No, Nostr be like "here's 5000 *links* to videos, some of which on YouTube, some of which on some HTTP server and some of which unavailable". Nostr works because hosting relays is cheap. Hosting relays is cheap because they don't store videos, audio or images and they don't have full-text search functionalities. If a lot of storage or computational power is required, you need to figure out a way to effectively minimize it, pay for it and rate-limit it.