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Line 2: The [[Real-time Transport Protocol]] (RTP) specifies a general-purpose data format and [[network protocol]] for transmitting digital media streams on [[Internet Protocol]] (IP) networks. The details of media encoding, such as signal sampling rate, frame size and timing, are specified in an '''RTP payload format'''. The format parameters of the RTP payload are typically communicated between transmission endpoints with the [[Session Description Protocol]] (SDP), but other protocols, such as the [[XMPP\|Extensible Messaging and Presence Protocol]] (XMPP) may be used. ==~~Audio~~Payload types and ~~video payload types~~formats== The technical parameters of payload formats for audio and video streams are standardised. The standard also describes the process of registering new payload types with IANA. Line 9: * {{Sum RFC\|3611\|ref=yes}} * {{Sum RFC\|4856\|ref=yes}} Additional payload formats and payload types are defined in the following specifications:▼ ==Text messaging payload types==▼ Payload formats and types for text messaging are defined in the following specifications: * {{Sum RFC\|4103\|ref=yes\|notes=yes}}▼ * {{Sum RFC\|9071\|ref=yes}}▼ ==MIDI payload types==▼ ▲~~Additional payload~~Payload formats and ~~payload~~ types for [[MIDI]] are defined in the following specifications: {{Sum RFC\|6295\|ref=yes}}▼ {{Sum RFC\|4696\|ref=yes}}▼ ==Audio and video payload types== Payload formats and types for audio and video are defined in the following specifications: * {{Sum RFC\|2029\|ref=yes}} * {{Sum RFC\|2190\|ref=yes}} * {{Sum RFC\|2198\|ref=yes}} * {{Sum RFC\|2250\|ref=yes}} * {{Sum RFC\|2343\|ref=yes}} * {{Sum RFC\|2435\|ref=yes}} * {{Sum RFC\|2586\|ref=yes}} * {{Sum RFC\|2658\|ref=yes}} * {{Sum RFC\|3190\|ref=yes}} * {{Sum RFC\|3389\|ref=yes}} * {{Sum RFC\|3497\|ref=yes}} * {{Sum RFC\|3640\|ref=yes}} * {{Sum RFC\|3952\|ref=yes}} * {{Sum RFC\|4175\|ref=yes}} * {{Sum RFC\|4184\|ref=yes}} * {{Sum RFC\|4352\|ref=yes}} * {{Sum RFC\|4587\|ref=yes}} * {{Sum RFC\|4598\|ref=yes}} * {{Sum RFC\|4629\|ref=yes}} * {{Sum RFC\|4733\|ref=yes}} * {{Sum RFC\|4749\|ref=yes}} * {{Sum RFC\|4788\|ref=yes}} * {{Sum RFC\|4867\|ref=yes}} * {{Sum RFC\|5188\|ref=yes}} * {{Sum RFC\|5215\|ref=yes}} * {{Sum RFC\|5371\|ref=yes}} * {{Sum RFC\|5391\|ref=yes}} * {{Sum RFC\|5404\|ref=yes}} * {{Sum RFC\|5574\|ref=yes}} * {{Sum RFC\|5577\|ref=yes}} * {{Sum RFC\|5584\|ref=yes}} * {{Sum RFC\|5686\|ref=yes}} * {{Sum RFC\|5993\|ref=yes}} * {{Sum RFC\|6184\|ref=yes}} * {{Sum RFC\|6190\|ref=yes}} * {{Sum RFC\|6416\|ref=yes}} * {{Sum RFC\|6469\|ref=yes}} * {{Sum RFC\|7310\|ref=yes}} * {{Sum RFC\|7587\|ref=yes}} * {{Sum RFC\|7741\|ref=yes}} * {{Sum RFC\|7798\|ref=yes}} * {{Sum RFC\|9134\|ref=yes}} * {{Sum RFC\|9607\|ref=yes}} * {{Sum RFC\|9628\|ref=yes}} Payload identifiers 96–127 are used for payloads defined dynamically during a session. It is recommended to dynamically assign port numbers, although port numbers 5004 and 5005 have been registered for use of the profile when a dynamically assigned port is not required. Line 251 ⟶ 289: \|20 \|ITU-T [[G.729]] and G.729a audio 8 kbit/s; Annex B is implied unless the <code>annexb=no</code> parameter is used \|{{IETF RFC\|3551\|link=no}},{{Rp\|p=20}}, {{IETF RFC\|4856\|link=no}}{{Rp\|p=12}} \|- Line 405 ⟶ 443: \| \|[[H.264]] video \|{{~~Sum~~IETF RFC\|6190\|~~title~~link=no~~\|ref=yes~~}} \|- Line 416 ⟶ 454: \| \|[[H.265]] video (HEVC) \|{{~~Sum~~IETF RFC\|7798\|~~title~~link=no~~\|ref=yes~~}} \|- Line 438 ⟶ 476: \|20, 30 \|[[iLBC\|Internet low Bitrate Codec]] 13.33 or 15.2 kbit/s \|{{~~Sum~~IETF RFC\|3952\|~~title~~link=no~~\|ref=yes~~}} \|- Line 449 ⟶ 487: \| \|ITU-T [[G.711\|G.711.1]] A-law \|{{~~Sum~~IETF RFC\|5391\|~~title~~link=no~~\|ref=yes~~}} \|- Line 460 ⟶ 498: \| \|ITU-T [[G.711\|G.711.1]] μ-law \|{{~~Sum~~IETF RFC\|5391\|~~title~~link=no}} \|- Line 482 ⟶ 520: \| \|ITU-T [[G.719]] \|{{~~Sum~~IETF RFC\|5404\|~~title~~link=no~~\|ref=yes~~}} \|- Line 493 ⟶ 531: \| \|ITU-T [[G.722.1]] and G.722.1 Annex C \|{{~~Sum~~IETF RFC\|5577\|~~title~~link=no~~\|ref=yes~~}} \|- Line 570 ⟶ 608: \| \|ITU-T [[G.729.1]] \|~~RFC~~{{IETF RFC\|4749\|link=no}} \|- Line 592 ⟶ 630: \| \|ITU-T [[Half Rate\|GSM-HR]] (GSM 06.20) \|~~RFC~~{{IETF RFC\|5993\|link=no}} \|- Line 603 ⟶ 641: \| \|[[Adaptive Multi-Rate]] audio \|~~RFC~~{{IETF RFC\|4867\|link=no}} \|- Line 614 ⟶ 652: \| \|[[AMR-WB\|Adaptive Multi-Rate Wideband]] audio (ITU-T G.722.2) \|~~RFC~~{{IETF RFC\|4867\|link=no}} \|- Line 625 ⟶ 663: \| \|[[AMR-WB+\|Extended Adaptive Multi Rate – WideBand]] audio \|~~RFC~~{{IETF RFC\|4352\|link=no}} \|- Line 636 ⟶ 674: \| \|[[Vorbis]] audio \|~~RFC~~{{IETF RFC\|5215\|link=no}} \|- Line 647 ⟶ 685: \|20 \|[[Opus (audio format)\|Opus]] audio \|~~RFC~~{{IETF RFC\|7587\|link=no}} \|- Line 658 ⟶ 696: \| \|[[Speex]] audio \|~~RFC~~{{IETF RFC\|5574\|link=no}} \|- Line 669 ⟶ 707: \| \|Loss-Tolerant [[MP3]] audio \|{{IETF RFC \|5219 ~~(previously RFC 3119)~~\|link=no}} \|- Line 680 ⟶ 718: \| \|[[MPEG-4 Audio]] (includes [[Advanced_Audio_Coding\|AAC]]) \|{{IETF RFC \|6416 ~~(previously RFC 3016)~~\|link=no}} \|- Line 691 ⟶ 729: \| \|[[MPEG-4 Visual]] \|{{IETF RFC \|6416 ~~(previously RFC 3016)~~\|link=no}} \|- Line 702 ⟶ 740: \| \|[[MPEG-4]] Elementary Streams \|~~RFC~~{{IETF RFC\|3640\|link=no}} \|- Line 713 ⟶ 751: \| \|[[VP8]] video \|~~RFC~~{{IETF RFC\|7741\|link=no}} \|- Line 724 ⟶ 762: \| \|[[VP9]] video \|{{IETF RFC\|9628\|link=no}} ~~\|[https://tools.ietf.org/html/draft-ietf-payload-vp9 draft-ietf-payload-vp9]~~ \|- Line 746 ⟶ 784: \|20 \|[[Linear PCM]] 8-bit audio with 128 offset \|{{IETF RFC \|3551 ~~Section~~\|link=no}}{{Rp\|§ 4.5.10 ~~and~~ }}{{Rp\|Table 5}} \|- Line 757 ⟶ 795: \|20 (by analogy with L16) \|IEC 61119 12-bit nonlinear audio \|{{IETF RFC \|3190 ~~Section~~ \|link=no}}{{Rp\|§3}} \|- Line 768 ⟶ 806: \|20 \|[[Linear PCM]] 16-bit audio \|{{IETF RFC \|3551 ~~Section~~\|link=no}},{{Rp\|§ 4.5.11,}} {{IETF RFC \|2586\|link=no}} \|- Line 779 ⟶ 817: \|20 (by analogy with L16) \|[[Linear PCM]] 20-bit audio \|{{IETF RFC \|3190 ~~Section~~\|link=no}}{{Rp\|§ 4}} \|- Line 790 ⟶ 828: \|20 (by analogy with L16) \|[[Linear PCM]] 24-bit audio \|{{IETF RFC \|3190 ~~Section~~\|link=no}}{{Rp\|§ 4}} \|- Line 801 ⟶ 839: \| \|Uncompressed Video \|~~RFC~~{{IETF RFC\|4175\|link=no}} \|- Line 812 ⟶ 850: \| \|[[Dolby AC-3]] audio \|~~RFC~~{{IETF RFC\|4184\|link=no}} \|- Line 823 ⟶ 861: \| \|[[Dolby Digital Plus\|Enhanced AC-3]] audio \|~~RFC~~{{IETF RFC\|4598\|link=no}} \|- Line 834 ⟶ 872: \| \|[[Text over IP]] \|~~RFC~~{{IETF RFC\|4103\|link=no}} \|- \|dynamic \|EVRC<br>EVRC0<br>EVRC1 \|audio Line 844 ⟶ 883: \| \|[[Enhanced Variable Rate Codec\|EVRC]] audio \|~~RFC~~{{IETF RFC\|4788\|link=no}} \|- \|dynamic Line 854 ⟶ 893: \| \|[[Enhanced Variable Rate Codec B\|EVRC-B]] audio \|~~RFC~~{{IETF RFC\|4788\|link=no}} \|- Line 865 ⟶ 904: \| \|[[Enhanced Variable Rate Codec B\|EVRC-WB]] audio \|~~RFC~~{{IETF RFC\|5188\|link=no}} \|- Line 876 ⟶ 915: \| \|[[JPEG 2000]] video \|~~RFC~~{{IETF RFC\|5371\|link=no}} \|- Line 887 ⟶ 926: \| \|[[UEMCLIP]] audio \|~~RFC~~{{IETF RFC\|5686\|link=no}} \|- Line 898 ⟶ 937: \| \|[[Adaptive Transform Acoustic Coding\|ATRAC]]3 audio \|~~RFC~~{{IETF RFC\|5584\|link=no}} \|- Line 909 ⟶ 948: \| \|[[Adaptive Transform Acoustic Coding\|ATRAC]]3+ audio \|~~RFC~~{{IETF RFC\|5584\|link=no}} \|- Line 920 ⟶ 959: \| \|[[Adaptive Transform Acoustic Coding\|ATRAC]] Advanced Lossless audio \|~~RFC~~{{IETF RFC\|5584\|link=no}} \|- Line 931 ⟶ 970: \| \|[[DV (video format)\|DV]] video \|{{IETF RFC \|6469 ~~(previously RFC 3189)~~\|link=no}} \|- Line 942 ⟶ 981: \| \|[[ITU-R BT.656]] video \|~~RFC~~{{IETF RFC\|3555\|link=no}} \|- Line 953 ⟶ 992: \| \|Bundled MPEG-2 video \|~~RFC~~{{IETF RFC\|2343\|link=no}} \|- Line 964 ⟶ 1,003: \| \|[[SMPTE 292M]] video \|~~RFC~~{{IETF RFC\|3497\|link=no}} \|- Line 975 ⟶ 1,014: \| \|Redundant Audio Data \|~~RFC~~{{IETF RFC\|2198\|link=no}} \|- Line 986 ⟶ 1,025: \| \|Variable-rate DVI4 audio \|~~RFC~~{{IETF RFC\|3551\|link=no}} \|- Line 997 ⟶ 1,036: \| \|MPEG-1 Systems Streams video \|~~RFC~~{{IETF RFC\|2250\|link=no}} \|- Line 1,008 ⟶ 1,047: \| \|MPEG-2 Program Streams video \|~~RFC~~{{IETF RFC\|2250\|link=no}} \|- Line 1,019 ⟶ 1,058: \| \|tone \|~~RFC~~{{IETF RFC\|4733\|link=no}} \|- Line 1,030 ⟶ 1,069: \| \|[[Dual-tone multi-frequency signaling\|DTMF]] tone \|~~RFC~~{{IETF RFC\|4733\|link=no}} \|- Line 1,041 ⟶ 1,080: \|4<ref group=note>For aptX, the packetization interval must be rounded down to the nearest packet interval that can contain an integer number of samples. So at sampling rates of 11025, 22050, or 44100, a packetization rate of "4" is rounded down to 3.99.</ref> \|[[aptX]] audio \|~~RFC~~{{IETF RFC\|7310\|link=no}} \|- Line 1,052 ⟶ 1,091: \| \|[[JPEG XS]] video \|~~RFC~~{{IETF RFC\|9134\|link=no}} \|- Line 1,063 ⟶ 1,102: \| \|[[Secure Communications Interoperability Protocol\|SCIP]] \|~~RFC~~{{IETF RFC\|9607\|link=no}} \|} {{reflist\|group=note}} ▲==Text messaging payload == ▲* {{Sum RFC\|4103\|ref=yes\|notes=yes}} ▲* {{Sum RFC\|9071\|ref=yes}} ▲==MIDI payload == ▲{{Sum RFC\|6295\|ref=yes}} ▲{{Sum RFC\|4696\|ref=yes}} ==See also==