Subscribers = Higher Video Rankings?

I know I ask a lot of odd, not often asked questions in this section - but I really do appreciate all the input, I really do. Thought I'd say that first.

I asked previously about social signals, and how there are many different types of social signals.

I had a thought earlier, and if it's true - I could potentially help everyone rank higher, faster.

So subscribers would clearly be a social signal, but for 1. I'm not sure how potent a subscriber is and 2. If the subscriber has to subscribe via the button on the video you want ranked, or on the channel in which is the owner of the video.

After all of that, my question is simply: For it to be a quality 'social signal' to rank Youtube videos, would the subscriber need to subscribe on the button of the video or the channel, or does it not matter?

Thanks guys. D:

I wouldn't say it makes a difference, however you can obviously track it in analytics, so i always think that if you can see it, they probably use it.

When someone clicks subscribe whilst watching the video, it really helps rankings as it shows youtube that the person found exactly what they were looking for in the video.