There were some pandas data manipulations at a few stages of the calibration process which were quite inefficient, with exponential increases in processing time as camera count increased. With 5 or 6 cameras, it was manageable, but with 10+ was clearly not practical.

This pandas code was refactored (hat tip to claude) and is now substantially faster. If someone had issues with slow calibrations in the past, my hope is that v0.6 will be a much better experience.

Mediapipe 0.10.1 is no longer available via PyPI it seems. I have updated the pinned version to the most recent available patch (0.10.20) which tests successfully across Windows/Linux/MacOS.

My recollection is that there were patches of Mediapipe 0.9 that failed on MacOS (some worked, some did not). Uneasiness about this led me to pin to a specific patch that I knew worked.