G4_0156.mp4

Researchers often label video files with group codes (e.g., Group 4, Clip 156) for identification in studies involving computer vision, behavior analysis, or forensic video analysis .

MP4 (MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio, but it can also store other data such as subtitles and still images. g4_0156.mp4

If you are looking for technical information regarding the format itself: Researchers often label video files with group codes (e