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Need advice on TV screen replacement (AE/Mocha,etc.)

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Richard PilawskiNeed advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 22, 2015 at 1:00:52 am

I'm having problems with capturing the tracking for this shot for screen replacement.
The video can be watched here: http://tinypic.com/r/2eai0cz/8

It involves replacing a CRT TV screen with video footage, but:

1) the TV in the shot does not have a green screen on it, nor does it really have sharp/distinctive corners to pin to (not flat screen).
2) The TV is also turned on and playing snow the entire time which is messing with recording the tracking.
3) 5 small pieces of tape are attached to it, these seem fairly useless to me (?) especially with the snow moving around them.
4) The actor on the left partially blocks the TV when putting in the VHS tape.

Any advice? Thank you.


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Kalle KannistoRe: Need advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 22, 2015 at 7:07:39 am

Since there is no perspective change, just a zoom in, you could get away tracking just one point, attaching a screen-shaped mask to it and doing the scaling keyframes manually. People in front of the screen will have to be rotoed.


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Richard PilawskiRe: Need advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 22, 2015 at 7:32:06 pm

Thank you Kalle, I'll try that.


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Chris TomberlinRe: Need advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 22, 2015 at 7:12:39 pm

Richard,

I can do this for you if you're still having trouble. Contact me at chris_at_outpostpictures.tv

Thanks

Chris Tomberlin
Color/Finishing
Outpost Pictures


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Richard PilawskiRe: Need advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 22, 2015 at 7:32:56 pm

Thank you Chris, I appreciate the offer, but I need to figure this out so I know how to do it myself.


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Ross ShainRe: Need advice on TV screen replacement (AE/Mocha,etc.)
by on Jun 24, 2015 at 6:13:25 pm

The key to this kind of solve with mocha is to use multiple shapes on 1 layer with the X+ button.

Isolates various areas of the screen that are not obscured by the actor AND avoid all the static by making some very small shapes around your track marks.

I would draw a shape arounds the screen edges and avoid the reflections. You can either add a 2nd layer on layer 2 to mask out the actor OR simply animate your search areas to avoid the actor.

It should not be a challenge for mocha.

Ross Shain
Imagineer Systems
http://www.imagineersystems.com


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