ProRes 4444 XQ in AVFoundation

4444 XQ has been around for a while, and AVF can decompress it, but will it be able to encode it also at some point? I tried passing the fourcc (ap4x) into a VTCompressionSessionCreate, but it doesn't work, even in the latest beta 10.11 sdk.


Can this be enabled, or am I missing something?

Just bumping this one. Am I missing something really obvious? I've tried the FourCC of "ap4x" with no success.

Another bump. I put in a bug to Apple, but it was closed. Does anyone know if I'm just missing something here?

Hello Apple, please respond to this question.

How can the modern Apple APIs be used to generate ProRes 4444 XQ content?

The answer I got from an engineer was "I'm not allowed to talk about this" ...

So I would not expect any answer here.

Would love an answer for this!

ProRes 4444 XQ in AVFoundation
 
 
Q