Use VLC Media Player or MPC-HC , as these handle older MP4 encoding formats and high bitrates most reliably.
This is likely an internal site ID or a sequence number from a specific content network (such as MyFreeCams or a similar archival site) used to track individual sessions or uploads. If you are looking to manage or identify this file:
This date marks a transitional period in digital media where 720p (High Definition) was becoming the standard for web downloads, replacing lower-quality 480p formats.
Emjay (often associated with "cam girl" archives or early 2010s web-based adult content).