Bitrate/resolution priority switch

[welljsjs]

• I've verified and I assure that I'm running youtube-dl 2019.04.07

Before submitting an issue make sure I have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of my issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

Description of my issue, suggested solution and other information

Currently, the bitrate of videos takes priority over the resolution.

It'd be great if this behaviour could be changed (resolution over bitrate) with a single flag.

At the time, this is only possible by using a very large format flag (f.ex. -f 'bestvideo[height >= 1920]/[height >= 1280]/[height >= 720]/...'.

Sometimes, I'd like to download the file with the higher resolution instead of a higher bitrate.

A simple switch flag would be extremely convenient (f.ex. --priority-bitrate and --priority-resolution where --priority-bitrate is the default behaviour).

[dstftw]

No, since this does not scale. Custom formats sorting option should be implemented instead.