Artifacts In DVD

Question

Level 1

0 points

Artifacts In DVD

I have a I DVD (I DVD 6) project that i have burned to 2 different DVD's ( One Printable & 1 Non Printable- Both Verbatim DVD-R) and i keep getting Artifacts in the 5 same spots. I have checked the Original Mini DV tape and the I Movie project and the 5 areas in both are artifact free. I am working on a I Mac G5, have 30 GB of free space when burning and making a disk image and burning the disk with the Disk Utility tool. When i say Artifact i mean the picture will break up into little square boxes.
Anybody have any ideas ????
Thanks Steve

I Mac G5, Mac OS X (10.4.8), Mini DV tape shot on Sony VX 2000 / I Movie 6 / I DVD 6

Posted on Oct 7, 2007 3:15 PM

Reply

Answer 1

F Shippey

Level 7

21,500 points

Oct 7, 2007 3:20 PM in response to VIDEO KEEP

and making a disk image and burning the disk with the Disk Utility tool

Do you see the artifacts when you play the disk image with Apple's DVD Player application?

Reply

Answer 2

VIDEO KEEP Author

Level 1

0 points

Oct 7, 2007 3:36 PM in response to F Shippey

Hi
No i don't
Steve

Reply

Answer 3

F Shippey

Level 7

21,500 points

Oct 7, 2007 3:44 PM in response to VIDEO KEEP

No i don't

OK, so it IS a burning error problem. You said you were using Verbatim media - which should be OK. You need to reduce the burn speed in Disk Utility to 4x or lower when you burn the disk image file to writable media.

Reply

Answer 4

VIDEO KEEP Author

Level 1

0 points

Oct 7, 2007 3:54 PM in response to F Shippey

Do you see the artifacts when you play the disk image with Apple's DVD Player application?

Hi
I take that last statement back, I just went back and looked and YES i do see them when viewing in Apples DVD Player.
Also the Verbatim's are 4X and i have been burning the slowest speed, i think 2X

Reply

Answer 5

F Shippey

Level 7

21,500 points

Oct 7, 2007 4:23 PM in response to VIDEO KEEP

I take that last statement back, I just went back and looked and YES i do see them when viewing in Apples DVD Player.

Ahh .. that makes a diffeence 🙂

It sounds like a content issue then. Is there a lot of fast motion or fast pans where you see the problems? Did you do any cutting (removing content) at these points?

Reply

Answer 6

VIDEO KEEP Author

Level 1

0 points

Oct 7, 2007 4:37 PM in response to F Shippey

It sounds like a content issue then. Is there a lot of fast motion or fast pans where you see the problems? Did you do any cutting (removing content) at these points?

Yes, it is a Wedding Video. Runs about 1 Hour 45 Min. in two parts (Church Ceremony about 1/2 hour - no problems, 2nd part the Reception in which all the problem areas are. In one case i am doing a slow zoom out of the Bride & Groom (Very little motion) and get Artifacts. The othe cases it is lower light conditions (50 Watt light on the camera) and lots of party lights (Strobes and blue lights) and people dancing and waving. Been using the same set up (Camera & Mac) for last 3 years and have not seen this problem in the past so i was wondering if something in the Mac was stating to go ??

Reply

Answer 7

F Shippey

Level 7

21,500 points

Oct 7, 2007 5:02 PM in response to VIDEO KEEP

Well, at 1hr 45min you are getting close to the maximum compression that iDVD does. More compression=more artifacts.

i am doing a slow zoom out of the Bride & Groom (Very little motion) and get Artifacts

Keep in mind that the mpg-2 compression used works on the frame-to-frame differences - and the more the difference from frame-to-frame - the more artifacts are generated.

The othe cases it is lower light conditions (50 Watt light on the camera) and lots of party lights (Strobes and blue lights) and people dancing and waving

Low light usually means more electronic noise - which causes major frame-to-frame differences. Dancing and waving means lots of frame-to-frame differences as well.

I suggest you cut the content into 2 pieces, with neither piece being over the 60 minute limit of 'Best Performance'. 'Best Performance' will produce a DVD with the least compression you can get with iDVD.

i was wondering if something in the Mac was stating to go ??

I doubt it! Just remember, the better the original content quality, the better the finished DVD will be.

Reply

Answer 8

VIDEO KEEP Author

Level 1

0 points

Oct 7, 2007 5:35 PM in response to F Shippey

First of all thank you so much for the information.
I suggest you cut the content into 2 pieces, with neither piece being over the 60 minute limit of 'Best Performance'. 'Best Performance' will produce a DVD with the least compression you can get with iDVD.
So I should split the I Movie project into 2 60 minute sections and burn Disk Image of each and then burn 2 separate DVD's uing Best Performance, I will do that and let you know how it works out.
Can you tell me:
1) Are thier any other applications that would work with I DVD themes ?? (Toast ?)
2) Do you think i should upgrade to the newest I Life that has the Newwr IDVD, i understand that program offers a Professional Qualiy level. Thanks again for your time and information.

Reply

Answer 9

F Shippey

Level 7

21,500 points

Oct 7, 2007 5:43 PM in response to VIDEO KEEP

1) Are there any other applications that would work with I DVD themes ?? (Toast ?)

Nope, sorry

2) Do you think i should upgrade to the newest I Life that has the Newer IDVD, i understand that program offers a Professional Quality level

Going to the iLife '08 applications introduces a whole new set of 'challanges'. Stick with what you have and make two DVDs.

Reply

Answer 10

VIDEO KEEP Author

Level 1

0 points

Oct 9, 2007 10:09 AM in response to VIDEO KEEP

Thanks. Took your advise, split project into two parts and the Artifacts are gone. Could not have done it without your advise.

Reply