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use the whole blank dvd disk

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angdy 
Newbie

15 Oct 2003 12:02 AM
hi
i would like to know why dvd x copy platinum
does not use the whole disk to have better quality. just say when i copy a movie with a 7 gig movie into a 4.7 gig blank disk. it compress 20%, but after recording, it only use up 2.8 gig of the disk, but if it use the whole 4.7 gig of the disk, would the movie quality be better?
on dvd x copy xpress, it use up much space as possible when i record movie only, the quality of the movie is alot better.
Kickback 
Junior Member

15 Oct 2003 6:45 AM
Hmmm interesting observation. I happen to notice the same thing. And even after I used the advance mode and went ahead an tried to increment the compression it still didn't fill up the disk.

Is it in the works?
cpto 
Newbie

20 Oct 2003 6:17 PM
I've noticed that with Field of Dreams - the movie took up about 2.3G and it's less than 2 hours long. I also didn't have the option to change the compression.

For some reason it seems that Platinum wants to use maximum compression for movies that should fit without any compression.

I would think that if compression were needed the default would be the MINIMUM required to fit a movie on the disk. Instant Copy, as far as I can tell, appears to work that way.
Rick Connolly
DonBean 
Inactive

23 Oct 2003 7:41 AM
I too have noticed this also...While 'Dirty Harry' does use the entire dvd+ when compressed (23%)....'The Outlaw Josey Wales' when compressed to about the same number, leaves a small space on the dvd+....The least amount of compression is allways better and using the entire dvd will help.....
Conrad 
Inactive

23 Oct 2003 8:01 PM
Gentleman,

The next release should address the over-compression issue.

It may be released as early as this coming Monday.


Rag Tag Dual-Dozen
Kickback 
Junior Member

24 Oct 2003 1:41 AM
it's actually an under-compression issue.

We want to compress the least amount if posible in order to keep the quality at it's highest.
cpto 
Newbie

24 Oct 2003 11:48 PM
No, it's an overcompression problem. Field of dreams should have fit with 0% compression since it's under two hours. However, the filesize was 2.4G after platinum was through with it. It compressed to movie to about 50% it's original size.

That's overcompression.
Kickback 
Junior Member

25 Oct 2003 12:55 AM
oh ok.

Thanks for explaining it that way.
dengar 
Senior Member

25 Oct 2003 1:09 AM
cpto
FYI, movie length has nothing to do with the size of the titleset.

Just because a movie is less than two hours in length has no bearing if it will fit on one disc or not.

When discussing overcompression this is what we are referring to:

Earlier versions of XPRESS used to compress movies to 4.36 GB.

Later versions used less of the disc. They would compress the movie to 4.12 GB.

What we are seeing now is that DXCX and DXCP are compressing movies too much.

The final file sizes are between 2.3 GB and 3.5 GB. That is TOO much compression. The compression logic has gone haywire.

We are also seeing unnecessary compression. For instance, if the titleset size is 4 GB, both DXCX and Platinum should burn it with no compression. However, we are seeing that both versions are compressing, whether the titleset needs it or not.
RAG TAG XI
cpto 
Newbie

25 Oct 2003 11:04 AM
Thanks, Dengar. I understand that not all two-hour movies will fit on one disk. Hoewever, title set 1 for Field of Dreams was a little over 4.1G, and should have had little, if any, compression.

C
dengar 
Senior Member

25 Oct 2003 11:12 AM
cpto

You also need to keep in mind the size of the audio sets and subtitle sets.

Audio tracks can easily add from 500 MB to 1 GB to your total file size. Subtitles can add another 300 MB or more.

So just because the size of the video is 4.1 GB is not enough info to determine if the movie will fit on one disc or need to be split across two, or compressed to fit.
dbminter 
Member

1 Nov 2003 10:36 AM
I've noticed DXCP doing some weird compression choices. On the Dalek Invasion Of Earth Doctor Who DVD, it chose 38% compression for the 6 episodes (1 title set) which couldn't be changed. But, for another title set, which was only 8 K, it allowed up to 75% compression. Yet, due to its file size, I wanted no compression on it. However, DXCP would not change it below the 25% it had set. So, the one compression I could change was for one that didn't need it and then only to increase its compression to a bizarrely too huge value for something so small to begin with. :)
a_reader 
Newbie

1 Nov 2003 5:18 PM
The latest release, 3.2.1 appears to solve the overcompression issue, for me at least.

For the first time, Platinum is burning 4.3GB consistently and apply no more compression than necessary.

I've backed up 4 titles with no problems. Instead of small ring on the outside of the discs, the entire disc is being used.


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atlanta_reader
Kickback 
Junior Member

1 Nov 2003 6:19 PM
cool nice to hear that
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