Hi Kamil,

I've done a patch for Opus with FEC , but it has not been merged:

https://freeswitch.org/stash/projects/FS/repos/freeswitch/pull-requests/184/overview

I was inspired by how they've done it with SILK.

Regards,

Dragos Oancea

On 2015-04-13 16:49, Kamil Nigmatullin wrote:

> Hello. 

> 

> Anybody from developers could please clarify if FreeSWITCH uses

> Forward Error Correction feature in opus codec? We actually are not a

> specialists in C and cannot fully understand how decode function works

> in 414 line. According to opus documentation decode function  is

> called with special flag if previous packet is lost in order to call

> fec feature. In mod_opus it is hard to say for me as i don't see i or

> i+1 packets. Thanks    

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