Last 2 Minutes of Movie Cut-Off On DVD Disk

BobWard wrote on 6/21/2012, 4:03 PM
I rendered a movie from VMS10 HD that was 1-hr & 35-minutes long. Renderd to mpeg2 and AC3 and opened the files in DVDAS 5.0. Proceeded to make a DVD. Everything went smoothly and at the end of the burn operation, I got the message that the burn was successful.

Went to play the DVD and everything plays fine except about the last 2 minutes of the movie have been cut-off.

The combined mpeg2 and AC3 files were 4.345 GB. DVDAS says that 4.5 GB of disk space were used.

The DVD is supposed to have 4.7 GB of capacity. Have I somehow exceeded the disk capacty? Is there some file overhead that DVDAS has added to my mpeg2 & AC3 files that have caused me to exceed the 4.7 GB disk capacity?

I rendered this twice. Once with the loop markers in VMS set to the beginning and end of the movie - with the "Render Loop Region" option turned on in VMS. On the 2nd render, I just let VMS find the beginning and end of the movie. Both rendered files play to successful completion in the DVDAS Preview window - so all the movie got rendered ok. Must be some kind of a disk capacity limitation.

Any suggestions?

Comments

Steve Grisetti wrote on 6/21/2012, 4:12 PM
Did you by any chance change a setting in your project properties so that it isn't Fit to Disc?

Yes, DVDs do hold 4.7 gig of data, but when you're talking about data math and storage math, things are never quite what they seem. Sol just because your source files total up at 4.35 doesn't mean that your final DVD files will fit on a disc.

You can put about 70 minutes of video on a single layer DVD. After that, you've got to let the program recompress it to fit.
BobWard wrote on 6/21/2012, 4:32 PM
Steve,

I did a burn a couple days ago that played to successful completion. However, the version I am trying to burn now has about 2 minutes of additional video added to it that the previous burn did not have. As a result, I am losing about 2 minutes on the end of the movie. So I must have slightly exceeded the usuable disk capacity when I added that extra video - even though it is not over the 4.7 limit.

I just did an Internet search and found that the advertized 4.7 GB capacity of a DVD is actually only 4.3 GB. The explanation was based on the way a GB is defined in different circles. One definition has a GB as 1.024,000 bytes while the other definition says 1,000,000 bytes. So I have a feeling that these DVDs can really only handle 4.3 GB.

That would explain my problem since my combined mpeg2 and AC3 files are at 4.3445 GB, just slightly over the 4.3 usuable limit.

Guess I will have to trim out a few minutes of video.

Bob
MSmart wrote on 6/21/2012, 11:30 PM
the version I am trying to burn now has about 2 minutes of additional video added to it that the previous burn did not have

Did you do "replace video" when opening the project? If so, look at the new video in the timeline, I'll bet the Out Point is set to the length of the previous video. Reposition it to the end of the new video and re-render.

It's what I have to do when I use the same project to burn a rough cut disc then replace the files with the final versions.
Chienworks wrote on 6/21/2012, 11:41 PM
I think MSmart's got the answer.

That being said, in addition to DVDA's (often erroneous) size-on-disc calculation, in the final burn it will report a fatal error if it couldn't fit the material on the disc. If you don't see this fatal error then the burn was complete.
BobWard wrote on 6/22/2012, 12:08 AM
I'll be darned. You are right - the End Point marker was set about 2 minutes short of the end of the revised movie version.

Since the file names are exactly the same for both movie versions, I did not realize this could happen. Where is the "Replace Video" option command when you open a project?

Thanks MSmart - great info to add to my list things to be aware of.

Bob
MSmart wrote on 6/22/2012, 8:46 PM
One point for me.

When video files in a project can't be found, DVDAS will offer to look for it or let you choose a replacement. As the filename/path is the same, it just opens that new file.

But as you found out, it doesn't know about length so if it changes, you have to manually adjust. It's bit me a few times when I forgot.

Aware you are.