Implement oEmbed protocol

[Chocobozzz]

Spec: https://oembed.com/

[Chocobozzz]

Implemented: d8755ee

But most consumers use whitelist to accept or not HTML from OEmbed servers (for security reasons), so this does not really work. Since PeerTube can be installed under any domain, I don't think there is an easy way to have the player embedded on social networks (even on Diaspora, Mastodon...).

[tcitworld]

There's the OpenGraph og:video metadata that's missing and may be required to embeed videos on some websites.

[Chocobozzz]

Thanks @tcitworld -> 7ff7802

[PeterAlfonsLoch]

The og:video tag is missing and should have a url to the file, not the embed url.

If you want to use the og:video:url and og:video:secure_url then it's the same thing it should be a url to the file and not the embed link.

Example: <meta property="og:video" content="http://example.com/bond/trailer.swf" />
source: https://ogp.me/#metadata

[Chocobozzz]

@PeterAlfonsLoch It's what dailymotion, youtube or vimeo already do. I don't say they are doing it correctly, but we need to keep consistency with existing video platforms.