But what if the video is 5 or 10 minutes long and it's focused on the exact problem you have, plus it has a blog-post style block of text under it with the code

But what if the video is 5 or 10 minutes long and it's focused on the exact problem you have, plus it has a blog-post style block of text under it with the code examples? And on top of that, there's a git repo which shows a before / after for just that feature. That's the value in something like Rails Casts.