The only software that generates .pcap files is Wireshark and these files contain captured data sniffed out from network packets. Wireshark actually allows opening of such alternative file types, like .out files from Catapult DCT2000trace, but it might not be able to convert these to .pcap files. Export to some generic format for reporting purpose (like XML) is most likely doable.
Updated: January 18, 2023