Feature Request: Command Line switch to force specific extractor

[Wowfunhappy]

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Description of your issue, suggested solution and other information

Sometimes, youtube-dl fails to download a video which would normally be supported, because it did not recognize the URL and falls back on the generic extractor. Although youtube-dl already has a --force-generic-extractor switch, users cannot force a specific extractor other than the generic one.

I'd appreciate a command line switch such as --force-extractor <extractor>. This would allow me to work around #13890 by adding --force-extractor cbs.com to the command line, and would allow other users to work around similar problems in the future.

[dstftw]

Forcing concrete extractors is impossible and does not make any sense since each concrete extractor is bound to concrete URL pattern.