Convert OPUS to AC3 online for free
1: Choose multiple local OPUS files or enter the URL of an online OPUS file. 2: Choose "AC3" as target format and set options. 3: Click the "START CONVERSION" button to convert OPUS files to AC3 online.
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Opus Audio Format
File extension: .opus
Opus is a lossy audio coding format developed by Xiph and standardized by the IETF, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low end ARM3 processors.
Audio Codec 3
File extension: .ac3
Dolby Digital, originally synonymous with Dolby AC-3, is the name for what has now become a family of audio compression technologies developed by Dolby Laboratories. Formerly named Dolby Stereo Digital until 1995, the audio compression is lossy (except for Dolby TrueHD), based on the modified discrete cosine transform (MDCT) algorithm.