How about saving a dump to a file and splitting it into separate files?
$ sudo tcpdump -c 10 -w mycap.pcap tcpdump: data link type PKTAP tcpdump: listening on pktap, link-type PKTAP (Packet Tap), capture size 65535 bytes 10 packets captured
you will need to install wirehark for this (for example, using brew install the proxy server on Mac or apt-get on Ubuntu)
$ editcap -c 1 mycap.pcap output.pcap
10 captured packets โ 10 created files
$ ls -la output* | wc -l 10
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