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Thread: Partially hiding moving face

  1. #1

    Default Partially hiding moving face

    hi there,

    I have a short video where a man jumps hurdles, moving towards a standstill camera.
    I already replaced its face in the whole timeline but
    while he's moving towards the camera (camera is low, almost on the ground), the face becomes partially coverd by a hurdle for a moment and I don't know how to do it.


    I thought to make some kind of layer or mask in the shape of these hurdles so that my replaced face becomes hidden when it's need to be.
    Also when the man jumps the face becomes blurred so it'd be nice to apply some motion blur..

    Could You provide any suggestions how to do it, please?

    thanks!
    Last edited by kielbasa; 01-18-2015 at 11:36 AM.

  2. #2

    Default

    Can you post an example sequence and which video editor do you use? Probably look up rotoscoping and motion tracking.

  3. #3

    Default

    yes, sure, here it is

    https://www.youtube.com/watch?v=ZG3_I3zFB0U

    It's the fragment between 0:08-0:20sec.

    I'm using sony vegas pro.

    thanks

  4. #4
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    Default

    Your assumption and XXLRay's is correct.

    You would first need a track above the background track and the fake face track which contains just the hurdles (a mask would do that). You will need to move the mask on to match the movement of the camera. Vegas Pro does not have motion tracking so this will be a manual task.

    It would need to be manual anyway as you will need to adjust the mask for the rear hurdles when the subject (fake face)you want to appear in front of the hurdles does indeed do so.

    It would probably be easier to create a separate track/mask for each hurdle, but it's a manual job and there's no quick answer.
    Tim

  5. #5

    Default

    Thanks Tim,

    Do You maybe know any link, or tutorial where could be explained step by step how to do a similar task?

    The camera doesn't move, so I think that the task is easier. And as far as I know, vegas 12 does have a motion track option.
    Last edited by kielbasa; 01-18-2015 at 10:18 PM.

  6. #6
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    Default

    Quote Originally Posted by kielbasa View Post
    And as far as I know, vegas 12 does have a motion track option.
    No it doesn't. It has track motion which means one can move the image around at the track level - even in a 3D space (similar to pan and crop).

    Motion tracking where the image is moved based on the movement of a point or points within an image is a different thing altogether.

    Sorry to disappoint. I'm at work at the moments so cannot search for tutorials.
    Tim

  7. #7
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    Default

    Try this one for starters ...
    Tim

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