Split screen with irregular

Hi,

Could someone point me in the direction of a tutorial on how to make a split screen using irregular shapes, triangles in particular, please? I want to use three time lapse sequences in separate triangular split screen areas.

In conjunct]ion with the titles tool (using triangle shapes), I can't figure out if I should use the Luma Key or the Track Matte Key.

Thanks.

Thanks Ann,

Any chance you could write out what to do a bit more fully, please? Am not advanced enough to follow that...

Make 2 of the 3 shapes seperately in the titler. OK.

Then after that?

"Track 3 mask", does that mean the third shape in the titler?

Check the resolution of the shape against the resolution of the sequence: they should be the same.

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