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: The audio codec (Advanced Audio Coding). It provides high-quality multi-channel sound while being more efficient than older formats like MP3. Why This Version is Considered "Best"

There is a natural film grain present that preserves the gritty, cinematic feel without becoming "noisy" or distracting. descent20071080pblurayh264aac best

Alternatively, it may refer to the 2007 rape-and-revenge thriller : The audio codec (Advanced Audio Coding)