)
Deblock()
dfttest()
FastLineDarken()
deen("a3d",4,8,9)
Spline36Resize(last.width*2,last.height*2)
AddBorders(4, 0, 4, 0)
aWarpSharp(depth=12,blurlevel=4,thresh=0.2,cm=1)
FastLineDarken()
aWarpSharp(depth=6,blurlevel=4,thresh=0.7,cm=1)
Crop(14,10,-14,-10)
FastLineDarken()
DeHalo_Alpha()
fft3dgpu(bt=3,sigma=8,sharpen=1.3)
Spline36Resize(640,480)
Tweak(sat=1.1, bright=0.0, cont=1.1)
TextSub("MD_01.ass")
Dup(threshold=4)

[Sagekilla]

It seems like the problem is related to dfttest(). By sheer random luck, I was testing dfttest() as a replacement for one of the denoisers in my script and found it to produce odd output. It output an overtly green image, as you said.

Don't know why, but it did.

[Dark Shikari]

Originally Posted by Sagekilla

It seems like the problem is related to dfttest(). By sheer random luck, I was testing dfttest() as a replacement for one of the denoisers in my script and found it to produce odd output. It output an overtly green image, as you said.

Don't know why, but it did.

Well I've found dfttest to be an important part of that script--its effect is astounding.

Check that you have the latest fft3w library?

[Sagekilla]

Originally Posted by Dark Shikari

Well I've found dfttest to be an important part of that script--its effect is astounding.

Check that you have the latest fft3w library?

Indeed, I tried dfttest alone on that clip and it's effects were amazing. But when I used either your filter chain or mine with dfttest instead of the first deen call, I got green screens. Annoyingly enough, I have the fft3w library from FFT3Dfilter and I get this effect with our filter chains.

[Dark Shikari]

Originally Posted by Sagekilla

Indeed, I tried dfttest alone on that clip and it's effects were amazing. But when I used either your filter chain or mine with dfttest instead of the first deen call, I got green screens.

Video dimensions?

[Sagekilla]

Originally Posted by Dark Shikari

Video dimensions?

That could probably be it. My source input is 720x416 though, mod 16. Unless it requires mod 32?

Edit: That makes no sense, I called this before I did any changes to the dimensions and it gave me a green tinted screen. When I used it standalone, I got the normal (and amazing at that) effects.

[Ranguvar]

I have a 640x480 video, and am using 3.1.2 of fftw.

Swapped out fft3dgpu for fft3dfilter, because it sped things up a good deal. Still green screens. And other color weirdness.

[Ranguvar]

Update. At least on my end, FastLineDarken() is causing the green-screens. I can comment out only the FLDs and it will work. Even one FLD seems to bork it.

The interesting thing is, depending on which FLD I don't comment out, different things happen. Leaving in the last FLD only will cause green screens everywhere. Leaving in the second only causes weird bubbles of color in the first few frames after you seek somewhere new in MPC. Leaving in the first one only causes the color bubbling for a frame or two, then permanent green screens.

[Sagekilla]

Oops, yeah it's FastLineDarken that causes the problem.. Not dfttest. I got the names mixed up when I posted, sorry! Swapped out deen and removegrain for dfttest on my first filter call. Much better results and I think it's slightly faster.