I've tried all the different alpha options and haven't been able to get rid of the halo with any of them. The same key that looks perfect against a background acquires a halo as soon as it is rendered to an alpha layer clip.

I would suggest you use the animation codec with alpha. Works very well and I don't notice any extreme difference in rendering times. Playback might be a bit jerky because it is still a mov file

Dave T2

Well I just tried my method and on the render there was a bit of a crawling edge. I'll try the animation codec, but I can't see were it would have much advantage over the PNG method unless you were doing actual animations (which would benefit because they often have solid lines filled in with solid colors).

I've been complaining about the halo problem for years. I see it in so many composites done by other Vegas users as well.
The wierd thing is even media with alpha generated by Vegas doesn't comp correctly. Take the same media ex Vegas into After Effects, no halo.



Bob.

Thanks Bob. It's reassuring to know it's not just me. So the problem is with Vegas and not with the Quicktime codecs I've tried. Not good news I suppose, but valuable to know.

Bob

That looks strange.

Can you give us some details of the mov and projects settings 8bit, 32bit,
From what app was the mov generated
The Vegas clip looks as if it has a double image sort of interlace artifact

I am not getting a halo at all, but my mov’s are generated from Boris and some 3d apps, progressive, 8bit and 32bit no problem
Composited in Vegas no problem

Here is a scamp I am working on

All mov’s 4 layers the thin black line on flag is on the original flat PNG with a cloth mov displacement and hardlight comp for tones
This is just a scamp = idea for motivation for sponsors

I am working with some guys over there and should film this time next year

Rory

That was from uncompressed AVIs rendered out of Vegas and then comp'ed back togther again using Vegas. Put the same AVI files into AE and the difference is obvious.
Using Vegas to comp the drop shadows they have a band in them i.e. instead of the white shadow having a linear ramp there's a bump in the graph. When you see what happens to the whole image it's pretty bad. All 8 bit in both Vegas and AE, 32bit made no difference. I've seen the same thing trying to comp clouds, fog and smoke. Do it in Vegas, you get this band just in from the edge, exact same files into AE, no problem. Same thing happens whether they're uncompressed AVI or QT files.

I have a theory about what might be going on and it has to do with what Vegas sees as black compared to what AE sees as black but I've not been able to exactly nail the problem down. In any case I've got AE and now generally prefer to use it for compositing. I probably should put more time into the problem but...

Like your scamp, some unpleasant artifacts on the letters. I'd wind the saturation down a smidge, looks a little overcooked for my tastes. I assume you're planning to shoot a real aerial. Good luck with the budget. I saw some great aerial footage today except all the hero shots as you went over the ridges were stuffed. Took me a while to figure out why.
The gyros held the camera as smooth as silk. But the VCR inside the copter was hit hard by the updrafts off the ridges and the heads lost contact with the tape. Even the pros can blow $60K and not get the shot.

Bob.

Thanks for the input Bob

The text artifacts are actually texture from the cloth so I will use a smooth cloth for the final as it might not come across as texture
After looking at it again dropping the sat will improve the look = more natural, thanks again for that
If you don’t mind when I am closer to what we are going to do if I could run it buy you again for some crit it would be appreciated

Yes we are going to do proper Arial shots, For the Ariel and water shots it’s a barter deal so that easers the budget pressure

I have never rendered Mov’s from Vegas always out from other apps ..so this thread is very interesting , will do some runs and check.

Rory