DVD media burning question

Hi,

My question is when I burn a video project to DVD-r I get glitches
(like dirt/finger prints) are on the disc. At first I thought this was
caused by a slow computer system. I have since upgraded to a Dell 490
workstation PC and I still get this problem. I am using TDK DVD-r 16x
discs. I find that the discs run the best if they are absolutely
perfectly clean. But this does not insure that they will play
perfectly.

Does anyone have any thoughts on this subject and is there any
solution to this problem. If I copy a dvd the computer does not show
any errors in writing to the DVD even when I compare the data.

Is this a disc problem or a bitrate problem? I have not found any real
difference between 4mb-4.5mb and about 7mb bitrate in quality. This is
doing Standard def. video.

My main question is if I take said DVD and have it professionally
duplicated is the errors going to show up in the final pressed DVD
assuming this is a media problem?


Thank in advance for you thoughts,

John

In article <02ef610d-7abd-48c1-8790-cb4726ffce6d@m34g2000hsf.googlegroups.com>,
John <johng1@pacbell.net> wrote:
>Hi,
>
>My question is when I burn a video project to DVD-r I get glitches
>(like dirt/finger prints) are on the disc. At first I thought this was
>caused by a slow computer system. I have since upgraded to a Dell 490
>workstation PC and I still get this problem. I am using TDK DVD-r 16x
>discs. I find that the discs run the best if they are absolutely
>perfectly clean. But this does not insure that they will play
>perfectly.
>
>Does anyone have any thoughts on this subject and is there any
>solution to this problem. If I copy a dvd the computer does not show
>any errors in writing to the DVD even when I compare the data.
>
>Is this a disc problem or a bitrate problem? I have not found any real
>difference between 4mb-4.5mb and about 7mb bitrate in quality. This is
>doing Standard def. video.
>
>My main question is if I take said DVD and have it professionally
>duplicated is the errors going to show up in the final pressed DVD
>assuming this is a media problem?

If the data compares 100% with the original, there may still be correctable
errors that cause pauses during reading. TDK media is usually good
quality, although there have been some fakes out there. But burner/media
mismatch can produce barginal burns even with good media. If your DVD burner
is not using the correct write strategy for the media, the error rate will
increase; check that you have the most recent firmware installed. What
burner are you using?

Standalone DVD players are more likely to hiccup on marginal discs than
computer DVD drives. One thing you might try is to scan the finished
disc with Nero DVD Speed (http://www.cdspeed2000.com) and see what the
actual error rates are like.

On Feb 11, 12:44*pm, John <joh...@pacbell.net> wrote:
> Hi,
>
> My question is when I burn a video project to DVD-r I get glitches
> (like dirt/finger prints) are on the disc. At first I thought this was
> caused by a slow computer system. *I have since upgraded to a Dell 490
> workstation PC and I still get this problem. *I am using TDK DVD-r 16x
> discs. *I find that the discs run the best if they are absolutely
> perfectly clean. *But this does not insure that they will play
> perfectly.
>
> Does anyone have any thoughts on this subject and is there any
> solution to this problem. If I copy a dvd the computer does not show
> any errors in writing to the DVD even when I compare the data.
>
> Is this a disc problem or a bitrate problem? I have not found any real
> difference between 4mb-4.5mb and about 7mb bitrate in quality. This is
> doing Standard def. video.
>
> My main question is if I take said DVD and have it professionally
> duplicated is the errors going to show up in the final pressed DVD
> assuming this is a media problem?
>
> Thank in advance for you thoughts,
>
> John


Are you certain the problem is in the burning? Some codecs create a
stutter after certain transitions during rendering. Then the problem
is coded into the mpg. This is a known bug. Change the transition,
or cut a couple frames out and re-render with Smart Render. Change
codec possibly? If the problem is consistently in the same place, and
after a transition or title or such, this would be the place to look.
I have it going from original HD to SD for DVD burning using Ulead
software. If problem is in burning, look at background programs and
turn them all off (Start - Run - "msconfig" - StartUp - Disable all
(required for Windows will reset and run) - reboot). Perhaps your
email client is checking or running virus protection and causing a
stutter. If you Disable All that will include virus protection, so
suggest you disconnect from internet. Now you have a clean, dedicated
video machine and have eliminated one possible source of problems.
After editing/burning go back and reset all or selectively reset,
reboot, and back to normal. Some editors create a separate user for
even dual boot for this purpose. Have you watched complete file on
the PC before burning? If that is clean, then burning is probable
cause. If not, editing or rendering is the place to look. I confess
I usually don't watch the intermediate step. I watch in editor, then
render, burn, and watch. Really should watch after render and before
burn. Media can cause problems, but not usually what you describe.
Jim McGauhey
Washington State

John wrote:
> Hi,
>
> My question is when I burn a video project to DVD-r I get glitches
> (like dirt/finger prints) are on the disc. At first I thought this was
> caused by a slow computer system. I have since upgraded to a Dell 490
> workstation PC and I still get this problem. I am using TDK DVD-r 16x
> discs. I find that the discs run the best if they are absolutely
> perfectly clean. But this does not insure that they will play
> perfectly.
>
> Does anyone have any thoughts on this subject and is there any
> solution to this problem. If I copy a dvd the computer does not show
> any errors in writing to the DVD even when I compare the data.
>
> Is this a disc problem or a bitrate problem? I have not found any real
> difference between 4mb-4.5mb and about 7mb bitrate in quality. This is
> doing Standard def. video.
>
> My main question is if I take said DVD and have it professionally
> duplicated is the errors going to show up in the final pressed DVD
> assuming this is a media problem?
>
>
> Thank in advance for you thoughts,
>
> John
>
I'm not sure this is your problem... but I'm just going to put this out
here in case it helps someone else... And I'm not sure what your video
source is... But...

I have a Hauppauge WinTV-250 Tuner card and I use MovieFactory 3 to
Edit/Author DVD's. For some reason, my TV tuner card used to record
"Lower Field First" (the "B" field). The MovieFactory software wanted
to generate DVD's with "Upper Field First" (the "A" field). This caused
the video to jump all the time! As soon as I got them in sync, the
problem went away. I use "A" field first in both.

Keith