[opus] Feeding decoder with reordered packets

[Pavel Punsky]

Sorry for probably obvious question but I could not find and answer on mail archive.

What would happen to decoded audio quality if the packets fed to decoder are out of order (no jitter buffer)?

For example, if order of packets is 0,1,2,4,3,5 (3 and 4 reordered) and there is no FEC.
Would it be better, in this case, to drop packet 3 and not decode it at all?

Or, if there is FEC, then try to restore 3 from 4 (which is 3's next packet and carries FEC for 3) and then drop 3 and continue to 5?

Thanks,
Pavel
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