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[Linphone-users] Decreasing audio quality over time


From: Carriero Stefano TA . MSE_T_H14 . 1401
Subject: [Linphone-users] Decreasing audio quality over time
Date: Fri, 27 Nov 2015 16:51:08 +0000

I have tried to play a song using Linphone 3.9.1 on a Windows 8.1 towards a remote computer on the same local area network (Gigabit Network).

No matter what codec I choose, the quality of the music decreases over time. If I pause and resume the call, the audio quality is good in the beginning and then it gets worse again.

I monitored the data traffic and could observe that the bitrate starts at approx. 50kbps and slowly decreases to 25kbps. As soon as the bitrate starts to decrease, the quality gets worse.

What could be the reason for the decreasing bitrate? As already mentioned, I am on a Gigabit network and there is only one Switch between the two Windows machines. There is no other traffic on the network that could influence the transmission.

I did the same test on two Windows 7 machines, unfortunately with the same result.

 

Am I the only one having this issue?

 

Please find attached a wireshark capture.

 

Cheers

Attachment: linphone.pcapng.gz
Description: linphone.pcapng.gz


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