Does Exiftool change underlying MTS data?

[bobross]

This might be a silly question, but I wanted to ask. Does the FAQ statement (link below) on image quality also apply to MTS, MP4, and MOV files? Is the process essentially "lossless"?

https://exiftool.org/faq.html#Q13

[Phil Harvey]

MTS files have no metadata so ExifTool doesn't write them.  But rewriting MOV/MP4 is lossless.

- Phil