[FFmpeg-devel] avcodec_send_packet: send 0 size packet to libopus for loss concealment

[Anthony Alba]

Hi devs,

I am converting a PCAP RTP file using the libopus decoder and there
may be missing packets. This is not a real-time application. I am
implementing my own reordering/missing packet buffer so if the buffer
declares a packet "lost" I want to inform the libopus.

Two questions:

1. What is the correct pattern to avcodec_send_packet() to signal lost
packet to a generic decoder?

2. libopus accepts NULL data and 0 size for loss concealment, but this
is a flush packet in libavcodec semantics, so how do you pass-through
this information? I accept that this is a leaky implementation detail
of the decoder so probably not the "correct" way to use libavcodec.

Thank you.

Anthony