Focal Length Estimation -1 px

[boulanger97]

I'm having trouble getting a focal length estimation. I'm using a perspective shot as recommended. The program recognizes the tag but cannot estimate focal length. My tag is also not printed an on an iPad screen. Not sure if that is supported or would cause any issues.

[boulanger97]

Didn't see #6 Ill try that

[boulanger97]

Here is the footage in case that helps

[circles-png]

I have that problem too.

[RatDotRaw]

i had the same problem, I just gave it more frames to calculate and it worked out. like a lot more frames, about 2000.
at the end you can film more than you need.