If I render out a project using CMND E and select ProRes 422, Motion renders the alpha channel for the background even though I have alpha deselected in the render settings. What gives?
Thank you!
Scot Walker wrote:
...What gives?…
When your project has no background - what should Motion render instead??
Actually, there is no alpha channel in the exported file itself. If you place that into the timeline of an app that automatically treats black areas as alpha, it will seem that way. But only ProRes 4444 has an actual alpha channel assigned to the file.
Karsten Schlüter wrote:
Scot Walker wrote:
...What gives?…
When your project has no background - what should Motion render instead??
It should render the color I selected for the background in the project settings. In this case, that is white. That's the way Motion has behaved in the past, IIRC.
BenB wrote:
Actually, there is no alpha channel in the exported file itself. If you place that into the timeline of an app that automatically treats black areas as alpha, it will seem that way. But only ProRes 4444 has an actual alpha channel assigned to the file.
Yeah, thanks. It's black and since I have selected white as my background color, I assumed it made it alpha but it is not. It's just a black solid instead of white. Weird
Thanks for the reply!
Where you set the background color to white in the project properties, there is a pop up menu. By default, it's set to Transparent. Set it to Solid.
Oh yeah! I forgot about that pop-up menu. That was it. Thank you!
Why does ProRes always make the background alpha even when alpha isn't selected?
