10500503.mp4 -

Usually H.264 or H.265 (HEVC) video codec with AAC audio.

Since the extension is , the file likely uses the following standards: Container: MPEG-4 Part 14, the most universal video format. 10500503.mp4

Right-click the file and select Properties (Windows) or Get Info (Mac) to see the "Media Created" date, which often reveals the true origin. Usually H