The document discusses several popular video platforms for watching music videos, including YouTube, iTunes, The Box TV channel, and Vimeo. YouTube is described as one of the most popular platforms, where artists frequently premiere new music videos and generate hundreds of millions of views. iTunes allows users to purchase and download individual music videos. The Box is a UK TV channel that airs music videos 24 hours a day, though television music channels are declining in popularity compared to online options. Vimeo is similar to YouTube but is ad-free and seen as a more polished site for artists to showcase their videos.