How to hide an outfit change at the bottom of a bend
Give Vizard Agent both takes and say which movement should hide the change. It finds the lowest point of the bend in each take and lines up the room if the phone moved between them. Then it cuts straight from one take to the other and checks the join frame by frame for a repeated dip.
What do you type into Vizard Agent?
Say which take comes first and what the movement is. Film the second take copying the first one's speed and depth as closely as you can. Small differences in where the phone stood are fine, because Vizard Agent can match the background, but the move itself has to be the same.
Join these two clips so it looks like I bend down in my home clothes and come back up already dressed up.
What does Vizard Agent actually do?
It treats the join as a straight cut that has to disappear, not as a transition effect. The head must be at the same height on both sides of the cut, and the room must not jump, even though the two takes were filmed about half an hour apart. In the session behind this article it:
- Made timestamped strips at ten frames a second around the bend in both 6.9-second takes, to find the lowest point in each.
- Matched background features between the two frames at the cut, found the phone had moved by about a tenth in scale plus a shift, and warped the second take to line up with the first.
- Gave both takes the same slight crop, so the edges of the warped picture never show.
- Caught a doubled dip in its first version: the person reached the bottom in one take, reappeared higher in the other and dipped again. It moved both cut points by 0.15 seconds.
- Checked the corrected join on a strip at 15 frames a second and the sound as a waveform before delivering. The user moved straight on to adding a title.
When does this not work well?
When the two moves are very different. If one bend is fast and the other slow, or the head drops in a different part of the frame, no cut point lines them up. Then the only fix is another take, filmed to copy the first one's speed and depth.
Common questions
Do I need a tripod? It helps. Vizard Agent can match a phone that moved slightly.
Why not use a flash or spin? Vizard Agent hides the cut inside the movement instead.
What if the move looks doubled? Vizard Agent shifts the cut points until it doesn't.