Thx for the response!
Background of this is: We do projectionshows with live-spoken synchronized parts in it. Since we are using different projectors from time to time, we need to calibrate our footage on screen, but NOT the part underneath the video (which contains the timecode and additional infos for the artists), which goes to a different output-slice then.
A Kings-Way would be to put a SINGLE »Levels«-Plugin with ONE single adjustment to the Composition and do the Calibration just for one time for all playing stuff at once (and NOT for every clip in additional layers).
Maybe an other possibility: Can I direct an effect (»Levels«) to a specific Output-Slice?
If so, how?
Thx in advance