: This indicates the video resolution is High Definition (HD), specifically Ana Keith : The name of the featured model or performer.
: This is a unique production or catalog code, likely from a specific studio or content site (such as Reality Kings or a similar network) used to identify this specific scene in their database. [720p] Ana Keith - RM11649.mp4
: The standard digital video file format, compatible with most modern media players and devices. : This indicates the video resolution is High