how video download works?

[QZMTCH]

Do you want to change the default command line? Why?

no, I just would like in the browser settings to have a request input field for yt-dlp, for my settings, the same input field as for launching the browser with launch keys
and the choice of sites for which yt-dlp will download by default

For Youtube issue, can you provide an URL that is not using yt-dlp?

I had this when I tested it
any YouTube video, by clicking on the download button that pops up in the player, downloads the service specified in the file, and not the yt-dlp program
only if you remove YouTube from "supported_sites": , it will download yt-dlp 

because by default, when you click to download a video on YouTube, there are no signs of downloading for a very long time (and just this should also be added to the loading pop-up window so that this window displays the progress of the download as in cmd, something like this line https://i.imgur.com/IEpUYTh.png or the same output as cmd, so that you can see the progress of loading and combining video and audio) , and only after a while the download starts, and if you remove these lines, the download starts immediately

checking again now, I realized that it is downloaded from YouTube by default using yt-dlp, but I would like to have access to the settings directly in the browser, let's say I want to remove --merge-output-format mp4, but changes in the file are overwritten and I need to change the read-only attribute of the file

I don't want to use extensions like this https://chrome.google.com/webstore/detai...mhbpciplem to pass video link to cmd, it would be nice to use your popup menu