Getting poor colour quality reproduction with DVD shrink.

[Z.Sath]

Just got myself a DVD writer and trying to back up a few of my cartoon DVDs.

The thing is that the colour seems sort of washed out, reds and blues seem to glow, and some other colours spill out over the lines.

Is there anything I can do to improve it, or would another DVD copier do a better job?

Also, could give me the technical terms of the problems I am having, so I can do a little more effective searching (glowing reds, spilling colours etc.)?

Many thanks in advance.

Paul.

[BJ_M]

dvd shrink doesnt really touch the colors ...

sounds almost like IRE isnt being clamped or the range is being extended ...

and the original looks ok ?

[Shocker Milwaukee]

How much compression was applied?
Are the source discs originals, or home-made caps?

[BJ_M]

yea -- really high compression may do that ...

[Z.Sath]

Hi guys,

Trying to back up original store-bought DVDs (Ren & Stimpy Seasons 1 & 2 to be precise) - Picture of originals is excellent quality.

Backup was after a deep scan - 64% compression.

Cheers

Paul.

[Gurm]

Oh bloody heck that's a lot of compression.

It happens on animation - you get a lot of color wash when the compression goes high. I recommend either splitting the discs up or using DVD Rebuilder or something.

[Darth Paris]

I had a little of this with the Family Guy DVD's. Make sure you uncheck any unwanted audio tracks.

[Jah_Rankin]

What version of Shrink are you using? I find this to be a problem with the latest version of shrink, even if no compression is need as well. I referenced this problem in another thread somtime back and got hammered by the Shrink luvers.

[budz]

I referenced this problem in another thread somtime back and got hammered by the Shrink luvers.

[Jah_Rankin]

budz

[glockjs]

yeah 3.1.7 had issues. get 3.2 and try different AEC options i.e. sharp, smooth

[Jah_Rankin]

yeah 3.1.7 had issues. get 3.2 and try different AEC options i.e. sharp, smooth

Excuse me, this a problem version also

[Gurm]

Jah_Rankin, you are either insane or high.

You claim that DVD Shrink 3.2 mangles colors even when no compression is needed, when a binary comparison of the extracted MPEG data shows that it doesn't do ANYTHING to that data.

Please give up this unholy crusade to reproduce something which you only see in your fevered visions.

I'm not picking on you beyond what you deserve, so please don't go getting all offended here - but you were pretty much put in your place in that other thread. Don't start it again.

[skebenin]

@Z.Sath, too bad, but I think your thread has been hijacked by someone with a personal vendetta.

This has been discussed before (as you've probably realized) and there hasn't been any empirical evidence that Shrink introduces significant color changes. There has however been some pretty compelling evidence showing that it doesn't.

I think it's most likely that the color saturation and bleeding issues you mention are on the original DVD. Cartoons are notorious for having intense color. If that is not the case, you need to isolate a frame from both the original and the copy where you're seeing the color issue and compare them side by side on your PC.

If you see a difference, then people here will have something to work with.

If you don't see a difference, then you've identified that the problem is somewhere else, possibly your player (maybe it doesn't like having macrovision protection shut off).

[Jah_Rankin]

Jah_Rankin, you are either insane or high.

You claim that DVD Shrink 3.2 mangles colors even when no compression is needed, when a binary comparison of the extracted MPEG data shows that it doesn't do ANYTHING to that data.

Please give up this unholy crusade to reproduce something which you only see in your fevered visions.

I'm not picking on you beyond what you deserve, so please don't go getting all offended here - but you were pretty much put in your place in that other thread. Don't start it again.

I'm not the only 1 that see the bull shit effects in Some versions of shrink, however I'm the only one that seems to get hammered, All of u against me can kiss my u know what.

[jimmalenko]

You claim that DVD Shrink 3.2 mangles colors even when no compression is needed, when a binary comparison of the extracted MPEG data shows that it doesn't do ANYTHING to that data.

A binary comparison is pretty conclusive in my book.

Jah_Rankin, are you still using DVDShrink despite it's issues or have you found other software that can do the job you require ?

[lordsmurf]

I think it's in your mind. The way it works does not really touch color (not possible). I've shrunk at 55% before (many many times), and see no such thing. With a compressed-domain transcoder, you worry about IPB degeneration and compression blocks. Not colors, interlace, etc.

[Faustus]

Gotta go with the bluedude on this one. It shouldn't touch the colors.

Now if its blocked to hell and back it might make things look weird (colors not quite where they are 100% suppose to be) but other then that I'm not sure what it would be doing to jack up colors.

[Cobra]

I have frequently compressed films to 65%, and they look just fine. No colour change, little more blurring than the original, very little in the way of extra macroblocking either. I use Deep Analysis and set AEC on maximum smoothness. Just about everyone else who uses DVD Shrink obtains these results too.

Z.Sath, any chance of a couple of screenshots or sample clips so we can see for ourselves? I will host them for you if you don't have your own webspace.

Regards,

Cobra

[Gurm]

No no let's back up.

In cartoons, I have personally witnessed some EDGE bleeding. Not different colors, not color mangling, but some edge bleeding/blurring on intense colored scenes, be they cartoon or otherwise.

I think it's just an artifact of high compression rates.

It's DIFFERENT from the "look all the colors get screwed up when I run a disc through shrink" complaint.