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Can not get transparency
I am trying to render a scene in which I cut out the main character from the background using a mask.
So I have this transparent background now.Problem is that when I render the footage, the rendered file does not keep the transparency info in Sony Vegas.
Adobe After Effects recognizes the background as transparent, but Sony Vegas does not.
I tried all kinds of output formats – mov, wmv, avi, etc.
Used RGB+Alfa in the settings. No results.
Still Vegas would not read the background as transparent.What is wrong?
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4 Replies
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Anyone?
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I don’t use Vegas, but maybe you could get around the problem by rendering the footage Straight rather than Premultipled. You could then composite the RGB with the Alpha in your editing software. I assume you could, anyway. Aharon has done a podcast somewhere on the Cow explaining the concept, so that should help you get to grips with it.
Simon Bonner
youtube.com/simonsaysfx
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i’m not a veags user either, but i would be surprised if it can’t read a file with a alpha channel… my guess would be that there is a setting in vegas’ import settings that is set to ignore the alpha channel. i’d check the help file/manual or post in the vegas form…
if it can’t, then simons’ suggestion is good… i can’t remember if aahron’s tutorial covers setting up the render queue to render both the rgb file and the alpha file as separate files with one render pass, but that is easy to set up, if it the way you need to go….
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
I managed to solve it thanks to the guys from the AE forum.
It was in the properties of the file.
You put it on the timeline, then right click it >>> Properties >>> Media. And there is a drop down with Alpha settigns.
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