Camera Tracker fails to keep text in place to end of clio

Question

Hi, I'm having a nightmare with this issue as it's so specific and happens on every clip I try.

I'm using 120fps footage that I've slowed down to 25% in PP. Then I export the 3-4 seccond clip to AE by right clicking and choosing to replace with an AE clip. It then loads AE and I begin to use camera Tracker and select the markers that remain throughout the clip. Then I add text to the marker selection and reorient it to be exactly how I want it.

So far so good....

Then when I play the clip it tracks perfectly for 80% of the clip, and then the last 20% the text begins to slide along with the motion of the camera. It's as if the tracker just stops to soon.

When I look at 3d motion tracker in the composition pannel I can see there are keyframes set and the final keyframe is right where the tracking seems to stop.

This happens on every clip I've tried this on and it's driving me mad. I can't find any one else having this very particular issue and I can't find a way around it.

Please, does anyone have any idea what could be going on?

Thank you

Ryan

Mylenium · Answer

Without any specific info on your clips, your project settings, your system and so on we can't tell you much. That aside the workflow is just wrong. You track first, then slow down the entire project. That alone could explain some of your issues since "smearing the pixels" would introduce imprecision that multiply over time and any framerate mismatches could exacerbate the issue further. Either way, you have to be more specific and provide the necessary info.

Mylenium

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