Hi Wajdi,
How's it going now, did you try it as Jaap said? I also wonder where the
problem is.
On Tue, Mar 18, 2008 at 8:18 AM, Jaap Keuter <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Play around with lame options a bit. First of all '-s 8000' is wrong, it
> should be '-s 8'. I don't know what you do when recording both directions,
> but
> having two PCM files, you need to mix them, so they don't clip.
>
> I would suggest using Audacity for this audio work.
>
> Thanx,
> Jaap
>
> TORKHANI Wajdi wrote:
> > Thank you so much
> >
> > After 4 weeks I can finally to hear the voice,
> > But now I have another problem!
> > If i record only one direction the sound run very quickly and if record
> > both direction i have a very very very bad quality of voice !!!!
> >
> > 1-I record the payload in a binary file:
> >
> > Code:
> >
> > void rawfile(unsigned char * payload,FILE *f){
> > fwrite(payload, 10,1,f); //10 :because audio data is packed into 80
> > bits (10 bytes)
> > }
> >
> > 2- I decode the binary file by using voiceage G729, which gives me a
> > file : "16-bit mono PCM speech data sampled at 8000 Hz"
> >
> > 3- convert PCM file into wav by using Lame with:
> > lame --decode -x -r -s 8000 -m m -b 16 file.pcm file.wav
> >
> > Is it correct ?!
> >
> > ----- Original Message ----- From: "Jaap Keuter" <[EMAIL PROTECTED]>
> > To: "Developer support list for Wireshark" <[email protected]>
> > Sent: Saturday, March 15, 2008 8:46 PM
> > Subject: Re: [Wireshark-dev] RTP raw file
> >
> >
> >> Hi,
> >>
> >> Have a look at rtp_analysis.c
> >>
> >> The idea is to 'tap' the RTP packets and write out the payloads into a
> >> file.
> >> That gives you the stream as seen on the network, actual voip
> >> applications use
> >> a jitterbuffer to recover from sequence errors and changing network
> >> delay.
> >>
> >> Thanx,
> >> Jaap
> >>
> >> TORKHANI Wajdi wrote:
> >>> Hello,
> >>>
> >>> Im a final year student of engineering. Im doing a project on VOIP
> >>> (G.729)
> >>>
> >>> I must create a voip sniffer (to capture communication VOIP on the
> LAN)
> >>> and then to convert them into audio format.
> >>> I succeeded in preparing a sniffer in C++ (by using the library
> >>> winpcap) to:
> >>> 1- capture network traffic
> >>> 2- Filtre UDP trafic
> >>> 3- Read ethernet,ip,udp and RTP header.
> >>> But I do not know how to create a raw file seems the output file
> created
> >>> by Ethereal
> >>> (Statistics->RTP->STeam Analysis->save payload-> .raw )
> >>>
> >>>
> >>> Please please help me.
> >>>
> >>> Thank you so much.
> >>>
> >>
>
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>
--
-------------------------------
Enjoy life!
Barco You
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