--- title: SDP slug: Glossary/SDP translation_of: Glossary/SDP original_slug: Глоссарий/SDP --- <p><strong>SDP </strong>(Session Description {{glossary("Protocol")}} - протокол описания сессии) - это текстовый формат для описания {{Glossary("P2P","peer-to-peer")}}-соединения. SDP содержит описание {{Glossary("кодеков")}}, адрес источника и информацию для синхронизации аудио и видео.</p> <p>Here is a typical SDP message:</p> <pre> 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</pre> <p>SDP is never used alone, but by protocols like {{Glossary("RTP")}} and {{Glossary("RTSP")}}. SDP is also as component of {{Glossary("WebRTC")}}, which uses SDP as a way of describing a session.</p> <h2 id="Learn_more">Learn more</h2> <h3 id="General_knowledge">General knowledge</h3> <ul> <li><a href="/en-US/docs/Web/API/WebRTC_API/Architecture/Protocols">WebRTC protocols</a></li> <li>{{Interwiki("wikipedia", "Session Description Protocol")}} on Wikipedia</li> </ul>