What's format of xml file for internal parameters

[davidu]

When you load images with known parameters, you could use an xml file containing a single calibration for loading internal parameters, instead of a txt file containing bunch of lines of parameters per each image. What's expected format for this xml?

[Andrea Alessi]

You can use the xmp format (which are pretty much xml files) using the workflow shown in this quick tutorial: https://www.youtube.com/watch?v=d0Q4ZBorKRU