GX010048.MP4 as an example):GX: always the same. Can be used as a simplistic way to identify a video in video mode taken on the HERO10.10: (first 2 digits) the camera breaks videos longer than a certain size/length into separate files (see chaptering). Increases by one with each chapter recorded. For example, a 9 minute video would be split into 3 files (GX010048.MP4, GX020048.MP4, GX030048.MP4).0048 increases by one with each new video shot (i.e. user stops one video and starts the next). e.g. GX010048.MP4 and GSGX010049.MP4 are two distinct videos.GOPR0056.JPG as an example):GOPR : always the same. Can be used as a simplistic way to identify a HERO photo taken on the HERO10 in single photo mode8586: count of the photo (increments by 1 each time between 0000 - 9999)GG010059.MP4 as an example):GG: always the same. Can be used as a simplistic way to identify a video in photo liveburst photo mode taken on the HERO10.01: (first 2 digits) the camera breaks videos longer than a certain size/length into separate files (see chaptering). Increases by one with each chapter recorded. For example, a 9 minute video would be split into 3 files (GG010059.MP4, GG020059.MP4, GG030059.MP4).0059 increases by one with each new video shot (i.e. user stops one video and starts the next). e.g. GG010059.MP4 and GG010060.MP4 are two distinct videos.G0020061.JPG as an example):G0: always the same. Can be used as a simplistic way to identify a photo in burst photo mode taken on the HERO10 (beware: also used for timelapse)02: (first 2 digits) the camera breaks the photos in the burst using the same first digits. e.g. G0020061.JPG, G0020063.JPG, G0020062.JPG were all in the same burst. But G0020061.JPG, G0030062.JPG are photos from two separate photo burst executions.0061 increases by one with each photo in the burst.GX010141.MP4 as an example):GX: always the same. Can be used as a simplistic way to identify a video in photo liveburst photo mode taken on the HERO10.01: (first 2 digits) increases by one with each new timelapse shot, or if video reaches chaptering size.0141 increases by one with each new photo in the timelapseG0090125.JPG as an example):G0: always the same. Can be used as a simplistic way to identify a photo in timelaps mode taken on the HERO10 (beware: also used for single photo burst)02: (first 2 digits) increases by one with each new timelapse shot0061 increases by one with each new photo in the timelapse.thm files are JPG thumbnails (THM) used by GoPro software as a still photo preview of the video. They’re tiny files (usually less than 100Kb), typically with a resolution of 160 by 120 pixels..lrv files are Low-Resolution Video (LRV) files are used by GoPro software to display video previews, without having to load the high-resolution version.HERO10 Black, HERO9 Black, HERO8 Black, MAX, HERO7 Black, HERO6 Black, Fusion, HERO5 Black & HERO5 Session, HERO4 Black & Silver, HERO (2018)