3D PinP problems

[Qframe]

As a producer of TV commercials I’m constantly giving the 3D PinP (Edius 2,3,4) filter a work out due to the lack of a DVE in Edius. I mainly use text produced in Photoshop or Quick Titler (both with alpha) and move them in all directions.

When doing this there is a visible thin line that appears where the outside edge of the moving graphic is.

Following numerous complaints from clients I discovered I could eliminate the line by turning on “soft borders”. But this creates a new problem. Another soft line, the width of the soft parameter, appears on the edge of the graphic. It is only faint but is very noticeable over some backgrounds.

Does anyone know how to get rid of this?

[SRsupport]

overscan to 0 might help

I think you already now that light sometimes produces strange effects on alpha.

[Qframe]

Yep tried that no change.

[rone]

I know what you mean, I had this problem - couldn't solve it though. I reckon it's some sort of alpha / aliasing quirk.

Might take another look at it.

[SRsupport]

Did you turn off lights in the 3d pip
Sorry about the overscan thing that is for some other problem.

[Qframe]

Yes turning off the lights is the first thing I tried.

[GrassValley_BH]

Is the line bound to the bounding box of the 3D PiP result, or is it bound to the edge of the graphic? If it's the latter, cropping in 3D PiP should fix it.

[Qframe]

I have tried cropping. It just moves the line closer in.

[STORMDAVE]

As a producer of TV commercials I’m constantly giving the 3D PinP (Edius 2,3,4) filter a work out due to the lack of a DVE in Edius. I mainly use text produced in Photoshop or Quick Titler (both with alpha) and move them in all directions.

When doing this there is a visible thin line that appears where the outside edge of the moving graphic is.

Following numerous complaints from clients I discovered I could eliminate the line by turning on “soft borders”. But this creates a new problem. Another soft line, the width of the soft parameter, appears on the edge of the graphic. It is only faint but is very noticeable over some backgrounds.

Does anyone know how to get rid of this?

Use another application for this kind of work (Such as After Effects)...Edius is an NLE. :)

But I do agree that with simple stuff, Edius should be able to handle it...and 3d PinP needs an overhaul (Such as resolution independence support, etc).

[Qframe]

But I have always been able to do this basic stuff on the Avid and Final Cut.

It is a real pain and not cost effective in business to do it in After FX.

I was very disapointed to find that this was still not fixed in 4.5c.

I may have to go back to Avid or look at the new Premier.

Thanks anyway.

[GrassValley_MD]

3D PiP is a rewrite to fix it. This is being looked at very heavily and was not feesable for 4.5.

However, I am not sure what is happening with your problem. I have used Alpha Graphics in 3D PiP all of the time with light and shadow turned off and I have not seen this line you are talking about.


Mike

[7hbg]

According to my tests, there is no problem: 3D PiP + alpha is working as expected.

Few things must be pointed out:

1. In the 3D PiP setup dialog: Light, Drop shadow and Borders must be disabled.
2. In the graphic make sure:
   • The background is black or dark shade of gray.
   • The Alpha at the edges of the graphic is at 0.

Here is a sample project to show you the output I got: 3DPiP_AlphaTest.zip
(Just unzip it and run the project. You may need to restore the path to the tiff)

The tiff is a butterfly on a black background with alpha applied to the background and the drop shadow.
The black background will make the shadow area go dark underneath the butterfly wings (if you had white background, it would make the shadow ‘glow’ bright).
The 3D PiP just makes the butterfly zigzag and flip on the screen.

[Qframe]

I am using files directly from Photshop. ie the key channel generated when you save a Photoshoip file whith no background.

This may be the problem.

I found that these degregate in PinP less (blur) than tiff and tga.

So it seems that Edius does not quite support Photoshop files fully (yet).

Looking forward to the next Edius update.

[SRsupport]

I use psd files without problems.

Lights off .

[STORMDAVE]

I am using files directly from Photshop. ie the key channel generated when you save a Photoshoip file whith no background.

This may be the problem.

I found that these degregate in PinP less (blur) than tiff and tga.

So it seems that Edius does not quite support Photoshop files fully (yet).

Looking forward to the next Edius update.

What size files are you using? If it is 4:3 DV, then use a Photoshop preset for DV. 3dPinP doesn't do a great job on scaling large images down when applied.