Add DisplayWidth and DisplayHeight to Format Selection (-f)

[hl2guide]

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[debug] System config: []
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Description of your issue, suggested solution and other information

Please consider adding a useful feature for "displaywidth" and "displayheight" for the format selection (-f switch). Being the width and height of the current display in pixels.

This would allow something like:
-f "bestvideo[height<=displayheight]+bestaudio/best[height<=displayheight]"

[VietTPham]

I thought there's already that option, that is straight from the readme https://github.com/rg3/youtube-dl/blob/master/README.md

width (numeric): Width of the video
height (numeric): Height of the video

Download best format available but not better that 480p
$ youtube-dl -f 'bestvideo[height<=480]+bestaudio/best[height<=480]'

[rautamiekka]

If you're meaning the resolution at which it's shown when viewed when the vid's resolution is lower than your screen's, that's not possible, it's all done automatically by the browser as a compensation.

[hl2guide]

hmmm, not quite what I mean.
For example my native resolution for my monitor is 1920x1080 (1080p).

I can use -f "bestvideo[height<=1080]+bestaudio/best[height<=1080]" and that makes sure that I only get up to 1080p videos, not 4K.

To be clear I am talking about the width and height of the display, not the video itself.

A variable that exposes the monitor dimensions would be useful 💃

[VietTPham]

does not sense to spend time adding this as a feature, you can just use another program that get your screen resolution, and add it as a variable to youtube-dl