[pjsip] set flag on packet for retransmition

Bill Gardner billg at wavearts.com
Thu Apr 14 10:03:20 EDT 2016

Spoke too soon. RFC 5104 specifies a way to send a "full intra request" 
via RTCP. This is a different way to do it than the "picture fast 
update" sent via SIP INFO, described in RFC 5168. I don't believe PJSIP 
implements 5104 unless it's a recent addition. - Bill

On 4/14/2016 8:34 AM, poste9 wrote:
> I have implemented the libx264 codec for video call using pjsip and Im 
> wondering if there is any way to make sure a specific packet has arrived.
> Im not talking about frames but I would like to send SEI/SPS/PPS only 
> one time and make sure they arrived on the other side.
> At this moment I managed to send the packets but in a real world 
> application I cant know if they will reach the other end.
> I could use something to make that signaling by myself but I would 
> lose conpatibility.
> My real question is if I can set some flag on the rtp packet or maybe 
> using pjmedia itself to mark the header packets and get a response 
> from the other end when its all good. And of course using something 
> RFC like.
> I hope I managed to explain myself and thank you all in advance.
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