Wireshark can look for VoIP calls from the captured packets. You can click Expression to see more filter options. For example, the sip || rtp filter will display only SIP and RTP packets. Wireshark supports packet filters, which enables you to filter out unwanted packets. ImportantThe Packet Range option enables you to select a specific set of packets to save.
Multimedia Connector for Skype for Business. That lets TShark do the processing of the protocol layers, so that your program only needs to process the resulting data. If the members of the 5-tuple are all "named fields" in Wireshark, you could use TShark with the -T fields option, and use the -e option to specify which fields to print, and select a field with the time stamp ( frame.time_epoch would give you the time as seconds and fractions of a second since the UN*X epoch), a field the appropriate size ( frame.len gives you the raw number of bytes in the link-layer packet PLUS any meta-data such as a radiotap header for 802.11 radio information), and the other fields, and then feed the output of TShark to a script or program that does the processing you want to do. What are the members of the 5-tuple? If the flows are TCP or UDP, the source and destination IP addresses and port numbers, plus, perhaps, a number to distinguish multiple flows over time between the two endpoints would work for SCTP, it would be similar, although if a flow is a stream, you might need more. There are tons of links on this page to helpful tutorials, keep in mind Scapy does alot more but hone in on the areas that talk about pcap parsing. Let me know if you need any assistance figuring it all out, if you know C++ chances are this will already make alot of sense to you. Install Python and Scapy then use this to get you started. 
# grabs 'netflow-esqe' fields from packets in a PCAP file ICMP packets print as source ip, type -> dest ip, code'''
'''Parse PCAP files into easy to read NETFLOW like output\n For example I wrote this little snippet to parse a pcap field and give me something like what you are talking about using Scapy. If you haven't heard of Scapy yet I beleive what you are trying to do would be a near perfect fit.
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