GoPro LRV and THM Files Explained in 1 minute
https://projectgo.pro/gopro-thm-file22.10.2020 · The .LRV files can be used to Copy, Playback, and Share the files in the GoPro app. These files take up almost 5% of the storage space as the original .MP4 files. They not only speed up the playback process and save storage space, but also increase the computing power required to edit a video compared to the HD file.