Before using the tool, it's helpful to understand the format it works with. is Sony's proprietary audio compression codec, used in modern PlayStation hardware (PS4, PS Vita, and PS5). You'll find *.at9 files in many PS4 and PS Vita game dumps.
: It is heavily utilized on the PlayStation Vita , PlayStation 4 , and PlayStation 5 .
Before using the tool, it's helpful to understand the format it works with. is Sony's proprietary audio compression codec, used in modern PlayStation hardware (PS4, PS Vita, and PS5). You'll find *.at9 files in many PS4 and PS Vita game dumps.
: It is heavily utilized on the PlayStation Vita , PlayStation 4 , and PlayStation 5 . at9tool.exe