Allows you to set the number of videos/thumnails per row in the youtube grid system on Home and Subscriptions pages.
当前为
"720p: Videos per row" - These options kick in when the viewport (your browser window) width is at least 1280px.
I'm using 720p (i.e. the corresponding height for 1280 in 16:9 ratio) in the description, because that is the more well known number, but in actuality, only the width matters here)
"1080p: Videos per row" - These kick in when the viewport width is at least 1920px
...and so on.
So that the number of videos per row, and therefore their size, can be dynamic.
5 videos per row might work for 1080p, but then if you dock the window to half the monitor for example, 5 videos per row is a bit much (the videos get small to fit 5 in)
Of course, there are much better ways to make this more dynamic and responsive, but that involves much more work and is more prone to breaking when YT constantly changes stuff. I might take that challenge on at a later date. We'll see.
