I can see that SIP Gateway sends a RTCP(Full Intra-frame Request H.261) packet if it doesn't receive H.264 I-Frame.
As I know...most SIP servers support NOT a RTCP(Full Intra-frame Request) BUT a SIP INFO for Video Fast Update.
so... Is there any how sending SIP INFO instead of RTCP?
No, currently only RTCP is supported for key frame trigger.
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