ADOBE AFTER EFFECTS: Forum Expressions Tutorials Podcasts Creative Cloud

Problem Rotoscoping Footage using a Mask

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Brian RichardsonProblem Rotoscoping Footage using a Mask
by on Feb 20, 2013 at 6:54:54 pm

I have an AE CS6 masking problem and hope someone can help...

I am rotoscoping some movie footage (into my project) using a mask. Once I have finished going frame by frame, I find that on occasion, the mask will randomly offset its original intended position by a few pixels. Even after re-adjusting the mask, I find that the mask continues 'adjust' and I am wondering if anyone else has ever come across this?

Other things worth mentioning;

1. The frame rate of the movie footage and my composition match.
2. The number of vertices remains constant between frames.

Brian R

Return to posts index

Dave LaRondeRe: Problem Rotoscoping Footage using a Mask
by on Feb 20, 2013 at 10:19:14 pm

Are you ANIMATING the Mask path property with keyframes? I imagine you are, but you don't say for sure.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

Return to posts index

Tom DaigonRe: Problem Rotoscoping Footage using a Mask
by on Feb 20, 2013 at 10:26:15 pm

If you dont resolve the problem, you might want to consider using Mocha AE which comes with AE and rotoscopes extremely well. Do learn to use it from tutorials at the Mocha website before attempting it on your project for best results.

Tom Daigon
PrP / After Effects Editor

(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid

Return to posts index

Vishesh AroraRe: Problem Rotoscoping Footage using a Mask
by on Feb 21, 2013 at 3:40:21 am


Make sure you select the Layer while animating the Mask Path and not the Mask itself. If you select the mask and then move any vertex, whole mask will move instead of one vertex.

Also a screenshot of what you are doing would help.

Vishesh Arora
3D and Motion Graphics Artist
Films Rajendra


2011 3D Demo Reel:

Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2016 All Rights Reserved