Dv to DVD rendering problems

Neil1976 · Post by **Neil1976** » Mon Mar 03, 2008 1:02 pm

Hi

Sorry if this has been done before - I've had a look around the board and couldn't find anything on it.

I have captured mini-DV to my computer and the files look fine.

I've then edited a short piece and rendered it for DV and again it's fine.

However, if I render it for DVD or try to burn a DVD from the DV version (something I woulnd't normally try, but I got desperate!) some of the clips develop what I can only describe as "pixelly waves" across a portion of the screen (all the way across the screen, horizontally, but not the whole screen vertiaclly, if that makes any sense).

These waves aren't on the original files, and they're not on the version of the project that I rendered for DV.

So what is it and how do I stop it?

Many thanks in advance.

Post by **Ron P.** » Mon Mar 03, 2008 1:26 pm

Welcome to the forums,

It seems like you have reversed the field order in the burn module. After you have opened the burn module (Share>Create Disc), you need to set the Project Settings. The Editor and Burn Module have separate settings. So click the gear looking icon in the lower left. Then press the Change MPEG Settings button and select Customize from the menu options.

In the Video Save Options window there are 2 tabs. On the first tab (General), locate the Frame Type. Since the source video is DV, the frame type must be Lower Field First. It probably says Frame based or Upper Field First, if so change it to read Lower Field First.

Neil1976 · Post by **Neil1976** » Mon Mar 03, 2008 2:04 pm

Many thanks for the swift response!

I'll give that a go tonight and let you know if it works.

Thanks again.

Neil1976 · Post by **Neil1976** » Mon Mar 03, 2008 9:04 pm

OK, now actually being computer with VideoStudio, I've been able to check, and it's not the Frame Type, because the pixely wave thing across the screen is visible on the DVD-rendered version within the main screen, not jujst when it's been burned to DVD (although it does [i]appear[/i] with the DV-rendered version, but only when it's been burned to DVD).

And the Frame type is set at Lower Field First...

It only appears when the file is rendred or burned to DVD, for some reason.

Any thoughts?

Thanks

Black Lab · Post by **Black Lab** » Mon Mar 03, 2008 10:08 pm

Let's do it this way:

1. Right click on one of your raw video clips and post the properties here.

2. Go to File>Project Properties and post your project properties here.

3. After your editing is done and you click on Share>Create Disc and the burn module opens, click on the cogwheel icon in the lower left and post those output properties here.

One other thing. Are you following the suggested workflow of first creating a DVD-compatible MPEG2 that you insert at the burn stage?

Neil1976 · Post by **Neil1976** » Mon Mar 03, 2008 11:14 pm

OK...

1.
File
File format: Microsoft AVI files -- open DML
File size: 1,303,740 KB
Frame rate: 25.000 frames/sec
Duration: 370,760
Data rate: 3515.63

Video
Compression: DV Video Encoder -- type 1
Attributes: 24 bits, 720 x 576, 16:9
Total frames: 9,269 frame(s)

Audio
Compression: DV Audio -- PAL
Attributes: 48.00 kHz, 16 Bit, Stereo
Total samples: 17,796,480 samples

2.
Project Properties
File size: 83.5KB (85504 bytes)
Version 11.00
Duration: 00:02:13:00

Edit file format: MPEG files

PAL (25 fps)
MPEG files
24 bits, 720 x 576, 25 fps
Lower Field First
(DVD-PAL), 16:9

Project Options -

Ulead VideoStudio
TV standard: PAL (25 fps) [I'm in the UK]
Perform non-square pixel rendering
Audio channels: Multi-Channel SUrround Sound

General
Data track: Audio and Video
Frame rate: 25 frames/second
Frame type: Lower field first
Frame size
STandard 720 x 576
Display aspect ratio: 16:9
compression
Media type: PAL DVD
Quality 100

Video settings
Video format: MPEG-2
Two-pass encode
Video data rate: Variable 6000

Audio settings
Audio format: DOlby digital audio
Audio type: 3/2(L,C,R,SL,SR)
AUdio frequency: 48000 Hz
AUdio bit rate: 384 kbps

3.
MPEG files
24 bits, 720 x 576, 25 fps
Lower Field First
(DVD-PAL), 16:9
Video data rate: Variable (Max. 6000 kbps)
Audio data rate: 384 kbps
Dolby Digital Audio, 48 KHz, 3/2(L,C,R,SL,SR)

Is that enough info?

Thanks very much.

Black Lab · Post by **Black Lab** » Tue Mar 04, 2008 12:43 am

OK, so your clips are DV-AVI. Great. But your project is set for MPEG-2. You need to change your project settings to match your clip's properties. When you are done the editing process then you will render it to an MPEG-2 file.

Please read the Suggested Workflow.

Neil1976 · Post by **Neil1976** » Tue Mar 04, 2008 10:29 am

OK, think I'm getting it (apologies for being slow - I've been using VSP for about four years, but never had this problem before!)

Are you saying that the project properties should be the same as the original source material - i.e. DV - rather than what I'm aiming for - i.e. DVD?

Again - sorry, I'm poatin g this from work, away from my editing computer - I'll try it later and report back.

Thanks again for all the help.

Post by **Ron P.** » Tue Mar 04, 2008 12:45 pm

While in the Edit steps, you are still using a VSP, which is a Video Studio Project file. VSPs are nothing more than sets of instructions. There are no video clips, images, ect., in a VSP.

Yes your Project Properties should match that of your source video.

Neil1976 · Post by **Neil1976** » Tue Mar 04, 2008 1:23 pm

Thank you very much for your patience and assistance.

Regards

Neil1976 · Post by **Neil1976** » Thu Mar 06, 2008 3:37 pm

OK, sorry to return with this - I have tried everything suggested above and it makes no difference. It's not the project or file formatting, but when the file is rendered for DVD parts of it become pixelated.

The pixelation is not on the DV file - can anyone think why the process of rendering from an apparently fine DV file would introduce pixelation, or do I just assume that that file is corrupted in some way that I can't see?

I have re-captured it since the last time I tried rendering it, in case that was the problem, but it does exactly the same thing.

Thanks again

Black Lab · Post by **Black Lab** » Thu Mar 06, 2008 7:16 pm

Is it the final DVD that shows pixelation, or the MPEG-2 file (before burning to DVD)?

Neil1976 · Post by **Neil1976** » Thu Mar 06, 2008 9:08 pm

It's the file, because I can see the pixels on the preview, when playing it back prior to rendering (and also if I look at it through WMP).

If I render it as DV, there is no such pixelation, but if I then burn that version to DVD, they appear on the DVD.