I have a read node in Nuke with a .mov file which definitely has an alpha channel (an explosion).
The simple question is how do I export this from Nuke while maintaining the alpha channel?
I want to do this directly, in other words I have nothing else plugged into it, just want to render it out with alpha as a test.
It's to then be opened in FCP, and I'm using Apple ProRes 4444 which is supposed to support alpha channels. I have tried PNG too which is the format the clip is originally in and that hasn't been a success either. In FCP I make sure to change clip to 'straight alpha' in 'item properties>format'.
^Despite this, I have no alpha channel after the render from Nuke.
I've tried many different settings of 'premultiplied'/'auto alpha' etc. and I get no joy.
I know/think it's going to be something simple, but I just can't see it!
If this test works, then I am hoping to key some footage with Primatte and export the footage with alpha for compositing in FCP, so this was meant to be a 'simple' test. Is it possible to do that - remove green screen and export the footage with alpha channel for direct overlaying in FCP?
Thanks for any help.