In short, "Lsm13 01 02 mp4" is likely the second part of the first lesson in a series about or Live Replay systems .

It is a universal "container" that stores video, audio, and subtitles, making it playable on almost any smartphone, tablet, or PC.

Depending on the field, this file name often appears in the following contexts:

MP4 uses codecs like H.264 to shrink large video files into manageable sizes for downloading or streaming without a significant loss in quality.

In the television industry, LSM (Live Slow Motion) is a proprietary system by EVS. Files with this naming convention are often training modules for the LSM-VIA remote panel, used by operators to create replays and highlights during live sports.