Star Wars Laserdisc Preservations. See 1st Post for Updates. — Page 3

g-force said:

my 2 cents... the noise reduction looks like ass, as all noise reduction does, but this one looks particularly bad (smearing, warping...).

On the other hand, the SD version is one of the most beautiful captures I've ever seen. I had to demux though, as I couldn't figure out how to play the second stream otherwise. For some reason it plays back with interlacing artifacts though, is it still interlaced?

May I suggest an in-between version with no noise reduction but IVTC'd?

anyway, you've set the bar pretty high on video caps. Nice work!

 

Are you referring to both releases or just SW?  I tried to avoid that as much as possible in ESB because it was a bit much in SW.  I used QTGMC in the SW release and I believe that is where the problem arose.  For ESB I used only a spatial denoiser.

I can imagine that when you demuxed it to an elementary stream it lost information like aspect ratio and FPS and then when you muxed it the program probably assumed 29.97fps or maybe performed a pulldown.  It happened to me when I was trying to mux this to blu-ray. Could you tell me which scene is exhibiting interlacing? It is possible that I missed a cadence change somewhere.  I know the title card looks a bit weird when it recedes into the starfield but I thought it was just part of the mastering or something. Other than that I am nearly positive that the frames are progressive as they should be.

When I watch it on the PC I use VLC and right-click while it's playing, then click on Video-->Video Track and then you can choose to display the 480p stream.

penguinofgreatness said:

Can anyone post screencaps of these? It seems pretty interesting.

There are some you can check out over here.

I have only seen your ANH but I agree with g-force, definitely try to reduce the noise reduction, there's alot of smearing and other artifacting present.

As already been said, your unprocessed stream is a superb capture, a very fine job althor! Definitely the best SC I've seen yet, noticed some clipped whites in some instances but then I'm being very nitpicky, that could also just be a case of different luma between pressnings. Great job! :)

Will be very interesting to see how your fine gear treat the somewhat problematic Technidisc LD (althor has offered to help cap it for me :)

I kind of expected that some people would not like the denoised 720p stream.  I will definitely take your ideas into account in the future.  I'll probably still apply some denoising to the 720p stream in ROTJ though.  There is always the untouched 480p for people that want a "pure" transfer.  I'd like to hear some methods for doing this without introducing an unwanted amount of artifacting.

I am excited to see what the Technidisc is going to look like.  I hope I don't have to capture it 5 times like the last guy!

althor1138 said:

I kind of expected that some people would not like the denoised 720p stream.  I will definitely take your ideas into account in the future.  I'll probably still apply some denoising to the 720p stream in ROTJ though.  There is always the untouched 480p for people that want a "pure" transfer.  I'd like to hear some methods for doing this without introducing an unwanted amount of artifacting.

I am excited to see what the Technidisc is going to look like.  I hope I don't have to capture it 5 times like the last guy!

 

Yes, I totally understand the purpose of the denoised version, that's why it is so great of you providing a choice, and your denoising might also look alot better on ESB as you hinted at.

Not sure how the crosstalk-mastering defect works, if we're lucky your player will handle it better and you'll be fine with one single capture, with your fine combfilter/capture-chain it may perhaps be enough. Looking forward to check out your ESB, thanks again for sharing! :)

That is correct. I never tried to demux the file.  I just encoded it and set the frame rate at 24fps and never stopped to think that the encoder would do something like this to me :(.  It seems that I had blu-ray checked as target playback device when I encoded and this seems to have (once again) applied pulldown on my behalf in the background.

I'm sorry I didn't check that before releasing it. Should I fix it and re-release the file? If that is the case I could just redo everything and take everybody's advice on the NR and try to improve the 720p stream as well.

I believe I should pull them from the spleen then and try to set this right before moving forward.  Terribly frustrating. :( I guess the good news is that the NR issue can be better dealt with the second time around.

Can I get some feedback on these 2 denoised clips?

Link1

Link2

Thanks!  I'm glad you spoke up about all of the issues that you noticed or some of it might have gone unnoticed for awhile.

Separate MKV's could be good imo.

EDIT: BTW, that second clip is resized and has the wrong aspect ratio but I guess you can still judge the denoising.  It's pretty late here I should go to bed now lol.

g-force said:

msycamore said:

 

Will be very interesting to see how your fine gear treat the somewhat problematic Technidisc LD (althor has offered to help cap it for me :)

How exciting!

-G

Yes, indeed. Your fine derainbowing won't go to waste though, will upload a fixed version before so I feel better deleting this capture.

Ouch, sorry to hear there is problems with your uploaded mkvs :( good it was spotted when you still worked on it though.

Damn, I can't check the samples due to my damn internet connection being down.:( personally I don't mind the noise in these, they are what they are... old letterbox transfers, but I can also see why some would like it denoised when watching on a modern screen so...

source=Avisource()

##separate channels and adjust levels
red=source.converttorgb32().showred("yv12")#.levels(8,1,255,0,255)
green=source.converttorgb32().showgreen("yv12")#.levels(7,1,255,0,255)
blue=source.converttorgb32().showblue("yv12")#.levels(14,1,255,0,255)

##temporal denoise (used as an auxiliary clip for the spatial denoiser)
vectors=red.MVAnalyseMulti(refframes=5, pel=2, blksize=16, blksizev=16, overlap=8, idx=1,chroma=false)
auxred=red.MVDegrainMulti(vectors, thSAD=400, SadMode=1, idx=2,plane=0)
auxgreen=green.MVDegrainMulti(vectors, thSAD=400, SadMode=1, idx=2,plane=0)
auxblue=blue.MVDegrainMulti(vectors, thSAD=400, SadMode=1, idx=2,plane=0)

##spatial denoise of separate channels
redvd=red.vaguedenoiser(0,interlaced=false,wiener=true,auxclip=auxred,chromat=-1)
greenvd=green.vaguedenoiser(0,interlaced=false,wiener=true,auxclip=auxgreen,chromat=-1)
bluevd=blue.vaguedenoiser(0,interlaced=false,wiener=true,auxclip=auxblue,chromat=-1)

##fft3d for noise in dark areas
redfft=redvd.fft3dfilter(sigma=.5,sigma2=1,sigma3=3,sigma4=8,plane=0,sharpen=0,bt=2,degrid=2)
greenfft=greenvd.fft3dfilter(sigma=.5,sigma2=1,sigma3=3,sigma4=8,plane=0,sharpen=0,bt=2,degrid=2)
bluefft=bluevd.fft3dfilter(sigma=2,sigma2=3,sigma3=5,sigma4=8,plane=0,sharpen=0,bt=5,degrid=2)

##mix channels and adjust levels if needed
mix=mergergb(redfft,greenfft,bluefft,"rgb32").levels(16,1,255,0,235).converttoyv12()
#sc=stackhorizontal(source.converttoyv12(),mix.histogram())
return(mix)

Here is the script I used to denoise the 2 test clips.  I have never used RGB before. Is there a better way? I guess I'm bothering because most people nowadays don't like noise in the picture. Is there some recommended settings that anybody can offer me that would unoffensively reduce noise?

Normally I never use rgb but I thought I'd try something different since the denoising in yuy2 or yv12 was introducing all kinds of weirdness.

Yeah it's  the same it seems.  I think you could even use it to stretch out the histograms for each individual channel and do some basic color correction before you start to denoise. I probably read that post awhile ago and kept the idea in my head. I'm sure I'm not the first person to try and denoise in rgb colorspace so hopefully I can get some tips.

Okay the 480p raw stream is encoded with the same settings minus the blu-ray compatibility option.  It is more than 1gb smaller.  I remember Chewtobacca saying how he thought the encode was quite big at nearly 4.5gb and now I guess we know why that was.  It's now about 3.3gb and when I demux the stream it comes out at 24fps instead of 30fps.

I believe I also found the reason why some of the whites were getting clipped.  Mysycamore commented on this.  I'd have never noticed it otherwise. The 480p stream that I originally released was essentially the raw capture encoded to x264 but I did apply a levels tweak which I thought would not clip anything.  However, coring was by default set to true which automatically clips stuff when you use it(I think).  This time I have not adjusted anything whatsoever.  It's just been IVTC'ed and a couple wonky frames have been fixed but other than that it's untouched.  It looks a bit washed out because of this but is easily fixable with a few tweaks.  I plan on releasing it completely untouched this time however.

I feel like such a noob sometimes lol.