1. VLC
VLC is a powerful open-source media player developed by VideoLAN that supports a variety of audio and video formats, including MTS. It is known for its cross-platform compatibility, running on Windows, macOS, Linux, and mobile OS. VLC does not require the installation of additional codecs and offers a number of useful playback features, such as subtitle synchronization and the ability to change the playback speed. The player also allows you to stream videos online and convert files between formats. With a simple interface and regular updates, VLC is a reliable and convenient solution for viewing multimedia files.