Converting RTP to audio

For debugging and troubleshooting it is often desirable to convert a stream of captured RTP packets to playable audio (e.g. a WAV file). A major difficulty in doing this is decoding the many different types of Codecs that can be carried in an RTP packet stream.

Programs with RTP to audio capability – open source

• • VoIPong – captures and decodes G711 RTP streams into WAV files

• • Vomit – decodes G711 RTP sessions

• Oreka – capture and retrieval of SIP, Skinny (SCCP) and raw RTP sessions with audio compression, rdbms metadata storage and web based user interface.
• Wireshark – decodes, analyzes, and plays back RTP streams.

Programs with RTP to audio capability – Commerical

• Kowa Quality Star – can capture and playback audio from RTP stream
• WildPackets Etherpeak VX
• GL Communications PacketScan includes an RTP to audio feature

Other approaches

• Using Ethereal and Quicktime or JMF JMStudio to playback RTP streams.

See Also:

• RTP
• Codecs