RTP/AVP audio and video payload types

Payload type (PT) Name Type No. of channels Clock rate (Hz) Description References
0 PCMU audio 1 8000 ITU-T G.711 PCMµ-Law Audio 64 kbit/s RFC 3551
1 reserved (previously 1016) audio 1 8000 reserved, previously CELP Audio 4.8 kbit/s RFC 3551, previouslyRFC 1890
2 reserved (previously G721) audio 1 8000 reserved, previously ITU-T G.721 ADPCM Audio 32 kbit/s RFC 3551, previouslyRFC 1890
3 GSM audio 1 8000 European GSM Full Rate Audio 13 kbit/s (GSM 06.10) RFC 3551
4 G723 audio 1 8000 ITU-T G.723.1 RFC 3551
5 DVI4 audio 1 8000 IMAADPCM Audio 32 kbit/s RFC 3551
6 DVI4 audio 1 16000 IMAADPCM 64 kbit/s RFC 3551
7 LPC audio 1 8000 Experimental Linear Predictive Coding Audio RFC 3551
8 PCMA audio 1 8000 ITU-T G.711 PCM A-Law Audio 64 kbit/s RFC 3551
9 G722 audio 1 8000 ITU-T G.722 Audio RFC 3551 - Page 14
10 L16 audio 2 44100 Linear PCM 16-bit Stereo Audio 1411.2 kbit/s,[2][3][4] uncompressed RFC 3551, Page 27
11 L16 audio 1 44100 Linear PCM 16-bit Audio 705.6 kbit/s, uncompressed RFC 3551, Page 27
12 QCELP audio 1 8000 Qualcomm Code Excited Linear Prediction RFC 2658,RFC 3551
13 CN audio 1 8000 Comfort noise RFC 3389
14 MPA audio 1 90000 MPEG-1 or MPEG-2 Audio Only RFC 3551,RFC 2250
15 G728 audio 1 8000 ITU-T G.728 Audio 16 kbit/s RFC 3551
16 DVI4 audio 1 11025 IMAADPCM RFC 3551
17 DVI4 audio 1 22050 IMA ADPCM RFC 3551
18 G729 audio 1 8000 ITU-T G.729 and G.729a RFC 3551, Page 20
25 CELB video 1 90000 Sun's CellB Video Encoding[5] RFC 2029
26 JPEG video 1 90000 JPEG Video RFC 2435
28 NV video 1 90000 Xerox PARC's Network Video (nv)[6] RFC 3551, Page 32
31 H261 video 1 90000 ITU-T H.261 Video RFC 4587
32 MPV video 1 90000 MPEG-1 and MPEG-2 Video RFC 2250
33 MP2T audio/video 1 90000 MPEG-2 transport stream Video RFC 2250
34 H263 video   90000 H.263 video, first version (1996) RFC 3551,RFC 2190
dynamic H263-1998 video   90000 H.263 video, second version (1998) RFC 3551,RFC 4629,RFC 2190
dynamic H263-2000 video   90000 H.263 video, third version (2000) RFC 4629
dynamic (or profile) H264 video   90000 H.264 video (MPEG-4 Part 10) RFC 3984
dynamic (or profile) theora video   90000 Theora video draft-barbato-avt-rtp-theora-01
dynamic iLBC audio 1 Internet low Bitrate Codec 13.33 or 15.2 kbit/s RFC 3951
dynamic PCMA-WB audio   16000 ITU-T G.711.1, A-law RFC 5391
dynamic PCMU-WB audio   16000 ITU-T G.711.1, µ-law RFC 5391
dynamic G718 audio   32000 ITU-T G.718 draft-ietf-avt-rtp-g718-03
dynamic G719 audio (various) 48000 ITU-T G.719 RFC 5404
dynamic G7221 audio   16 or 32 kHz ITU-T G.722.1 RFC 5577
dynamic G726-16 audio 1 8000 ITU-T G.726 audio with 16 kbit/s RFC 3551
dynamic G726-24 audio 1 8000 ITU-T G.726 audio with 24 kbit/s RFC 3551
dynamic G726-32 audio 1 8000 ITU-T G.726 audio with 32 kbit/s RFC 3551
dynamic G726-40 audio 1 8000 ITU-T G.726 audio with 40 kbit/s RFC 3551
dynamic G729D audio 1 8000 ITU-T G.729 Annex D RFC 3551
dynamic G729E audio 1 8000 ITU-T G.729 Annex E RFC 3551
dynamic G7291 audio   (various) ITU-T G.729.1 RFC 4749
dynamic GSM-EFR audio 1 8000 ITU-T GSM-EFR (GSM 06.60) RFC 3551
dynamic GSM-HR-08 audio 1 8000 ITU-T GSM-HR (GSM 06.20) RFC 5993
dynamic (or profile) AMR audio (various) 8000 Adaptive Multi-Rate audio RFC 4867
dynamic (or profile) AMR-WB audio (various) 16000 Adaptive Multi-Rate Wideband audio (ITU-T G.722.2) RFC 4867
dynamic (or profile) AMR-WB+ audio 1, 2 or omit 72000 Extended Adaptive Multi Rate – WideBand audio RFC 4352
dynamic (or profile) vorbis audio (various) from 8 kHz to 192 kHz RTP Payload Format for Vorbis Encoded Audio RFC 5215
dynamic (or profile) speex audio 1 8000, 16000 or 32000 RTP Payload Format for the Speex Codec RFC 5574
dynamic (96-127) mpa-robust audio   90000 A More Loss-Tolerant RTP Payload Format for MP3 Audio RFC 5219
dynamic (or profile) MP4A-LATM audio   90000 or others RTP Payload Format for MPEG-4 Audio RFC 3016
dynamic (or profile) MP4V-ES video   90000 or others RTP Payload Format for MPEG-4 Visual RFC 3016
dynamic (or profile) mpeg4-generic audio/video   90000 or other RTP Payload Format for Transport of MPEG-4 Elementary Streams RFC 3640
dynamic L8 audio (various) (various) Linear PCM 8-bit audio with 128 offset RFC 3551 Section 4.5.10 and Table 5
dynamic DAT12 audio (various) 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000 or others IEC 61119 12-bit nonlinear audio RFC 3190 Section 3
dynamic L16 audio (various) 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000 or others Linear PCM 16-bit audio RFC 3551 Section 4.5.11,RFC 2586
dynamic L20 audio (various) 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000 or others Linear PCM 20-bit audio RFC 3190 Section 4
dynamic L24 audio (various) 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000 or others Linear PCM 24-bit audio RFC 3190 Section 4

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