Ask Your Question

Can listen but not save VoIP data

asked 2020-03-28 18:42:40 +0000

OCS gravatar image

updated 2020-03-28 18:44:41 +0000

grahamb gravatar image


I can hear the RTP via Wireshark, but saving the rtp as .au leads to "codec not supported - file incomplete".

  1. Which codec would be needed to be supported by Wireshark
  2. Where do I get it?
  3. How do I make Wireshark use it

Thank you in advance OCS

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2020-03-28 23:11:45 +0000

Jaap gravatar image

Playing and exporting RTP are different features. While playing has been instrumented to accommodate various codecs, for saving this is currently limited to PCM codec only.

edit flag offensive delete link more


I checked with page that says that you can "save the stream with option .raw or best .au - which would allow me to forward with another tool (e.g. "VLC media player" or "audacity"). It also mentions codec G729 for the coding of the stream. It shall be installed as plugin in Wireshark. My Wireshark screen doesn't show the "options", but only "Sychronized / Asycrone / Audiostream / CSV" which then results as "codec not supported" (see above). So where is the error. Thanx

OCS gravatar imageOCS ( 2020-03-29 12:33:33 +0000 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower


Asked: 2020-03-28 18:42:40 +0000

Seen: 708 times

Last updated: Mar 29 '20