The recently released DTube BETA offers a new, decentralized platform for uploading and sharing video content. It is developed on the STEEM blockchain and operates in a similar way as far as posts, upvotes and comments are concerned.
However videos are not uploaded onto the blockchain. A link to the video is stored on the blockchain and the actual video file is stored using IPFS. IPFS is not a blockchain technology but it is a decentralized one.
Check out this video on DTube to hear how the creator Adrien M describes his project: https://dtube.video/v/pressfortruth/ufluexpf