For quilting, I generally prefer written instructions but I also enjoy some videos.
For home improvement projects, a video is better for me. It can be hard for me to visualize the steps when I'm not familiar with the terminology and methods used, and a video really helps. Often I watch several before starting a project, because different people have different methods, and some of them leave out vital steps. That's one of the pitfalls of amateur videos, but the same can be true of written directions.