Wireshark format includes a "dump" with data packets, which is collected over a channel and sometimes a common folder to store, that data in the PCAP Next Iteration file system.
The .pcapng stands for the file system, this file system compatible with the recorded data transmission packet. It includes several data blocks.
It is quite robust, but it should not be helped by the other devices. Wireshark allows the libpcap system as well.
