Comments

satish wrote on 11/20/2002, 2:23 PM
You want a plugin to do that? :)
craigunderhill wrote on 11/20/2002, 2:59 PM


OH MY GOSH!!! YES....YES (i'm jumping up and down in my mind)!!

can you do it?

after effects just has the option to render the alpha only. it's cool because you can key out the background on a moving object, then export just that moving alpha channel. it's amazing the fun you can have after you have an animated alpha!


please... i think everyone would love something like that. i know i'd like it.

thanks.

-craig
craigunderhill wrote on 11/20/2002, 3:01 PM


satish-

one more thing.. once exported as an alpha channel only (to an avi/uncompressed file). will vegas recognize that file as a true alpha, once you make it a child of the main track?

thanks again.
FadeToBlack wrote on 11/20/2002, 3:01 PM
craigunderhill wrote on 11/20/2002, 3:02 PM
hey, that's sounds cool.

satish wrote on 11/20/2002, 3:42 PM
You could use the masking out method pointed out by gary. If you want any addons to that, may be a plugin can be thought of.
satish wrote on 11/20/2002, 4:04 PM
"masking out method" should have been "mask generator plugin"
craigunderhill wrote on 11/21/2002, 1:54 PM
i think what i'd really like is spawned from a bit of laziness. i'd like to do everything, then just have the option in the render dialog that reads "export alpha only".

that's all i really wish for. workarounds are wonderful, especially if you are in a crunch, and that's all you've got. but, for normal everyday stuff, a little box to click would be much nicer.

thanks for all the input.

-craig
EW wrote on 11/22/2002, 7:15 AM
>>He probably wants a travelling matte.>>

What's the difference between creating a traveling matte and simply having a foreground object on a chromakey background?

Unless, the object you are trying to isolate was originally shot or composited on a non-keyable background, such as a street full of traffic, then a rotoscope would be needed to isolate the object.

Is it possible to isolate an object from a "regular" background without frame-by-frame rotoscoping?
SonyDennis wrote on 11/23/2002, 6:36 PM
If you apply the Mask Generator to the Video Preview, and set type=alpha, it will copy the alpha channel to the RGB channels, which can be rendered to any format you want. I think that's what was being asked for here.
///d@