Development discussions and questions take place on the Xiph.Org Opus mailing list ( Discussion related to the IETF process happen on the IETF mlcodec working group mailing list (

For archives of recent discussions, try:

Informal development chat and support happens in #opus on You can join the chat room through this web page if you don’t have an IRC client.

If you find a bug, please report it in gitlab.

For anything non-confidential (e.g. general questions about Opus), please use one of the mailing lists above. For confidential enquiries only, you can contact one of the following developers directly: