| 1 | initial version |
There is no field called rtp.timestamp-offset you can filter on. Or are you looking at some math with something called offset?
There is however a field called rtp.marker which you can use in the display filter rtp.marker == 1 to find the packets with the RTP marker it set, if that helps.
Also the RTP graph (menu Telephony|RTP|Stream Analysis) might be helpful to get an overview of what is happening in the RTP stream.