Hi Ashok, On 04/07/2008, ashok.akumar at wipro.com <ashok.akumar at wipro.com> wrote: > > Hi All, > > I have an application which is using pjmedia communication library for > sending and receiving rtp packets. > I run one instance of this application in sendonly mode and another in > recvonly mode. > I am sending a wavefile(PCMU) to the remote port from where I m capturing > the rtp packets and writing the received packets > into a wavefile. > > Now my problem is the send wavefile and the received wavefile are not > exactly similar ? > It is normal in VoIP that both sent & received audio are not exactly similar. The audio packets may be lost, dropped, or even some parts get skewed (become longer/shorter) in order to achieve smoothness yet real time. If you need both audio to be exactly similar, you can use file transfer (e.g: ftp) instead. > And other thing is size of received wavefile varies with respect to the time > I give for sleep in the recvonly mode. > > Why is it so? > Still related to the above case, it was recording the audio stream (not exactly copying audio) where the stream length is 'undefined' for the receiver side, sleep time does limit/define it. Regards, nanang
