[Freeswitch-users] Opus PLC issue - can this be a bug?

[Anthony Minessale]

I did a patch last night that has it working the best I can possibly do.
 40% packet loss with crystal clear audio and no error messages.
I think the errors were a result of rtcp payload collision which is now
fixed.



On Tue, Oct 6, 2015 at 4:30 AM, Dragos Oancea <doancea at orange-vallee.net>
wrote:

> Hi
>
> I have tested yesterday FS master
> (b5e486fd5c9bfb52923b30b8b53037c39cdb8665) with Opus PLC and I can tell you
> that it works just fine .
> If there is/was a bug it must have been because of rtp & rtcp mux/demux ,
> by looking at the
> error message about payload type. Do those errors show at regular
> intervals ? eg: 5 seconds , which can be the rtcp interval ?
>
> Regards,
> Dragos
>
>
>
> On 10/05/2015 12:25 AM, Stanislav Sinyagin wrote:
>
> here's a great deal of advice on how to simulate a random packet drop:
>
> http://stackoverflow.com/questions/614795/simulate-delayed-and-dropped-packets-on-linux
>
>
>
> On Sun, Oct 4, 2015 at 11:19 PM, Thomas <lists at virtues.net> wrote:
>
>> Just retested with latest master, still there.
>>
>> It also sometimes includes this:
>>
>> switch_core_media.c:2421 alternate payload received (received 72,
>> expecting 111)
>> switch_core_media.c:2444 Could not change to payload type 72, ignoring...
>>
>> or this
>>
>> mod_opus.c:346 OPUS_INVALID_PACKET ! nb_opus_frames: -4
>> mod_opus.c:836 Decoder Error: corrupted stream fs:4080 plc:false!
>> switch_core_io.c:1244 Codec OPUS (STANDARD) decoder error!
>>
>> When I test through echo without any decoding, it sounds surprisingly
>> good for 5% packet loss. So it seems like an FS issue. It's quite strange
>> though. Will file a jira.
>>
>>
>>
>> On 04.10.2015 16:37, Brian West wrote:
>>
>> Have you tried with code from today?  we had a regression I think that
>> was resolved late yesterday.
>>
>> On Sun, Oct 4, 2015 at 1:41 PM, Thomas <lists at virtues.net> wrote:
>>
>>> Hello list,
>>>
>>> on a connection with an unfortunate amount of packet loss, I'm getting a
>>> lot of these:
>>>
>>> mod_opus.c:289 FEC in CELT_ONLY mode ?!
>>>
>>> ... with the occasional ...
>>>
>>> mod_opus.c:801 Decoder Error: corrupted stream fs:4080 plc:false!
>>> switch_core_io.c:622 Codec RAW Signed Linear (16 bit) decoder error! [9]
>>>
>>> ... and ...
>>>
>>> switch_rtp.c:875 Invalid STUN/ICE packet received 493 bytes
>>>
>>> That's accompanied by robotic distortion.
>>>
>>> This sounds more like FS is receiving total junk rather than missing
>>> packets, but surely there must be checksums
>>> preventing errors inside these packets? Can this really be a bug in FS,
>>> or do I need an exorcist for that internet
>>> connection? :)
>>>
>>> Cheers!
>>>
>>> Thomas
>>>
>>> P.S.: Last nights master
>>>
>>>
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>>
>>
>>
>> --
>>
>> *Brian West*
>> brian at freeswitch.org
>>
>>
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>>
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>
>
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-- 
Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬

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