LBRY is a new protocol which allows anyone to build apps that interact with digital content on the LBRY network. Apps built using the protocol allow creators to upload their work to the LBRY network of hosts (like BitTorrent), to set a price per stream or download (like iTunes) or give it away for free (like YouTube without ads). The work you publish could be videos, audio files, documents, or any other type of file.
Traditional video (or other content) sites such as YouTube, Instagram, and Spotify store your uploads on their servers and allow viewers to download them. They also allow creators to make some money through advertising or other mechanisms. However, there are some well-known drawbacks, especially for people whose material is perceived as not being advertiser-friendly.
LBRY aims to be an alternative to these sites, allowing publishers and their fans to interact directly without the risk of demonetization or other meddling.