OPUS is a lossy audio format created by the Online Engineering Task Force (IETF) with the goal of supporting internet streaming. Since the OPUS codec is mostly used for streaming, the OPUS extension encoded with the OPUS codec is rare.
The OPUS extension, which is easily switchable between high and low bit rates from 6 kbps to 510 kbps, is modelled after both the CELT codec and Skype’s SILK codec. This codec is frequently used for voice over IP, video chats, video conferencing, and a variety of other uses.
list of programs that can open OPUS documents:
- VideoLAN VLC Media Player
- OPUS tools