u-video draft->core bc way more than 3+ pub and consuming impls/sites

[tantek]

It appears from http://indieweb.org/video#IndieWeb_Examples that there are way more than 3+ publishing sites that support u-video

• Need to verify proper markup on those examples!

For consuming, known implementations include:

• 1. Bridgy Publish supports consuming h-entry with u-video (for POSSEing to Twitter, Facebook, Flickr, e.g. this post http://tantek.com/2016/055/t12/fast-walk-hike-beach-video used Bridgy to do that)
• 2. Woodwind.xyz (pretty sure - need to verify it embeds video in a usable way)
• Others?
  ** Need to determine what other kinds of u-video consuming code / libraries / applications there may be

This issue is for tracking the maturity of u-video to transition it to a core property.

Once all the "Need to" items above have been processed and resolved successfully, we should be able to move forward.

cc: @kylewm @benwerd @snarfed

[snarfed]

example markup that bridgy consumes, from https://brid.gy/about#video :

<video class="u-video" src="/cat_hunting.mp4">
  Kitty is on the hunt!
</video>

[snarfed]

Update: now done!

...and huh, thanks for the nudge. evidently bridgy/granary (same single implementation) don't actually render silo video posts as <video class="u-video"> yet. they only include links and thumbnail/poster images. i'll file an issue!

examples for the POSSE copies of tantek's original post above:

• https://brid.gy/post/flickr/39039882@N00/24615676754
• https://brid.gy/post/facebook/214611/10102143546607213
• https://brid.gy/post/twitter/t/702695028464812034

[dshanske]

The Post Kinds plugin for WordPress consumes u-video and will endeavor to display it if relevant.

[grantcodes]

Together consumes videos and shows them in the reader interface

[dshanske]

This property does need a short definition. Assume this matches the u-photo definition, so u-video is for one or more videos that are considered the primary content of the entry.