in animation select the camera/position channels
on the right side of the channels window you find a blue pulldown with an average option
select this & adjust the number next to it
you should see the channels interactively straightening ...
on the other hand, im not sure, if this will give you the desired result for your issue -
camera trackings seem to be much more complex than 2d tracks (obviously ;-)) - & playing around with the curves after the analysis may give completely messed up results ...
still it may be worth a try
It was a bit more tricky to find it, but actually you're absolutely right - it's far more complex to adjust the 3d cam this way ))) In this particular case it was actually the opposite case - camera was shaking a bit more then the tracker was able to pick it's motion up.
To average a channel:
Select a channel or group of keyframes.
In the Curve Functions box in the Keyframe tab, select Average.
In the Curve Value field, specify a value.
The jitter is removed from the spline animation.
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