[Freeswitch-users] Opus packet loss

[mario_fs]

Could it be related to this which is outstanding?, I can duplicate it every time:
https://github.com/signalwire/freeswitch/issues/963 <https://github.com/signalwire/freeswitch/issues/963>
Opus warbly, drops sections or unintelligible audio due to gaps in RTP timestamps

> On Mar 13, 2021, at 4:26 AM, Dragos Oancea <dragos at freeswitch.org> wrote:
> 
> When trying to understand how it works make sure you are not mixing decoding side settings with the encoding side settings.
> packet-loss-percent is encoding side and is the initial value for loss if you use adjust-bitrate (callback with SCC_AUDIO_PACKET_LOSS from the core) . 
> The callback comes only if there is incoming RTCP - which for audio is typically at 5 seconds interval.So the adjust-bitrate feature will update the loss too, not only the bitrate. 
>  
> Otherwise, without adjust-birate, it's the default value for OPUS_SET_PACKET_LOSS_PERC() which will stay like this along the call and depending on the preset bitrate it will generate a certain amount of FEC on top of the payload of some of the packets (encoder decisions) .  So no, you should not set that very high, since you can't know the real network conditions before the call is made. 15 or 20 are good values.
> 
> 
> On Fri, Mar 12, 2021 at 9:05 PM Brian West <brian at freeswitch.com <mailto:brian at freeswitch.com>> wrote:
> CPU and bandwidth.
> 
> /b
> 
> 
> On Fri, Mar 12, 2021 at 12:40 PM Terry C <infinite3219 at gmail.com <mailto:infinite3219 at gmail.com>> wrote:
> Hi,
> 
> We use FreeSwitch 1.10.5 with Opus audio for clients. We target voice quality to be wideband. The config settings are below. We also set a jitter buffer in the dialplan.
> 
> Is there a downside to increasing the packet loss percent to 40-50% other than using more bandwidth? Is there a voice quality impact if you set it too high (what would be considered too high)?
> 
> Thanks.
> 
> <param name="use-vbr" value="1"/>
> <param name="use-dtx" value="1"/>
> <param name="complexity" value="10"/>
> <param name="packet-loss-percent" value="30"/>
> <param name="keep-fec-enabled" value="1"/>
> <param name="use-jb-lookahead" value="1"/>
> <param name="maxaveragebitrate" value="40000"/>
> <param name="maxplaybackrate" value="16000"/>
> <param name="sprop-maxcapturerate" value="16000"/>
> <param name="adjust-bitrate" value="1"/>
> </settings>
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> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://signalwire.com/>
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community <https://signalwire.community/>
> 
> Professional FreeSWITCH Services
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> 
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community
> 
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> 
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