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Fastest way to do “motion masking”
I’m trying to do a futuristic transparent table display where swiping my hands will show pictures and information (ie. In Ironman 2, Tony Stark displays Black Widow’s info and pictures using this table display).
I filmed one clip where the first few seconds was just the table alone, and the remaining duration had some objects (magazines, coke bottle, etc.) on the table and my hands movement swiping on the table. I plan to split the clip into two parts where the first part (table only with time frozen) will have the futuristic display on it and act as a “plate” for the second part, which will have the table objects and my hand movements.
I could manually mask the objects and my hands movement frame by frame (very time consuming). But I’m wondering, is there any effect or method that can speed this process up?
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7 Replies
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Trung
In such cases using Rotobrush Toolhelps you a lot.
Vishesh Arora
3D and Motion Graphics Artist
Films RajendraBlog:
https://digieffects.wordpress.comDemo Reel(3D):
https://www.youtube.com/watch?v=lHPgIJU_BR8Some contents or functionalities here are not available due to your cookie preferences!This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
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Thanks! Rotoscope is pretty awesome!
I have one problem though; it’s the fast hand movements causing the motion blur to throw it off. Would you suggest I include the motion blurred part of the hands in the “green” rotoscope area or just guess the approximate position of the hand without the motion blur? (I hope you understand what that means.)
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Also, I have a Neat Video’s Reduce Noise effect applied to the footage layer. In which order would the results be better: Reduce Noise first then Roto Brush, or the opposite?
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[Trung Nguyen] “Also, I have a Neat Video’s Reduce Noise effect applied to the footage layer. In which order would the results be better: Reduce Noise first then Roto Brush, or the opposite?”
You’re getting into a world of hurt here. These are both very memory/powerhungry plugins. I’d suggest rendering the clip out with Neat Video and then rotoing that.
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Trung
Tero is right. Render the footage with the Noise Reduction effect applied and then go for roto.
Vishesh Arora
3D and Motion Graphics Artist
Films RajendraBlog:
https://digieffects.wordpress.comDemo Reel(3D):
https://www.youtube.com/watch?v=lHPgIJU_BR8 -
IMHO any and all automated rotoscoping tools look good in tutorials and demonstrations, but when it comes to real footage with real problems, you’re not gonna get the results you want without doing it by hand.
If the rotobrush doesn’t get you where you need (or at least mostly where you need) I would recommend piping the footage into a program designed for rotoscoping (like Silhouette) because roto’ing in AE is bruuuutal.
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Rotoscroping in AE does a good job for the most part, but when the footage has fast motion blur, it really messes up badly. I agree with you about the brutal part.
I might give Silhouette a try if the end result doesn’t look good. Thanks for the suggestion.
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