Beginners Guide To Ripping With Gordian Knot

Slayer

I know how to mount an image, but not how to create one. Which program would I need?

fuEgo

You can make a ISO with DVD-Decrypter and then mount with DAEMON Tool.

Slayer

Tried, but same problem: at exactly thre same spot, DVD Decrypter stops working and gives me an error.

Even with "Ignore read errors" (yes I finally found it) checked, it can't rip this disc.

elchupacabra

Back in Windows I used to work with ImgBurn. It was created by the same guy who developed DVDDecrypter.

Slayer

I'll check it out as a last resort. Thanks for all your tips.

spudthedestroyer

Your disc is broken, powerdvd is just skipping the sectors. What you need to do is copy skipping CRC checks and there are programs that can do this, but ultimately your vobs are damaged as it won't know what the content should be. So its corrupted.

Moral of the story is, take better care of your discs

Slayer

Heh, it was a second hand one when I bought it and the damage was already done.

RedVeil

In my current project I encountered a source, which shows heavy halo effects. See here:

I found the Didée Dehalo script, but it doesn't work too well, because it only removes the white parts of the effect and the darker edges remain.
The DeHalo_alpha() script helps, but it still isn't perfect. See here:

So my question is: is there any other way to remove the halo effect? Or do I have to live with the result of DeHalo_alpha()?

Another question that just crossed my mind: Can I get rid of those ugly horizontal lines in the image? They are permantently present. I would rather not post a sample, because I have already applied several filters to get the result from above. :roll:

elguaxo

Dehalo_Alpha has 7 parameters. Try them, they have a hughe impact on how the filter works on a particular source. Another dehalo script is BlindDeHalo3: http://forum.doom9.org/showpost.php?p=6 ... stcount=70 / updated MT2 version: http://forum.doom9.org/showthread.php?p ... post803275

You also have strong chroma noise. FFT3D might be a good start for the chroma noise and the horizontal lines. And take a look at script combos like MCTemporalDenoise: http://forum.doom9.org/showthread.php?t=139766

RedVeil

Thanks! What do you think about the current result:

I also had a look at this: http://www.doom9.org/index.html?/captur ... facts.html
There seems to be some of that yellow chroma noise in the face of the person.
Especially around the mouth. I tried ChromaShift, but I doesn't seem to need that.

My current AviSynth script is:

Code:

#  INTERPOLATION
interp = nnedi(field=1)
tdeint(order=1, field=1, type=1, edeint=interp, emask=TMM(order=1,field=1))
 
#  CROPPING
crop(16,0,696,472)
 
#  RESIZING
Spline36Resize(608,464)
 
#  CHROMA NOISE REMOVAL
Cnr2()
 
fft3dfilter(sigma=3, bt=5, bw=32, bh=32, ow=16, oh=16)
MCTemporalDenoise(settings="high",chroma=true,stabilize=true,GPU=false)
LimitedSharpenFaster(ss_x=1.25,ss_y=1.25,Smode=4,strength=150,soft=30)
DeHalo_alpha(rx=2.5, ry=2.5, ss=1.0)
BlindDeHalo3(rx=1.5, ry=1.5, strength=100, PPmode=1)

So you see that I use both DeHalo scripts, from which I get the best result with this combination.

Any more suggestions how I could improve the picture?

junkboy

RedVeil wrote:

There seems to be some of that yellow chroma noise in the face of the person.
Especially around the mouth. I tried ChromaShift, but I doesn't seem to need that.

Did you try Tweak? > http://avisynth.org/mediawiki/Tweak

RedVeil

Thanks, I managed to reduce the saturation of the yellow colors and shifted the colorspace (hue) a little bit towards red. Result:

What do you think about it?

junkboy

Yeah, looks better, and she looks a lot hotter now she ain't got a yellow beard

junkboy

The source is probably a bit too clean for mc_spuds, but does anyone know what's causing this?

With mc_spuds(frames=2,strength=2)

Original...

The only other calls in the script are nnedi/TFM/TDecimate/crop+resize and mc_spuds is the last to be called.

elchupacabra

You could try to remove the filters one by one to see which one causes it and then play around with the parameters of that filter.

junkboy

Cheers elchupacabra, I shoulda read through the doom9 thread again though (musta missed it first time round :oops:

), because elguaxo looks to have had a similar chroma problem. I'm running an encode right now though, so I'll have to wait till I can tweak them there settings.

fuEgo

Cut the scene out and experiment on that, it'll be quicker.

elguaxo

junkboy wrote:

elguaxo looks to have had a similar chroma problem

the problem is not MC_Spuds, but MVTools at some settings. For the kind of prefiltering done by MC_Spuds the defaults for thsad, thscd1 and thscd2 are just too high. I wrote my own defaults wich worked fine on all the movies I tried, but I finally switched to MCTemporalDenoise. MCTemporalDenoise gives you similar results and is faster.

junkboy

@fuEgo; Yeah, I would normally do that (the screens above are from a 60 second clip), but I'm encoding a different movie right now.

@elguaxo; Cheers for the info

I've not tried MCTemporalDenoise yet, but I'll definately be trying it out if it does a similar job and even more so if it's faster

elchupacabra

MCTemporalDenoise and the word fast in one sentence is a bit gritty.

Beginners Guide To Ripping With Gordian Knot

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