Hi All, I'm trying to decode an SRTP stream from a pcap file using pcaputil, unfortunately the pcaputil return the following error : [root at localhost i686-pc-linux-gnu]# ./pcaputil -c AES_CM_128_HMAC_SHA1_80 -k gmq82ASJ4uFkkurIS9MwccsTVSuJyYSBtt3hlYg/ packet_decode.pcap output.wav 03:41:15.513 os_core_unix.c !pjlib 2.1 for POSIX initialized 03:41:15.521 pa_dev.c PortAudio sound library initialized, status=0 03:41:15.522 pa_dev.c PortAudio host api count=1 03:41:15.522 pa_dev.c Sound device count=1 03:41:15.522 pjlib select() I/O Queue created (0x8659dec) 03:41:15.522 endpoint.c Warning: no worker thread is created inmedia endpoint for internal ioqueue *pcaputil: ../src/pjmedia/transport_srtp.c:400: pjmedia_transport_srtp_create: Assertion `endpt && tp && p_tp' failed. Aborted* Note: I'm running PJSIP version 2.1.0 on CentOS 5. If PJSIP cannot decrypt SRTP pcap file, is there any other tools that might help to decrypt the audio stream. Any thoughts about the issue will be greatly appreciated, Thank you all for your help and time. Best Regards, Abdenasser -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130606/0c8fe7b9/attachment-0001.html>