Here's probably the answer: https://opus-codec.org/docs/opus_api-1.2/group__opus__decoder.html https://opus-codec.org/docs/opus_api-1.2/group__opus__decode...

Here's probably the answer: https://opus-codec.org/docs/opus_api-1.2/group__opus__decoder.html https://opus-codec.org/docs/opus_api-1.2/group__opus__decode... "Lost packets can be replaced with loss concealment by calling the decoder with a null pointer and zero length for the missing packet."