2022-10-21_0h7cyypp746tm5e0mbwhz_source.mp4 -

: Indicates this is the original high-resolution version of the file, as opposed to a transcoded or compressed version used for streaming.

Similar strings are often found in browser network logs (e.g., Chrome's videotoolbox or vtdecoderxpcservice logs) when a video is being buffered or exported. 2022-10-21_0h7cyypp746tm5e0mbwhz_source.mp4

: This specific naming format (Date + Unique ID + "_source.mp4") is common when a user downloads their own data via services like Google Takeout or exports a "source" file from a professional video hosting service. : Indicates this is the original high-resolution version