Here is a screen shot of Youtube being embedded with a URL.

Here is a screen shot of VidYard being embedded with a URL, but not working

I'm not sure if this is Froala has a speacial handling for Youtube (and not VidYard), or if Youtube is doing something on their end..
The iFrame embed option does works for VidYard.
The editor supports by default Youtube, Vimeo, Dailymotion, Yahoo and Rutube. If you want to add a new video provider, then you should change the following object:
$.FE.VIDEO_PROVIDERS = [
{
test_regex: /^.*((youtu.be)|(youtube.com))\/((v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))?\??v?=?([^#\&\?]*).*/,
url_regex: /(?:https?:\/\/)?(?:www\.)?(?:m\.)?(?:youtube\.com|youtu\.be)\/(?:watch\?v=|embed\/)?([0-9a-zA-Z_\-]+)(.+)?/g,
url_text: '//www.youtube.com/embed/$1',
html: '<iframe width="640" height="360" src="{url}?wmode=opaque" frameborder="0" allowfullscreen></iframe>'
},
{
test_regex: /^.*(vimeo\.com\/)((channels\/[A-z]+\/)|(groups\/[A-z]+\/videos\/))?([0-9]+)/,
url_regex: /(?:https?:\/\/)?(?:www\.)?(?:vimeo\.com)\/(?:channels\/[A-z]+\/|groups\/[A-z]+\/videos\/)?(.+)/g,
url_text: '//player.vimeo.com/video/$1',
html: '<iframe width="640" height="360" src="{url}" frameborder="0" allowfullscreen></iframe>'
},
{
test_regex: /^.+(dailymotion.com|dai.ly)\/(video|hub)?\/?([^_]+)[^#]*(#video=([^_&]+))?/,
url_regex: /(?:https?:\/\/)?(?:www\.)?(?:dailymotion\.com|dai\.ly)\/(?:video|hub)?\/?(.+)/g,
url_text: '//www.dailymotion.com/embed/video/$1',
html: '<iframe width="640" height="360" src="{url}" frameborder="0" allowfullscreen></iframe>'
},
{
test_regex: /^.+(screen.yahoo.com)\/[^_&]+/,
url_regex: '',
url_text: '',
html: '<iframe width="640" height="360" src="{url}?format=embed" frameborder="0" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true" allowtransparency="true"></iframe>'
},
{
test_regex: /^.+(rutube.ru)\/[^_&]+/,
url_regex: /(?:https?:\/\/)?(?:www\.)?(?:rutube\.ru)\/(?:video)?\/?(.+)/g,
url_text: '//rutube.ru/play/embed/$1',
html: '<iframe width="640" height="360" src="{url}" frameborder="0" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true" allowtransparency="true"></iframe>'
}
];
Most helpful comment
The editor supports by default Youtube, Vimeo, Dailymotion, Yahoo and Rutube. If you want to add a new video provider, then you should change the following object: