Toast Buffer Underrun Error from iDVD .img

Question

Toast Buffer Underrun Error from iDVD .img

Happy New Year All.

Need help, iMovie project is 3hrs 59mins, disk image appears (7.46GB) and plays fine.

Toast Titanium 7.0.2 gets to Writing Lead-in/Preparing then returns Buffer Underrun Error. Prevention is checked in Recorder settings.

I've gone done to the slowest write speed with the same result.

Strange things is, whether I drag or navigate to .img to mount the disk image, a "1" in the .img title is changed to a "!" in the Toast window, and DVD Player opens up the image. Is this normal?

iMac G5 (Rev B), 20, 2.0 Ghz, 512 Ram Mac OS X (10.4.2)

Posted on Jan 2, 2006 9:58 AM

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Answer 1

F Shippey

Level 7

21,500 points

Jan 2, 2006 12:22 PM in response to Robert Williams3

Need help, iMovie project is 3hrs 59mins, disk image
appears (7.46GB) and plays fine.

Toast Titanium 7.0.2 gets to Writing
Lead-in/Preparing then returns Buffer Underrun Error.
Prevention is checked in Recorder settings.

I've gone done to the slowest write speed with the
same result.

Are you using DVD+R DL discs? What brand of media are you using?

Are you doing anything else with your computer during the burning process?

Strange things is, whether I drag or navigate to .img
to mount the disk image, a "1" in the .img title is
changed to a "!" in the Toast window, and DVD Player
opens up the image. Is this normal?

How many characters are in the file name?

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Answer 2

Jan 2, 2006 3:17 PM in response to F Shippey

Are you using DVD+R DL discs?

No, Toast is compressing 41%.

What brand of media are you using?

Verbatim DVD -R single layer.

Are you doing anything else with your computer during the burning process?

A number of programs are open. One time maybe iTunes is playing, or Safari is pulling up a page or two. But I believe I've tried a burn overnight.

How many characters are in the file name?

20 including spaces/underscores. And just tried to change the file name, Toast persists in saying its reading from file: "!3th....", when the .img name is changed to "thirteenth..."

Thanks for your attention on this.

iMac G5 (Rev B), 20, 2.0 Ghz, 512 Ram Mac OS X (10.4.2)

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Answer 3

F Shippey

Level 7

21,500 points

Jan 2, 2006 4:07 PM in response to Robert Williams3

No, Toast is compressing 41%.

OK, so we aren't really talking about an iDVD 5 problem. I suggest you ask your question on the Roxio Toast support forum at http://www.roxio.com/en/support/toast/v6.jhtml

20 including spaces/underscores

Spaces in file names aren't a good idea in general. Try taking them out and replacing them with underscores.

I would also suggest you have nothing else running when you try the burn.

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Answer 4

Jan 2, 2006 5:08 PM in response to F Shippey

Many people here are knowledgeable about Toast so thought to ask.

The last time I had a problem with a project Apple Discussions went off-line for renovations. As it happens Roxio Discussions are now off-line as they revamp they're discussions. I think Apple Discussions has lost something in my short time on it, but many have thought Roxio's needed fixing.

Spaces are automatically replaced with underscores.

I've successfully burned with other things running, seems people are supposed to get a second machine if they want to burn and work on other things. So much for multitasking or multithreading.

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Answer 5

F Shippey

Level 7

21,500 points

Jan 2, 2006 5:21 PM in response to Robert Williams3

I read through my Toast 7 manual and it says you can create a disk image of your additionally compressed to-fit DVD. Why not try that.

So much for multitasking or multithreading.

It's just an 'when all else fails try this' suggestion.

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Answer 6

Jan 4, 2006 2:20 PM in response to F Shippey

A Toast disk image of the iDVD disk image gives same error.

As I mentioned before and have tried again, same error on an overnight burn with nothing else running.

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Answer 7

F Shippey

Level 7

21,500 points

Jan 4, 2006 3:15 PM in response to Robert Williams3

A Toast disk image of the iDVD disk image gives same
error.

So you are saying that taking the DL disk image file (file extension .img) you created in iDVD 5 and using Toast Titanium 7 to create a 'fit-to-disk' DVD disk image (file extension .toast) still gives you a Buffer Underrun Error?

Even though you aren't writing to writable media at that point?

Or are you trying to burn a successfully created .toast image file to writable media and THEN get the Buffer Underrun Error?

(As an experiment, last night, I took one of my short DVDs and used Toast Titanium 7 to create a new disk image file and everything worked just fine.)

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Answer 8

Jan 4, 2006 4:21 PM in response to F Shippey

The latter...trying to burn a successfully created .toast image file to writable media and THEN get the Buffer Underrun Error

I've burned other projects (not like this one) with Toast already. Eventually I guess this project will burn for no explainable reason.

iMac G5 (Rev B), 20, 2.0 Ghz, 512 Ram Mac OS X (10.4.2)

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Answer 9

F Shippey

Level 7

21,500 points

Jan 4, 2006 4:36 PM in response to Robert Williams3

The latter...trying to burn a successfully created .toast image file to writable media and THEN get the Buffer Underrun Error

OK - we've finally isolated the problem to a media problem or burner problem. I suppose it could also be related to marginal RAM in your computer. Anyway, we've finally moved beyond a problem with iDVD 5 or a problem with Toast Titanium's reencoding process.

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