It would be nice if some addon would intercept video page opening, initiated background download via youtube-dl, and plopped VLC window running the video (as it's downloading) inserted into the page.
I would pay for that
I would pay for that
My current setup is Video DownloadHelper + JDownloader 2. I have VDH set to copy the direct URL of the video only. And JD2 will detect the video url via clipboard monitoring and will prompt to download the video.
I believe it is still possible to do it in PaleMoon and WaterFox (fork of Firefox). They still uses XUL which it was before Mozilla decide to move to WebExtension. However a warning, they are not current with securities updates as Firefox are. I believe they are few version behind.
it is fairly crude, but I use i daily.
Code lives here https://github.com/DavidVentura/Firefox_External_Application...