I am trying to rotoscope the UCHAUL WALK from the hollywood camera work website- LINK…its the fourth footage from the top…the problem is no matter what frame i start at or whatever positions i keyframe for my roto mask, i still have to go in and adjust the mask on each & every frame…so i end up with a keyframe on every frame.the roto mask seems to stick pretty well to the girls motion but i am concerned if creating a keyframe for every frame will cause problems.Its also taking a very long time because of this. can anyone tell me what i am doing wrong? the video can be played on the site in the link provided. btw, here are a few screenshots at various positions. thanx for looking.
Rotoscoping this Footage...what am i doing wrong?
himadrism
#2
2nd try…now with fewer points…this time i added a keyframe at the start & then added another where i felt her stance drop slightly…for this reason i had to bring down my anchor points from the top considerably…even with lesser points, i can see that the roto mask has to be adjusted in each & every frame…is it because i had to bring down the points…should i have used transform & scaled down the mask to fit in place at the new frame? I am at a loss figuring out what to do…btw, the footage opens as an image sequence…could that be a problem?
beaker
#3
Usually with roto you want to start doing every 16th or 8th frame and then go in and add more inbetweens as needed, so start ad 4 and if there is a lot of motion go down to 2 and 1 where needed. Doing this will prevent jittering from doing ever frame one after another.
mamoworld
#4
You could try to rotoscope in a stabilized precomp using MochaImport.
Then you will definitely need less keyframes.
I show the technique in this tutorial at Creative Cow, where the enitre rotoscoping of the car needs only one keyframe:
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In the tutorial I use the Red Giant Warp Plugin. But note, that in the new version of MochaImport, you can also create stabilized precomps without the Warp plugin. See the cyborg arm tutorial at mamoworld, for example:
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