Motion tracking jitters
by Ken Pugh on May 11, 2012 at 7:43:56 pm
I'm using motion tracking to tie text to objects in a moving frame.
I seem to get a much smoother track in Apple Motion - After Effects tracking seems to 'jitter' the text between one pixel and the next, giving a small random 'shake', particularly when the frame is fairly still. It's like it's constantly moving back and forth between two pixels (tried turning sub pixel off). I find I'm having to do the track in Motion and import the text into AE for the compositing and masking (as I much prefer these tools in AE). I've tried many solutions, played with all the tracking options, tried the smoother, tried manually adjusting frames a pixel back and forth (that way madness lies) but no luck. Is there a technique for this I'm missing?
There are many tutorials on AE tracking. I would recommend checking out Mocha (free version with AE)- it does a superb tracking job on most clips.
One question regarding your footage- is it interlaced or progressive?
All I had to do was to perform a single track of the plane where the markers were placed. Once the track was done, all I had to do was to move mocha's Surface Area (to select either an area or a marker)and export either Perspective or Transform data.
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Re: Motion tracking jitters by Ken Pugh on May 12, 2012 at 9:22:46 am
Thanks for both these replies - I'm using interlaced footage - and to make matters worse, some of the clips are being re-sized.... however Motion still does a smoother job. I've been looking for a way to manipulate the tracks, and average them out, as this felt it could be a solution - sounds like Mocha might be perfect, I'll explore this further, and check out the tutorial.