Sony MVS-8000SF User Manual page 124

Clip transitions
Linked to a mix (dissolve) or wipe transition, a frame memory clip (movie) is
played back.
Notes
The clip transition function is only supported on the MVS-8000A/8000G.
Cut
A cut switches instantaneously from the current video to the new video. When
the next transition is a key transition, the key cuts in or out instantaneously.
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Transitions