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Re: [Linphone-developers] how can i add other codecs to linphone windows

From: Sandrine
Subject: Re: [Linphone-developers] how can i add other codecs to linphone windows version 3.10.2 ?
Date: Wed, 7 Sep 2016 14:55:21 +0200

Hi Bernd,

We think there may be a misunderstanding between linphone and your other equipment.
There are a few options to try solve this out.

If the other equipment supports TCP, try using TCP as the transport (Options->Preferences->Manage sip accounts->Edit
set transport to TCP).

If not,  disable all the other unused codecs (Options,Preferences->Codecs) :video :VP8
for audio only keep the one you want to use enabled, disable the others. 
We would like you to try out is to explicitly set a bandwidth limit on upload 
 and download of 1Mbits/s (Options->preferences->multimedia settings->bandwidth).

Get back to us to tell us if it’s better. 

Sandrine Avakian
Software Engineer

Le 7 sept. 2016 à 13:31, Lentes, Bernd <address@hidden> a écrit :

Hi Sabrina,

now the log attached.
What i found out:

error: 2016-09-07 11:14:22:770 QOSAddSocketToFlow failed to add a flow with error 87 appears several times.
What does that mean ? Is it severe ?

Is the following interesting ?
message: 2016-09-07 11:14:23:315 Using the 'custom' video preset non-tagged
message: 2016-09-07 11:14:23:315 target bitrate not set for stream [006330D8] using payload's bitrate is 1500000
message: 2016-09-07 11:14:23:315 Limiting bitrate of video encoder to 1500000 bits/s for stream [006330D8]
message: 2016-09-07 11:14:23:315 OpenH264 encoder: Video configuration set: bitrate=1500000bits/s, fps=30,000000, vsize=640x480
message: 2016-09-07 11:14:23:315 MSOpenH264Enc: disabling AVPF
warning: 2016-09-07 11:14:23:324 Getting reference signal but no echo to synchronize on.
warning: 2016-09-07 11:14:23:324 Not enough ref samples, using zeroes
message: 2016-09-07 11:14:23:324 MSAudioMixer [062A5770] is entering bypass mode.
message: 2016-09-07 11:14:23:334 Samples are back.
error: 2016-09-07 11:14:23:433 no such method on filter MSOpenH264Dec, fid=16389 method index=7
error: 2016-09-07 11:14:23:434 no such method on filter MSOpenH264Dec, fid=16389 method index=8
message: 2016-09-07 11:14:23:472 LinphoneCall[048F8730] : payload type 96 H264/90000 fmtp=profile-level-id=42801F added to frozen list.

What is "frozen list" ?

RTP  audio=[d= 80,0,u= 79,9], video=[d= 65,5,u=1541,4], text=[d=  0,0,u=  0,0] kbits/sec
RTCP audio=[d=  0,0,u=  0,0], video=[d=  0,0,u=  0,0], text=[d=  0,0,u=  0,0] kbits/sec
message: 2016-09-07 11:14:26:803 Thread processing load: audio=5,020779 video=11,349777 text=0,000000

appears often. Video d (downstream ?) is mostly between 60 - 70 (Kbit/s ?).
That's the problem, isn't it ? What's the reason ?



----- Am 6. Sep 2016 um 16:39 schrieb Sandrine address@hidden:

Hello Bernd,

Did you modify any parameter to control the bandwidth?
Options->preferences->multimedia settings ->Bandwith control
Could you check what is happening in the linphone debug logs when you start a
video call in H264? (Help->debug window)
If unclear, please send the logs to me.

Kind regards,

Sandrine Avakian
Software Engineer

Le 6 sept. 2016 à 16:11, Lentes, Bernd < address@hidden > a
écrit :

Hi Sabrina,

thanks for your answer. I'm not used to compiling on windows, so i will not try
My problem is: we need to participate on a vc. I try to establish it with
linphone. The vc system is a Tandberg device. The video stream i get from the
tandberg is just 64Kbit/s, which is of course very rare, so quality is poor. My
video upload to the tandberg is ok.
I try to paste screenshots here: if it's not possible to send this e-Mail i can
offer the screenshots as a download.


And a screenshot from the Admin Webconsole of the MCU:

You see a rate limit from 64Kbit/s.

Using Ekiga as a client (which i don't want to use, it's not stable) i have a
rate limit of 4.1 Mbit/s. So quality is much better.
Anything i can do on that ?



----- Am 6. Sep 2016 um 15:17 schrieb Sandrine <
address@hidden >:


Due to patents issues, H263 is indeed not included in the release.

To have H263 in linphone-desktop, a new build from source has to be made with a
few specific compilation options:

We believe H264 is still a better alternative though.

Sandrine Avakian
Software Engineer

Le 6 sept. 2016 à 11:25, Lentes, Bernd < address@hidden > a
écrit :

i'm using linphone 3.10.2 on windows 7 64bit. As video codecs, i just get
offered h.264 and vp8. Is there a possibility to use more codecs ? Like H263
... ?



Bernd Lentes

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