Opus is a open and free audio codec for interactive speech and music transmission over the Internet. It is standardized by the Internet Engineering Task Force (IETF). With the features of Opus supports constant and variable bitrate encoding from 6 kbit/s to 510 kbit/s, frame sizes from 2.5 ms to 60 ms, and certain sampling rates from 8 kHz to 48 kHz, Opus is well suited both interactive and non-interactive applications.

MP3 is the most popular encoding format for digital audio which developed by the Moving Picture Experts Group for audio streaming or storage. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size. We know that .mp3 format is supported by almost all media players and portable devices.

  • Summary:
  • 1. Opus is as good or better than other lossy audio codecs like MP3, when competing against them in their sweet spot.
  • 2. Opus have better compression than MP3.
  • 3. Opus file format Support for both interactive and pre-recorded applications.
  • 4. MP3 is widely supported by all devices and software like iPod, iPhone, Sony Walkman, etc, but Opus is not compatible with most of media player.

Other Comparison: AVI vs XAVC / XAVC vs MP4 / XAVC vs MOV / MOV vs WMV / 3GP vs 3G2 / MP4 vs FLV / MKV vs MP4 / MP4 vs MP3

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