dvdshrink 2.1beta 10 levels of compression

[mrbass]

took a look really quick and so far that's the only difference I could tell. Instead of 8 levels of compression it has 10 levels except that the compression ratio is much smaller like 5%, 10%, 15%, 20%, etc. So this could be awesome. Anyone have the cajones to figure out what sort of algorithms it's now using.
You can download it from http://www.dvdshrink.org

[m1482]

@mrbass:

Even when this new version have more levels of compression, level 10 compress LESS than level 8 in previous version 2.0. This is not good if you need to compress the extras more to allowed more space for the main movie!!!

[neopholus]

I think, that depends on the DVD... I tries MIB (main movie only), and there is no great difference:

Level 10 (DVDShrink 2.1Beta): 50%
Level 8 (DVDShrink 2.0) : 54%

And, in my opinion, if you select Level 8 (old) or Level 10 (new) for some extras, you can as well compress using "Still Pictures", because it won't be a great pleasure to view the extras anyway. And still pictures compresses 85% in both version. So much more space for the main movie ;-)

Cheers,

Neopholus

[neopholus]

Read here (http://forum.digital-digest.com/showthread.php?threadid=21230) for some infos to the new compression method. Here the post from DVDShrink:

DVD Shrink 2.1 uses a completely different compression algorithm which is not comparable to 2.0.

It dynamically determines which picture types to modify depending on the compression required, and it does this for each and every picture in the movie. It supports "partial" reduction, where only a small number of blocks in each picture are reduced, and it attempts to distribute the resulting compression uniformly among all pictures, in such a way that the error introduced by this compression does not "propagate" or amplify as playback continues.

I'm pleased with the results so far, but please try it yourself and give me some feedback

[mrbass]

I still don't get it sometimes. You guys are talking about levels 8 and 10..that's just nuts. With trancoders you want the best quality possible so (IMHO) the only way to do that is strip all audio but one or two streams and Re-Author for main movie only.

With dvdshrink 1.02 and 1.03 I never would do higher than level 2 because level 3 looked unacceptable to me. Dvdshrink made another post concerning 2.0 compression levels and based on what he said I still wouldn't exceed level 2.

dvdshrink 2.1beta is a whole new ball game and I did enemy at the gates on level 3 (15%) and I have to say I'm pretty impressed. I was flipping through frame by frame in PowerDVD and it was sure hard to find differences although you could see if you looked hard enough but they were very subtle.

Gonna have to burn it and look at it on the TV but I think this is a huge boon and what people have been clamoring for awhile with dvdshrink. That is fine control over compression % to more easily hit the target 4.37GB size.

[neopholus]

Cool down, mrbass.... I agree with your opinion, that level 8 or level 10 are more or less useless. I just said, that I do not see any use in a higher compression, because then you can use slideshow anyway... that's only true if you want to keep menus and some extras, of course. If you are only interested in the movie, reauthoring with one or two audio streams is the solution...

Mmm, is my english really so bad?

Cheers,

Neopholus

[mrbass]

I didn't mean to come across sounding harsh..sorry. No need to cool down as I never was even warm :-)

I cross posted this on that link neopholus gave...at least it's on a different forum though. Here's my 2.1 beta screenshots using Level 3 15%. http://www.mrbass.org/dvdshrink/dvdshrinklevel3.html

[TifKag]

I went up to level 7, and the quality is better than with 2.0 level 3
imho

[thop]

you cannot compare the levels between the different version, if anything you can only compare the different versions by using the %.

[TifKag]

2.0 Level 3 = 34%
2.1 Level 7 = 35%