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E
ElsieG!
Participant
November 9, 2022
질문

How to pin/still a moving object belonging to the background of the clip?

  • November 9, 2022
  • 2 답변들
  • 404 조회

Sorry, I am new to after effects and still have a lot to figure out, I can't find a solution to this problem. I need to fix a mistake that happened during a shooting, as it turns out during a dolly, a picture on the background slanted right (moved) while the subject was in front of it which distracts the audience from the performance. Therefore, I was wondering how to pin the picture so it looks like it didn't move, it appears to me that I have to use some trackers since the camera is in constant movement but I don't know how to go about this. Whoever has an answer to this, I would really apreciate it. Thanks in advance. 

이 주제는 답변이 닫혔습니다.

2 답변

Mylenium
Mylenium
Legend
November 11, 2022

Yes, this could be very tricky. I'd likely try to replace the complete wall by masking it out and re-create it from photos, then animate the parallax. 3D tracking might help to get the motion, but wouldn't necessarily be required.

 

Mylenium 

Mylenium
Mylenium
Legend
November 9, 2022

A screenshot of the issue would help. The most likely solution is to indeed track the frame and do a full replacement by e.g. overlaying a fixed up still frame, but exact advise would really require to see what's going on. Could be a single point track to "pin" a static image, could be something more complicated involving 3D camera tracking or multiple corner pins...

 

Mylenium 

E
ElsieG!작성자
Participant
November 10, 2022

 

Thank you so much for your answer! Here is what's going on. The camera continously moves to the right until at one point you don't see the picture anymore but the issue is when you do see it (on big screen is really noticeable). One other concern of mine is the shadow casted on the picture since a static image is gonna erase it but I'll try it out. Either way I do think I'll have to do a 3D Camera Tracking since there is diagonal camera movement moving dolly right and back.

 

 

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