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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| SDP - Glossary | MDN | 1/3 | https://developer.mozilla.org/en-US/docs/Glossary/SDP | reference | web, html, css, javascript, documentation | 2026-05-05T05:43:34.037830+00:00 | kb-cron |
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SDP
SDP (Session Description Protocol) is the standard describing a peer-to-peer connection. SDP contains the codec, source address, and timing information of audio and video. Here is a typical SDP message:
v=0
o=alice 2890844526 2890844526 IN IP4 host.anywhere.com
s=
c=IN IP4 host.anywhere.com
t=0 0
m=audio 49170 RTP/AVP 0
a=rtpmap:0 PCMU/8000
m=video 51372 RTP/AVP 31
a=rtpmap:31 H261/90000
m=video 53000 RTP/AVP 32
a=rtpmap:32 MPV/90000
SDP is never used alone, but by protocols like RTP and RTSP. SDP is also a component of WebRTC, which uses SDP as a way of describing a session.
In this article
See also
- WebRTC protocols
- Session Description Protocol on Wikipedia