AC3 is a digital audio format developed by Dolby Laboratories. It is commonly used in surround sound systems in movie theaters, DVDs, and Blu-ray discs.
On Mac, AC3 is often used as a standard audio format for DVDs and other media files that require surround sound. The AC3 format is supported by many media players and software applications, including Apple's QuickTime player, VLC media player, and Adobe Premiere Pro.
More: https://mac.eltima.com/ac3-audio-player.html
However, in recent years, Apple has phased out support for AC3 in its software and devices, opting instead for its own audio format, AAC. As a result, some Mac users may need to install third-party software or use older versions of media players to play AC3 audio files.
Overall, if you're working with media files that require surround sound on a Mac, it's worth checking whether your software supports AC3 or if you need to convert your audio files to a different format.
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