[Serusers] decoding g729 encoded rtp streams
İlker Aktuna (Koç.net)
ilkera at koc.net
Wed Jul 26 14:34:21 CEST 2006
Thanks for your kind reply.
Unfortunately I couldn't find any implementation, but in the thread you submitted, seems that Mr. Martin Regner has made an application to do what I want to achieve.
Is there a way to enter that forum to contact him ?
From: Andres [mailto:andres at telesip.net]
Sent: Tuesday, July 25, 2006 5:52 PM
To: İlker Aktuna (Koç.net); serusers at iptel.org
Subject: Re: [Serusers] decoding g729 encoded rtp streams
İlker Aktuna (Koç.net) wrote:
>Thanks for the detailed explanation. It's really useful.
>I'm trying to automate this whole process. All tools except Ethereal (tcpdump, rtpdump, voiceage decoder) are command line tools that can be used in a batch/shell script.
>How can I export rtp stream without using Ethereal, or from command line ?
>is there a way ?
There probably is a way but I have not have the need to investigate.
You can try googling around and you will find related discussions like:
>From: Andres [mailto:andres at telesip.net]
>Sent: Monday, July 24, 2006 8:18 PM
>To: İlker Aktuna (Koç.net)
>Cc: serusers at iptel.org
>Subject: Re: [Serusers] decoding g729 encoded rtp streams
>İlker Aktuna (Koç.net) wrote:
>>Thanks for the information.
>>Actually, I downloaded it but couldn't find how to export rtp payload.
>>Does rtpdump read capture files recorded with Ethereal/tcpdump ?
>>(in which format should I save the file?)
>>Btw, there is a Windows sniffer named "Cain & Abel" this one decodes g729.
>First you export the RTP data from within Ethereal like this:
>1. Open Capture
>2. Click on Analyze->Statistics->RTP Streams->Show All 3. Select the stream you want to export 4. Click 'Save As'
>5. Then feed that file into rtpdump like the below example 'trace.rtp'.
>Here is the command line:
>rtpdump -F payload -f trace.rtp -o file.out
>file.out will contain just the payload which can then be decoded.
>>From: Andres [mailto:andres at telesip.net]
>>Sent: Friday, July 21, 2006 10:53 PM
>>To: İlker Aktuna (Koç.net)
>>Cc: serusers at iptel.org
>>Subject: Re: [Serusers] decoding g729 encoded rtp streams
>>İlker Aktuna (Koç.net) wrote:
>>>I know that there are licence and patent issues but is it possible to
>>>decode g729 encoded rtp streams with any software ?
>>>I have licenced Eybeam softphone with g729 support. But it can only
>>>decode streams in a conversation.
>>>I just need to decode streams recorded with tcpdump/ethereal.
>>>Once I had used a software with this feature but then it turned out
>>>to be a trojan. I don't remember the name now.
>>>Is there any other software ? (or method using Eyebeam ?)
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