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mocha pro camera solver going crazy when imported to mocha

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Assaf Goldlust
mocha pro camera solver going crazy when imported to mocha
on Nov 25, 2017 at 12:10:09 pm

im doing moca solve in mocha pro. in mocha its looks pritty good with accuracy of 98%

but when im importing it into after effect all the nulls are misplaced some of them are way to big and not alligned as set them to be.
and for some reasons to have keyframes (some of them actually moving in position).


also a good cupple seconds of the camera solve there is nothing happens.

any idear what the hack is going on?!


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Dave LaRonde
Re: mocha pro camera solver going crazy when imported to mocha
on Nov 25, 2017 at 4:11:28 pm

What kind of footage are you tracking? What kind of motion?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Assaf Goldlust
Re: mocha pro camera solver going crazy when imported to mocha
on Nov 26, 2017 at 8:45:50 am

i think i better show you.












i also checked the FPS its methes both in after effect and in mocha.
same for the place the key frames are placed in the timeline


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Mark Whitney
Re: mocha pro camera solver going crazy when imported to mocha
on Nov 26, 2017 at 3:29:14 pm

First off, simplify. Your first spline at the bottom center has all sorts of movement (cars) that will throw things off right there. There appears to be a section of road just to the right of that spline that seems to be clear that might be a better choice.

The last one at the top overlaps one or two other splines it appears but can't tell layer order in a 480 screen capture. That might be throwing it off too. Get rid of that thin horizontal spline; it's not contributing much as it sits.

Here's an older tutorial here that might give you some more ideas on this sort of shot:






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Assaf Goldlust
Re: mocha pro camera solver going crazy when imported to mocha
on Nov 26, 2017 at 5:40:13 pm

i tried the whole thing a again. i have noticed something weird
when i preform the track with no prespective its looks fine in after effect.
however its keeps the accuracy beneath acceptable. level (around 64%)

any idea the hack is happening?


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Martin Brennand
Re: mocha pro camera solver going crazy when imported to mocha
on Nov 26, 2017 at 10:46:32 pm

Keep in mind the AE redraw rate for overlays is poor, so unless you scrub the the timeline really slowly in AE is not going to show you them matching.

An easier way is to link the nulls to a solid so you can see if it is lining up correctly by playing back the clip in AE rather than scrubbing.

In terms of the scale, that's just how the camera solver works: It scales the null size based on the parallax of the camera. You can just shrink them down universally.

You also probably don't need that many tracks. More information is always helpful, but if one of those tracks is off, it's going to throw out the whole solve.

Martin Brennand | Product Manager | mocha - Imagineer Systems


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