In professional archives, you might see _v2.mp4 to denote a second version or revision.
It does not correspond to:
As the "FHD" prefix suggests, the file is intended to be Full High Definition (1080p) . In this "exclusive" version, look for a high bitrate that minimizes compression artifacts in dark scenes, which is often a differentiator for "archive" quality versus standard web streams. fhdarchivesone448 2mp4 exclusive