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thegoodhen / AprilTools

A marker-based camera tracker for Blender based around the AprilTags Library by University of Michigan
GNU General Public License v3.0
253 stars 29 forks source link

Key frames missing from imported marker #19

Open Londonisfalling opened 5 years ago

Londonisfalling commented 5 years ago

Once the marker is imported from the tracking text file into Blender, the key frames appear to be missing, and as a result, the tag cannot be tracked.

Using fresh Blender 2.80 (With AprilTools add-on) Deleted and re downloaded AprilTools Remade tracking file, all commands returned with no error Tracking file does contain coordinates

rizerphe commented 5 years ago

Did it loose all of the keyframes or are only frames that no marker is found on missing?

Londonisfalling commented 5 years ago

Did it loose all of the keyframes or are only frames that no marker is found on missing?

All key frames are lost.

FiliSh-m commented 5 years ago

Same here, it creates the camera and marker, but they aren't moving although the camera has green fields with position values. Also when solving the camera in apriltools.exe it said on every frame: Error, more than one new minima found.

Londonisfalling commented 5 years ago

UPDATE: I got a laptop that I don't really use, installed fresh Windows 10, fresh Blender 2.80, and tried importing again. I did everything start to finish with the same footage on the new machine and it worked just fine. No problems what-so-ever. I can't say for sure what part of my desktop's Win 10 was having problems, as I have many programs and changes. If any of you come across the same problem, i guess you could back up your files, reinstall Win 10, adding Apriltools and Blender first, then gradually restore previous programs, checking if importing works each time.

Londonisfalling commented 5 years ago

Root of problem found: When creating a sequence from the original video, make sure that the name for the images does not end in a number. Good name: videosequence Bad name: videosequence4 This matters due to the sequencer appending file numbers for frames, which will cause problems later if the 50th frame gets read as the 450th frame due to your added "4" in the name. I hope that makes sense.

thegoodhen commented 4 years ago

I'll still fix it. Things are hopefully settling for me now, so I hope to be able to develop something during the Christmas break.

FiliSh-m commented 4 years ago

Well, it's not that bad, you just have to be careful about naming your files. However what is that Error, more than one new minima found. message while tracking? I get it all the times now.