Re: [Linphone-users] video troubles: sip number to test video?

[Liviu Andronic]

Hello

On Tue, 08 Mar 2011 22:48:57 +0100, Simon Morlat  
<address@hidden> wrote:

> Hi,
>
> I analyzed the log and I noticed two things:
>
> - you set an upload bandwidth limit to 128kb/s (kilo bits per seconds),
> which corresponds to the 15KB (kilo bytes) you are observing
Silly me, why didn't I think of that?! :)

Seriously though, wouldn't it be better to have the bandwidth control  
limits specified in kilo bytes instead of the current kilo bits? This  
would avoid confusing naive users such as myself. Much of what happens on  
a computer or on the internet is in kilobytes nowadays (downloads in a web  
browser, file sizes in a file manager, etc.), so I would guess that your  
average John Doe would be happier with defining settings in kilobytes. I  
for one have never quite made a difference between bits and bytes, well,  
up until now. :)


> - however despite of that you have a significant packet loss rate, as
> shown in the statistics, as well as late packets:
Yes, Skype voice and video also freezes from times to times, before it  
normalizes. But it is generally bearable.


> linphone-message :  number of rtp packet sent=5857
> linphone-message :  number of rtp bytes sent=183710 bytes
> linphone-message :  number of rtp packet received=5705
> linphone-message :  number of rtp bytes received=165029 bytes
> linphone-message :  number of incoming rtp bytes successfully delivered
> to the application=160699
> linphone-message :  number of times the application queried a packet
> that didn't exist=11717
> linphone-message :  number of rtp packet lost=128
> linphone-message :  number of rtp packets received too late=150
> linphone-message :  number of bad formatted rtp packets=0
>
> Which is unfortunately usual with wifi, depending on the signal
> receiving conditions.
That's a nice tip, thanks for sharing. I'll voiping with the cable  
connection, to see teh difference.


> Packet losses in audio disturb a lot echo cancellers.
>
> So if you are sure you have the bandwidth for, you can increase the
> upload bandwidth limit in the codec tab of the settings, which will
> result in better quality.
I've tested my internet connection with voipreview [1] and I get 562kbps  
downloads and 628kbps uploads, which are in the 70KB range that I noticed  
Skype was using. I'll try with the new limits and report back.

Regards
Liviu

[1] http://www.voipreview.org/voipspeedtester.aspx



> Simon
>
> Le jeudi 03 mars 2011 à 19:18 +0100, Liviu Andronic a écrit :
> > On Thu, 03 Mar 2011 15:55:24 +0100, Simon Morlat
> > <address@hidden> wrote:
> > > Can you please send a log ? (linphone --verbose &>log.txt)
> > >
> > Sure. I'm sending you the log and the config file that I used on both
> > machines. As explained previously, the up speed never went above 15KB
> > although my internet connection is capable of more, and the CPU doesn't  
> > go
> > above 60% (dual core in both cases). Generally the image is quite
> > pixelised, but if any significant movement occurs it quickly becomes
> > unbearably distorted and doesn't always/easily return to normal. Apart
> >  from random echoing (the cancellation sometimes doesn't work), the  
> > audio
> > is flawless.
> >
> > Please let me know if I can provide more info. Regards
> > Liviu
> > _______________________________________________ Linphone-users mailing  
> > list address@hidden  
> > http://lists.nongnu.org/mailman/listinfo/linphone-users


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