Size to small? DVD Rebuilder compressing to much?

[Socio]

First off I am a total noob!

I am trying to use DVD Rebuilder to enhance and back up a dual layer DVD which is 7.82 GB. I expecting the size to go up using some image enhancing Avisynth scripts. In fact I was preparing to have to split the DVD in to multiple parts if it got to big. Instead it appears DVD Rebuilder is trying to compress it to fit a single layer DVD and it is killing the quality.

What am I doing wrong?
It there something I need to set so it will not compress it so much and kill PQ?

[jdobbs]

DVD-RB is designed to compress the source so it can fit on a single DVD-5. If you want it to be bigger, you can modify the value of "TargetSectors=" in the [Options] area of the REBUILDER.INI file.

The default value is "TargetSectors=2236400", the value is the number of 2048 byte sectors allowed for the target size (DVD streams must fall on even 2048 byte borders). So the default target output size is 4,580,147,200 bytes (4.27GB). This is a little smaller than the 4,700,372,992 bytes (4.38GB) of a DVD+R purposely to give some leeway for possible inaccuracies in compression.

[Socio]

Thanks for the reply!

I have no such entry in my Rebuilder.ini so I will add it but instead of TargetSectors=2236400 I would use TargetSectors=4472800 for a dual layer DVD correct?

[Socio]

That does not work either, even makes it smaller, example the size of the video file on the DVD is 1,048,544kb and the same DVD rebuilder encoded version is just 258,437kb and terrible image quailty and I am using the Cinema Craft SP trial encoder to.

[powderkegz]

If you're wanting to backup a DVD-9 disc to 2 DVD-5 discs, you shouldn't be reencoding at all. Doom9 has 2 different guides to do just that - check them out, and good luck ;)

~powderkegz

[Socio]

I will try to find the other guide but I am using Avisynth scripts and filters to cleanup and sharpen image thus why I believe I need to re-encode but I am noob and could very well be wrong.

[jdobbs]

What bitrate does it say it is using and what percentage of sizing does it use? You should be able to make it work as long as the output is no more than 100% of the original.

[Socio]

I decided to break my DVD-9 in to three parts and process it that way. When I try to use DVD RB to process the smaller approx 3 gigs parts I get a pop up that says:

"Warning input directory small enough to fit on a DVD 5 no compression necessary, Continue anyway?"

It appears that DVD RB is still compressing it even though it does not need to, so how do you turn off compression.


Thanks

[Sir Didymus]

Hei, Socio,

It seems it is not clear to you that DVD-RB shouldn't be used at all when the source is smaller than a DVD+R...

Actually it is an application made for compressing...

No need to use DVD-RB if you need no compression...

SD

[jdobbs]

Originally posted by Socio
I decided to break my DVD-9 in to three parts and process it that way. When I try to use DVD RB to process the smaller approx 3 gigs parts I get a pop up that says:



It appears that DVD RB is still compressing it even though it does not need to, so how do you turn off compression.


Thanks If you have filters that have to be applied -- then you have to reencode. The compression ratio should be at or near 100% -- so it should be alright.

[Socio]

Originally posted by jdobbs
If you have filters that have to be applied -- then you have to reencode. The compression ratio should be at or near 100% -- so it should be alright.

Seems to be ok now, had a glitch in rebuilding phase probably becuase of the way I split up the DVD to test, going to play with it some more.

[Socio]

Originally posted by Sir Didymus
Hei, Socio,

It seems it is not clear to you that DVD-RB shouldn't be used at all when the source is smaller than a DVD+R...

Actually it is an application made for compressing...

No need to use DVD-RB if you need no compression...

SD

I am new to this kind of thing.

What do you use if you want to take a DVD apply some avisynth filters to sharpen & clean it up and then prep it for burning back to a DVD?

DVD RB is the easiest cheapest high quality solution I have been able to find.If there is another solution that can save me steps and time and get the same or better results I am all ears.

[TheSeeker]

No your right dvdrb IS the cheapest high quality solution to re encoding... But what isnt clear to me is WHY you are applying filters to an unencoded dvd source. Unless the movie is very old and or very noisy you shouldnt be applying any filters at all. It can very seriously deteriorate the picture quality. On the other hand there are some instances where this may be very useful. On really old or really noisy source dvd's. Just out of curiosity what dvd are you doing this to?

[Socio]

TheSeeker,

I am experimenting with Starwars Episode 1 widescreen as it does have a bit of noise. I am using Didee's IIP/Limitedsharpen combo script which does not deteriorate the picture quality just the opposite.

If you want to see a preliminary before & after shot go to this thread for my last post with pics page 9 and see what you think.

http://forum.doom9.org/showthread.php?s=&postid=572701#post572701

I am still tuning my settings in Didee's script but so far it looks pretty damn good live. I still need to burn a test to DVD so I can watch it on my big screen to really see the results though.

[TheSeeker]

I took a look at that IIP script. It looks like it COULD be pretty darn cool. But it seems its only good for clean source material, which seems to me kind of well.... less useful than it could be. I was sort of look for something like this that could be used on old, noisy movies to clean them up and sharpen them up. Look at what those masters did to the new star wars dvd's. I want whatever they used to clean up the original trilogy. It was fantastic whatever it is...

[Socio]

I would like to have the filters they used to, however even they can be improved on slightly. See this thread, the pics on first page where I was experimenting with the limitedsharpen script and on the fly dvd watching using Zoomplyer & ffdshow with avisynth and the new Empire Strikes Back.

http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=469464

[TheSeeker]

Honestly, I might see a very little difference in sharpness between the normal and processed movies.. But for ME, its not worth the 2 days of processing it would take to run a whole 2 hour movie through. Now if something like IIP could be made for really old noisy movies. THAT i would find really useful.