I've tested this and the squeeze page that have no video or fake video worked better for my niche. Anyway, most people use mobile these days so I guess that's why the one without video is converting well for me.
So if you're buying PPC traffic, obviously you'll disable mobile traffic so using a squeeze page with video is not an issue. If it's free traffic which you can't control whether they are on mobile or desktop, then use a squeeze page with no video.
But the most important thing is to split test and see what will work best for your offer or niche. Because if the traffic is from tier 1 countries (US, Canada, Australia, UK etc) then using video is not a problem.
However, most people from tier 2 and tier 3 countries rely on data-bundles and they don't watch a video online so that they can save their data-bundles. That's the number 1 reason I don't do advertising to people in my country because I know there's only a few people like me who use uncapped internet access.
So there's a lot of factors you have to look at before deciding whether to use video on a landing page or not. It's not all about what's working best for someone else, do a lot of split testing.
