AC3 is an audio codec used for compressing multichannel sound, especially in surround sound systems. It is commonly used in DVDs, Blu-rays, and streaming platforms to deliver high-quality audio. AC3 files can store up to 6 channels of audio, making them ideal for cinematic and immersive sound experiences.
WMA is a digital audio format developed by Microsoft, primarily used for music and audio streaming. It offers high compression while maintaining good sound quality. WMA files are supported by Windows-based devices and media players, but are less compatible with other operating systems compared to MP3.