You can not make rounded corners in the DVE alone...
You could use a split key with a MASK ... this will take two DVEs as it has to fly a Video+Alpha ..
Here is an example -- load it into the Media Store and then do a split key with the Video source you want in the Box.
https://www.dropbox.com/scl/fi/9ngw2v8yc0t78tkwjob45/rect-round_0000.tga?rlkey=czlrc3oznhi72fzoiv3bejyn4&dl=0
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Les O'Reilly
Director - Switcher Product Management
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