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Khanh32674585851a
Known Participant
November 12, 2023
Question

Shaky motion tracking in After Effects

  • November 12, 2023
  • 1 reply
  • 1821 views

Hi folks,

I have a video that I’m trying to stick a white solid to the null using motion track.

 

So I manually motion tracked because the video filmed with my Iphone is blurry, then I applied the track data to a Null, then placed the white solid into the video by parenting it to the Null. Made the Null and the solid layer into 3D (I made them 3D because I need to rotate the solid layer at some point). Then the solid gets shaky while playing back. I’ve tried applying Smoother to the Null, it helped just a bit, not much. I dont know what I’ve done wrong here.

 

For the context, my footage was 23.997 fps, I interpreted it to 24fps. Because the footage is blurry and out of focus, I manually motion tracked frame by frame. I attached 2 videos (the original footage and the one with the shaky solid) and a screenshot below.

 

The original footage: https://drive.google.com/file/d/1XI7W4Biesn1azmU-KgEEDDpyXlEEPzAT/view?usp=sharing

The shaky solid: https://drive.google.com/file/d/1lbRXaFb4X71F-nt2Mi18WjSjdYN3ovWb/view?usp=sharing

 

Any response would be appreciated!!!!

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    1 reply

    R
    Community Expert
    Rick GerardCommunity Expert
    Community Expert
    November 12, 2023

    You will have much better results if you track the footage in Mocha AE—just track position, scale, and rotation. It will take some track adjustments. You can also create the necessary masks in Mocha AE.

    I'm showing a shortened workflow and sharing a couple of project files. It needs a little more work to be perfect, but that's the approach I would take.

     

    K
    Khanh32674585851aAuthor
    Known Participant
    November 14, 2023

     

    Thank you for your response! I've tried Mocha track but based on the result, I'm not sure I followed what you suggested. In Mocha, I tracked Translation, Scale and Rotation and made some adjustment. Then I applied the tracking data (corner pin) to the white solid (the card). The white solid follows the track but in a weird way, especially I doesn't rotate at all. Do I need to rotate it manually? I tried doing it but it just made the solid floating around, messing with the track data.

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