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Roto Brush propagating every frame in CC2020

Community Beginner ,
Mar 26, 2020 Mar 26, 2020

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Hi all,

I've been running into this really frustrating behaviour with the roto brush recently.

Basically I can only do one or two actions before the entire timeline re-propagates. It used to be that it would only propagate the frames after the stroke keyframe (in the direction of propagation), allowing you to iterate along the timeline easily. This current behaviour is unworkably slow. Any idea why it's doing this?

 

• Archie •

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Error or problem , Performance

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LEGEND ,
Mar 26, 2020 Mar 26, 2020

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I beleive there is a known bug that still hasn't been fixed. Regardless, I think your footage would still be problematic and not necessarily propagate more favorably. Perhaps you might want to explore methods liek tracking masks - with or without mocha.

 

Mylenium

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Community Beginner ,
Mar 26, 2020 Mar 26, 2020

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Oh it's propagating fine - just very, very tediously.

 

Is it a project by project bug? I've never seen it before.

 

 

The mocha track isn't going great as the reason I'm having to mask these windows out is they're extremely reflective. The tracker gets all kinds of confused. 

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Community Expert ,
Mar 26, 2020 Mar 26, 2020

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You don't need to mask every window in Mocha, you just have to grab one of the corners, then add another spline to the layer and grab another corner or two, then run the track.

 

If this were my shot this is how I would set up a track for the building:

Screenshot_2020-03-26 11.35.38_cKT0kN.png

This will give you a clean track of the building very quickly.

Screenshot_2020-03-26 11.40.30_Whc13z.png

If the goal is to separate the building from the background then a second simple spline linked to the track (layer 1) can be created in just a few minutes. 

 

I don't know what your design goals are but Rotobrush would be my last choice for creating a matte for anything I see in this shot.

 

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Community Beginner ,
Mar 30, 2020 Mar 30, 2020

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The tracking is the problem. I'm trying to get a clean 3D camera track of this shot coming out of the balcony doors. The glass reflections on the opposite buildings are throwing it off massively, so I need to mask out all of the glass. Linked mattes in mocha might be a good shout, but it still doesn't explain why the roto brush is behaving this way. Would be good to find a solution for future google searches.

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Community Beginner ,
Feb 08, 2023 Feb 08, 2023

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LATEST

 

The problem is the Roto brush

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New Here ,
Feb 10, 2021 Feb 10, 2021

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hey uhm I have been facing the same problem 😕 

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New Here ,
Feb 23, 2021 Feb 23, 2021

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This was happening to me and I realized one of my layers accidentally had the fx turned on. When I turned it off, it stopped propogating.

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New Here ,
May 24, 2021 May 24, 2021

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How do you take the FX off of your layer? 

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Explorer ,
Jun 05, 2021 Jun 05, 2021

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Just turn off the "fx" and turn it back on. 

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Community Beginner ,
Aug 31, 2022 Aug 31, 2022

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I can't seem tofind that FX button, is it available in CS5.5?

Do I need to be in the composito or layer mode?

 

thanks

 

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Explorer ,
Jun 05, 2021 Jun 05, 2021

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Hey! THANKS A LOT! This is the answer. 

Im sitting here since days, and now Im back what you can call a work FLOW. 

Your answer should be pinned!

Thumbs up bro! 

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New Here ,
Jun 23, 2021 Jun 23, 2021

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thank you

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Community Beginner ,
Feb 08, 2023 Feb 08, 2023

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ADOBE -

instead of eight tracking features/methods with sub-par performance...

how about ONE tracking feature with ok or even just predictable performance!?

 

I mean, you're not designing a version of a douchey guy that can fake his way through a bunch of first dates - ya know by seeming to know a little about a lot of different things... having the information not cuz the subject is important to him, but becuz it might just get him  laid? ..... wait . sh*t.. you sort of are doing that. aren't you??

 

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