@racameron
Yeah, I wasn't very specific, my bad...
So, I've been using Channels for maybe 2 years, with the last year it being my sole go-to to watch TV. I say the last year because it took me a year to wean myself off Tivo and finally turn it off after untold years, haha. So that's where I'm coming from regarding this request.
So to clarify, yeah, I didn't mean speed up current, live TV; I don't know how one would do that either. However, IIRC on Tivo, like @Jay1987 said, I think you could do this on the buffer of a live stream and then when it caught up, it simply dropped back to normal speed.
What I should have said though, was that I was looking for how to slow down live TV. Ideally, if you're familiar with Tivo and how their scrubber works overall, regarding FF/REW/Skipping/Quick Mode/Slow, then I'd love for Channels to work the same way! Yes, I know, Channels is not Tivo and I'm done with Tivo, but these specific functions, it did extremely well.
Coming back to slowing live TV, I used the hell out of that functionality when watching sports. It was great from the perspective of you're watching a game and something happens you'd like to watch in slow-mo.
I know, edge case I'm sure!
Cheers!