[CraneWorm]

How could it not be? You "download" the stream every time you watch it. It's to everyone's benefit to cache it if you want to watch it more than once. That way you don't use that much bandwidth. You might be served less ads, but you shouldn't be watching them anyway.

[roywiggins]

The law can make a distinction between bits you downloaded to cache the video as you streamed it, and bits you downloaded to keep a copy offline. Of course, the result is similar- you have a copy of it on your hard drive somewhere- but the actions you took are different, your intentions are different, and the law can look at those things if it wants (which it does, all the time).