Hi.
I also have to export an webm file with alpha (i fact the client asked me an mp4 with transparency but I suppose that this doesn’t exist).
I’ve made my key in After effect, exported it in Apple Pro Res 4444 + alpha and in quicktime animation + alpha
Then I’ve made a small investigation and downloaded a plugin for Adobe Premiere and Media Encoder.
Now, the thing is, when I export the file in a webm format with NO alpha, it is working. But when I try to do it with WITH an alpha, both Premiere and Media Encoder are crashing. And the weird thing is, though they crashed, I still can open that exported file but, again, the alpha is not in the file.
I’m using the last versions of Premiere and Media Encoder
Does anyone had the same issue?
Thanx