DVD-lab strange behaviour

[Tomaso]

Hi all!

I have tried DVD-Lab, and DVD-Lab Pro demo to make a full DVD compliant media from an mpeg2 file captured from a DV cam.

Both of them worked fine first where the mpeg2 file was under 4,38 Gbyte.

The second time the mpeg2 file was 4,77 Gbyte, so I tought that the resulted VIDEO_TS folder would not fit on a DVD-R, and I have to split it /with DVDFab for example/.

I don't know why, DVD-Lab was unable to properly author the project the resulted VIDEO_TS folder contained only just the vob files, and I also didn't get any error messages during the process.

DVD-Lab Pro did it fine, I have noticed that in DVD-Lab Pro you can actually select if your project will be DVD5 or DVD9, in the non pro version I didn't see this option.

It is strange tough, that no matter what I choose in DVD-Lab Pro /DVD5 or DVD9/ it will author my 4,77 Gbyte mpeg2 properly, and what I don't understand the resulted VIDEO_TS folder will be 4,28 Gbyte. How?

I didn't choose to reduce the size of the mpeg2 file with the DCT transcoder. What did DVD-Lab Pro do to fit the project on a DVD5 disc?
However I didn't see quality loss compared to the original mpeg2 and the result.

Does anybody have an idea about this nature of DVD-Lab Pro?

Thanx for every answer you may have!

[reboot]

Pro doesn't cut any video or re-encode anything. It just compiles the project. It does leave some "buffer" room, and maybe this is why your 4.77 gig mpeg-2 fits.
It's all in the way a 4.7 gig file is measured.
If 1 gig is 1000 meg or 1024 meg.
If your 4.77 gig file is actually only 4770meg, at 1000 meg per gig (and 1000k per meg, etc), then it fits.
Some programs (even windows) report sizes wrong.