Sony Vegas 6.0C – 3D Transitions Causing Wave Problems

[Laszlo Kovacs]

Which deinterlace method is set up in the project properties?
I bet “None”.

Choose “Blend fields” or “Interpolate” (which gives better result).

By(t)e
Laca

[Stubenkastl]

Many thanks for your information! It is the problem. I had None in this field. Really – you helped me a lot!!! Since there were most of the transitions correct despite a lot of movement and there was not this comb effect with small lines but bulky waves for a very short time I did not realize that this was an interlace problem. But in any case im might not have found this setting.

I tried to find out more about this field. If I understand it correctly it is only for effects like transitions and not for the normal unchanged DV video stream – is this correct? And what is normally the best setting there from your experience? If it is like Sony writes this setting should be per clip and not per project. Somehow I think there should be no field at all but the software should always render with the best settings…

Perhaps I have more things wrong. For PAL MPEG for DVDs I have Lower Field First and a Pixel Aspect Ratio of 1,0926 PAL DV. There are so many conflicting opinions about this on the web so I am a bit worried now… You seem to have a lot of experience with this. Would be glad for any advice.

Thanks a lot again!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Laszlo Kovacs]

Hi,

I’m allways happy if I can help others.

This is from Vegas help:

—————–
Choose a setting from this drop-down list to determine the method used to render effects and deinterlace the two fields that make up a frame.

None
Performs no deinterlacing.

Blend fields
Uses contents from both fields and works well for high-detail, low-motion video.

Interpolate
Uses a single field at a time and works well for high-motion, low-detail video.

No deinterlacing occurs in the Draft and Preview video preview modes. The Good and Best modes apply the selected deinterlacing method.————

So this setting tells Vegas how to deinterlace when it’s necessary.
Deinterlace is only necessery, when your image needs to be converted
to progressive:
in general when your image size differs from the original, so
-some transitions (zoom, 3d trans.)
-when doing pan-crop

But when you deinterlace, you’ll lose motion information!
Don’t worry, Vegas does not deinterlace unless it is necessary.

I use the PAL DV (720*576 25 fps) template, and “blend fields”
as deinterlace method.
I didn’t see any big difference in quality between the two deinterlace method. So I decided to use blend fields becasue it uses
both fields, so I guess I loose less image detail…

[stubenkastl] “Perhaps I have more things wrong. For PAL MPEG for DVDs I have Lower Field First and a Pixel Aspect Ratio of 1,0926 PAL DV. There are so many conflicting opinions about this on the web so I am a bit worried now…”

Don’t worry, the worst thing you can do is mess up field order.
But if you do this, the resulting video will look jerky, containing eye-hurting movement.

I also use PAL DV template with “blend fields” as deinterlace option. That works OK for me.

By(t)e
Laca

[Stubenkastl]

Thank you a lot for your great help!!! I tested Premiere already… But I am not a fan of Adobe – and this started with their Acrobat Reader – what for me is the worst standard software I know. And this after I have been working with computers on an almost daily basis for the last 35 years… *) So you helped me very much that I can stick to Vegas!!!

Sony should think to solve this render problem with the software and not with a setting alone. The interlace METHODE could even be optimized PER LINES if I understand this problem correctly. Some more IF statements cannot have such a bad effect on the rendering time but a huge effect on the rendering quality. But in any case – it was my mistake that I was not able to understand this great software correctly…

*) Don’t think now that I am very, very old!!! Computers started to confuse and annoy me when I was at the age of 14. But I underestimated the addiction at this time they can create and my parents just warned my of the bad girls 😉 So I have many computers now but only 1 girl…to be on the save side.

[Stubenkastl]

Thank you a lot for your great help!!! I tested Premiere already… But I am not a fan of Adobe – and this started with their Acrobat Reader – what for ME is the worst standard software I know. Now I can stick to Vegas :-)))

Sony should think to solve this render problem with the software and not with a setting alone. The interlace METHODE could even be optimized PER LINES if I understand this problem correctly. Some more IF statements cannot have such a bad effect on the rendering time but a huge effect on the rendering quality. In any case – it was my mistake that I was not able to understand this great software correctly…

[Stubenkastl]

Sorry for posting twice – it did not work at first. As I said…computers started to confuse and annoy me pretty early…