Released primarily to support the hardware, this version introduced:
Version 8.4.5 was designed for older operating systems and may not function on modern hardware. Downgrading to High Sierra for Media Composer 8.4.5
Avid recommends that all users keep local copies of installer files on a hard drive for safekeeping, as legacy versions are frequently retired. Key Features of Version 8.4.5
The 8.4 cycle introduced the ability to create projects with custom frame sizes, moving beyond standard HD/SD. System Compatibility & Hardware Requirements
Only version 2023.8 and newer, and specific Long-Term Maintenance (LTM) versions like 2022.12.5 and 2021.12.10, remain available. How to Access Avid Media Composer 8.4.5
Some users report success finding older versions via the Avid Link application, which manages licenses and updates directly on your machine.