Key frame every 1 frames

[craigk70591951]

I am trying to force the number of keyframes in my video (Apple ProRes 422 Proxy), but the button is greyed out.

Does anyone know how to make this feature available?

[David Arbor]

ProRes is an intra-frame codec, which means that each frame is already encoded in its entirety and doesn't rely on others to be rebuilt, so the "key frame" setting doesn't apply.