Creating a video that will play transparently on a display case

[1adeyo]

Hey all, I'm putting together a promotional video for my company. The tricky thing about this is that I need the video to project transparently onto a special sunglasses display case . By accomplishing this, you will be able to see the video, as well as, the sunglasses behind the video. So I think I need to export the video with alpha channel, and 50% opacity. Not really sure if this will work though. Has anyone out there rendered transparent video to be played on a screen allowing you to see what is behind it in real life?

Thanks,

Nic Deyo

[personal info deleted, forum policy]

[Kib]

You probably need to construct or replace you video edit within an After Effects composition.  Default background of Ae is transparent while Pr is black solid. 

[excited_Genie16B8]

Default background of Ae is transparent while Pr is black solid.

That's incorrect.  Black is simply what shows when there is nothing there.  If you export out to a format with Alpha, the black will be transparent.

[shooternz]

Some one needs to Project a file with an Alpha channel to see if it Projects as Black or Transparent.

Could  be tested with a psd or png with alpha as well if that easier.

I am curious but do not have a projector.

[Kib]

Jim,

of course it does! Hence alpha view etc...

Nic,

apologies for (late night) mistake.

[Dave Merchant]

You're projecting so an alpha channel is irrelevant. You just need a black background.

[Ann Bens]

I am with Dave on this one.

The Sunglass display needs to be (semi) transparant.