I'm working with FCP 10.1.4, and we are trying to internally set keyframes for our effect.
We notice that keyframe times might be one (or more) frames off. For example, on a 300 frame clip, we try to set a keyframe at time 50, and it shows up at time 49. When going through the keyframes (either via API or with UI in FCP), we get keyframe times can be off a frame or two.
I'm trying to set and retrieve keyframes for a floating point slider parameter but experience some problems in FCP X 10.0.5-7
The other issue: When trying to navigate to these keyframes by pressing the previous/next keyframe buttons in the parameter panel, the play head does not always jump to the correct time but may be off by up to 4 frames.
Eberhard, did you every figure out a resolution to this problem?