Thank you for the responce. As for jpeg, that is true that alpha is not supported, but (and correct me if I am wrong) I use the "video for windows" format in for after effects cs5 below are the output settings I used. I have heard that sometimes pre-render can effect alpha when rendered out of adobe after effects, has anyone else heard of this? If so what settings are the best when rendering out a project? Please point out if I am still doing something wrong, any input would be appreciated.
I have tried both Straight and Premultiplied in the color option. I know that for my purposes premultiplied is the best setting, but I am getting desperate.
Got Quicktime? Use either the Animation or PNG codecs for rendering. They both support alpha channels, both straight and premultiplied.
Yes I have used the quicktime as an output with alpha to my timeline and that will give me the effect I need to produce. The problem is that my editor (NewTek's, VT5) is a native AVI timeline and when I render out large projects with quicktime's on an HD Timeline it crashes the system. That is another issue, I need to figure out how to create a working alpha channel on an HD 1920x1080 29.97 timeline. I am just not having luck. Any other suggestions would be appreciated. I appreciate the ones I have received so far.
I don't EVER use AVI's, even on my Windows machine at home. Even so, I'm pretty sure an uncompressed AVI supports alpha channels. Try rendering one out and see what happens. There may be other codecs for AVI's that support alpha channels, but I have no knowledge of them.
The problem is that my editor (NewTek's, VT5) is a native AVI timeline and when I render out large projects with quicktime's on an HD Timeline it crashes the system.
It's not really your problem, it's the editor's. NewTek is nothing special, there's a user support forum, probably, and he's got a powerful PC that is capable of importing and converting whatever you hand to him. Find the specs for the application and figure out what your common alpha-supported codec will be. You've got realize AVI was orphaned more than 15 years ago, it's a dead system. That NewTek is hanging onto it is weird and might one of the reasons NewTek is a footnote in this business.
Failure to render huge timelines is often a RAM issue but it can also be related to bad drive connections. But debugging big renders is out of my experience.
Thanks Bogiesan, I will have to look into those ideas.