rtcp_sender_report::report_blocks is always empty about uvgrtp

[jrsnen]

Hi,

Report block is always empty if there were no received packets, otherwise it should not be empty. Zero report blocks in sender reports is correct for one-way streaming.

As for what lost and fraction mean, please consult https://datatracker.ietf.org/doc/html/rfc3550#section-6.4.1 and report if there is an error in behavior for uvgRTP.

BR, Joni

[wowaser]

Thanks!
Just to clarify, if I have a one-way stream, what does receiver_report report as loss? So, if I am streaming video and I want the receiver to have information about lost video packets, do I need to parse the receiver_report on the sender side and then send it to the receiver (as an APP packet for example)?

[jrsnen]

Loss is basically a sequence number that has not arrived. I don't currently remember the details in uvgRTP for this.

Usually it is the sender who is interested in how many of its packets are being lost so it can react. The data does exist inside uvgRTP receiver, but currently there is no way to retrieve it. Using APP packet is probably the easiest way to do this, but it certainly is not the intended way.

[wowaser]

Okay, thank you for clarification