Re: [Linphone-users] R: Playback sample rate

[Dragos Oancea]

Hi

You can try hack into mediastreamer2 and in audiostream.c , audiostreamstartfromio(), where you can set

the sample rate of specific filters (MS_FILTER_SET_SAMPLE_RATE) . Try changing it for stream->soundwrite.

Theoretically you could have changed the playback rate if linphone would have supported fmtp param sprop-maxplaybackrate . 

But yes, is tricky.

draft-ietf-payload-rtp-opus-11 - RTP Payload Format for the Opus Speech and Audio Codec

draft-ietf-payload-rtp-opus-11 - RTP Payload Format for the Opus Speech and Audio Codec By Spittka, Julian This document defines the Real-time Transport Protocol (RTP) payload format for packetization of Opus-encoded sp...

Cheers,

Dragos

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From: Michele Perrone <address@hidden>
To: address@hidden
Sent: Wednesday, April 6, 2016 11:05 AM
Subject: [Linphone-users] R: Playback sample rate

Setting sampling frequency and bitrate in Linphone is not that clear.

As Nabeel said, you can change the frequency in the linphonerc file.

The bitrate, however, is fixed – it depends on the compilation parameters of the codecs, I think. In the command-line version you cannot do anything about it; in the GUI, you can change the rate but the setting won’t last after a program restart.

So this is a bit tricky.

Regards

Michele

 

Da: address@hidden [mailto:address@hidden Per conto di Nabeel
Inviato: martedì 5 aprile 2016 23:36
A: address@hidden; address@hidden
Oggetto: Re: [Linphone-users] Playback sample rate

 

Im linphonerc_default / linphonerc_factory, set the sampling rate like this:

(I would like someone to clarify the difference between those two files)

[audio_codec_0]
mime=opus
rate=48000
channels=1
enabled=1

 

On 5 April 2016 at 18:59, André Eberle <address@hidden> wrote:

Hello, I am trying to set the sampling rate of my playback to 8khz but it seems to be fixed to 48khz, anyone knows how to change this?

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