Unified Plan

Unified Plan is an IETF draft proposal for signaling multiple media sources in SDP.

Signaling multiple media sources is needed to be able to send a video along with screen sharing, multiple camera sources or routing multiple streams from an SFU to the users.

In Unified Plan, there is an m= line per each media source.

The mechanism chosen for the official WebRTC specification is Unified Plan. The competing approach is known as Plan B.

Firefox already supports Unified Plan. Chrome is expected to implement it in the future.

About WebRTC Glossary

WebRTC Glossary is a collaborative space where users can learn more about WebRTC related terms. Anyone can also modify or add new terms to this glossary, but it requires registration to the site first.