Parsing packets without active connection

Hi everyone,

Can I use NMP to parse already saved packets using a tool like:
https://github.com/barneygale/rex

In fact I'm looking to save some packets from a game session using a sniffer.
Rex is a good example, but maybe NMP itself. I like the idea of rex because I can clear it to the maximum, then just doing raw dumps, very lightweight, without a bunch of classes I will never use.
Or maybe just a scapy one-liner to dump needed packets traffic.

I want to be able to create a software that may use NMP to decode/parse those saved packets, with no connection to the server.
For ex, to get x y z infos from a "player position & look" packet dump, without needing to instanciate a connection object and proxying again the game to listen to fresh packets as I already have it and just want to get packet fields fast and simple.

Can I currently achieve that ?
Thanks !

No source file or test is named in the issue. Start by locating the packet-parsing entry point and checking whether it accepts saved raw packet data without a connection; compare that path with the stated rex or scapy capture formats. Done means documenting a supported offline parsing path or identifying the API gap and its expected input.