It changes only text-based metadata headers. Your video files remain completely untouched, ensuring zero quality loss.
Runs as a portable .exe file requiring no formal installation or heavy system resources. Step-by-Step Guide: How to Use BDMV Modifier 2.0
While essential for "normal" Blu-ray folders (1080p), it is often noted as unnecessary for Ultra HD (UHD) Blu-ray folders on certain updated firmware. Context within Blu-ray Authoring
What are you targeting (e.g., PS5, older Sony deck, Panasonic)?