I have been trying to find a method to enable or disable (switch off and on) an effect using keyframes and I cannot find a solution. I'm hoping somebody has a method to do this. The situation is simple, I have a long clip with an effect applied. What I want to do is to be able to toggle the Effect off and on using a keyframe. This would be like checking and unchecking the Effect in the Video Effects Inspector. The effect has many parameters with keyframes and there is no one setting like "Opacity" or "Mix" I can use to turn off the effect. Any suggestions would be greatly appreciated.
Thank you for your insights and ideas. The "Blade" approach is the best since the Effect includes transformations (position and scale) that need to be disabled. I am always surprised when I run into a missing capability that seems to obvious. Prior to posting I read the manual, searched help forums and the net...
I also had this issue and the section named " Add keyframes automatically across a selected area" on this page support.apple.com/en-gb/guide/final-cut-pro/ver8e3f20ea/mac solved it for me. I wanted to apply an earthquake effect to a clip that had a speed gradient (the blade method invalidates this).
It works perfectly to reduce the earthquake effect a few seconds into the clip whilst maintaining all the remaining effects.