Not just media, one could extract WhatsApp's cipher-key and message-db (not sure...

Not just media, one could extract WhatsApp's cipher-key and message-db (not sure if it works on current versions) without requiring root: https://forum.xda-developers.com/showthread.php?t=2770982 (2016).

And here's a desktop viewer to search through decrypted files: https://forum.xda-developers.com/showthread.php?t=1583021 (last updated: 2018).