ibarmin

WP Easy Embed allows you to embed videos, images and such via <a href="http://oembed.com/" rel="nofollow ugc">OEmbed service</a> without manually editing the post (or page). 
If content provider support additional fields they can be used (right now only <a href="http://vimeo.com/api/docs/oembed" rel="nofollow ugc">vimeo ones</a> are supported)
<h4>i18n</h4>
Plugin is ready for l10n, just a little note – there are two language files to translate, 
languages/wp-easy-embed.pot and tinymce/langs/en.js
<h4>Plugin’s actions & filters</h4>
<ul>
<li>wp_easy_embed_config_{$config_key} filter</li>
<li>wp_easy_embed_init action. Runs before any button created</li>
<li>wp_easy_embed_additional_field_{$field_type} filter with $args parameter. See below.</li>
</ul>
<h4>Adding support for some provider additional fields</h4>
<ul>
<li>Add wp_easy_embed_config_supported_providers filter and push to passed array one more string – provider name (its domain name, please)</li>
<li>Add wp_easy_embed_config_supported_attributes_{$provider_name} filter and return assoc array in format, described in next section</li>
</ul>
<h4>Supported Atrributes Array Format</h4>
<pre><code>array(
 'Attribute name #1' => array('type' => 'text', 'value' => 'Default value', 'title' => 'Title for field #1')
 , 'Attribute name #2' => array('type' => 'checkbox', 'value' => [true|false], 'title' => 'Title for field #2')
 , 'Attribute name #3' => array('type'=>'select', 'values'=>array('value 1','value 2', ...), 'value' => 'Selected one', 'title' => 'Title for field #3')
 , 'Attribute name #4' => array('type' => 'your own type', 'value' => '', 'title' => 'Title for field #4')
)
</code></pre>
To add type, add filter handler for wp_easy_embed_additional_field_{$field_type} and return html. Name is 1st parameter and config for that attribute is passed in second parameter

WP Easy Embed

WP Easy Embed allows you to embed videos, images and such via OEmbed service without manually editing the post (or page)

webvitalii

<ul>
<li><a href="https://r.freemius.com/13759/8047958/" title="Advanced iFrame" rel="nofollow ugc">Advanced iFrame</a></li>
<li><a href="http://web-profile.net/wordpress/plugins/iframe/" title="Plugin page" rel="nofollow ugc">iframe</a></li>
<li><a href="http://web-profile.net/donate/" title="Support the development" rel="nofollow ugc">Donate</a></li>
<li><a href="https://github.com/webvitalii/iframe" title="Fork" rel="nofollow ugc">GitHub</a></li>
</ul>
[iframe src=”http://www.youtube.com/embed/7_nAZQt9qu0″ width=”100%” height=”500″] shortcode 
should show something like this:
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/7_nAZQt9qu0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
WordPress removes iframe html tags because of security reasons. 
Iframe shortcode is the replacement of the iframe html tag and accepts the same params as iframe html tag does. 
You may use iframe shortcode to embed content from YouTube, Vimeo, Google Maps or from any external page.
If you need to embed content from YouTube, Vimeo, SlideShare, SoundCloud, Twitter via direct link, you may use <code>[embed]http://www.youtube.com/watch?v=7_nAZQt9qu0[/embed]</code> shortcode. 
[embed] shortcode is a core WordPress feature and can <a href="https://codex.wordpress.org/Embeds" rel="nofollow ugc">embed content from many resources via direct link</a>.
Important: You can not embed HTTP pages into HTTPS pages and vice versa. 
So the protocol (http or httpS) for parent and embedded page should match.
<h4>iframe params:</h4>
<ul>
<li>src – source of the iframe: <code>[iframe src="http://www.youtube.com/embed/7_nAZQt9qu0"]</code>; by default src=”http://www.youtube.com/embed/7_nAZQt9qu0″;</li>
<li>width – width in pixels or in percents: <code>[iframe width="100%"]</code> or <code>[iframe width="600"]</code>; by default width=”100%”;</li>
<li>height – height in pixels: <code>[iframe height="500"]</code>; by default height=”500″;</li>
<li>scrolling – with or without the scrollbar: <code>[iframe scrolling="no"]</code>; by default scrolling=”yes”;</li>
<li>frameborder – with or without the frame border: <code>[iframe frameborder="0"]</code>; by default frameborder=”0″;</li>
<li>marginheight – height of the margin: <code>[iframe marginheight="0"]</code>; removed by default;</li>
<li>marginwidth – width of the margin: <code>[iframe marginwidth="0"]</code>; removed by default;</li>
<li>allowtransparency – allows to set transparency of the iframe: <code>[iframe allowtransparency="true"]</code>; removed by default;</li>
<li>id – allows to add the id of the iframe: <code>[iframe id="custom_id"]</code>; removed by default;</li>
<li>class – allows to add the class of the iframe: <code>[iframe class="custom_class"]</code>; by default class=”iframe-class”;</li>
<li>style – allows to add the css styles of the iframe: <code>[iframe style="margin-left:-30px;"]</code>; removed by default;</li>
<li>same_height_as – allows to set the height of iframe same as target element: <code>[iframe same_height_as="div.sidebar"]</code>, <code>[iframe same_height_as="div#content"]</code>, <code>[iframe same_height_as="body"]</code>, <code>[iframe same_height_as="html"]</code>; removed by default;</li>
<li>any_other_param – allows to add new parameter of the iframe <code>[iframe any_other_param="any_value"]</code>;</li>
<li>any_other_empty_param – allows to add new empty parameter of the iframe (like “allowfullscreen” on youtube) <code>[iframe any_other_empty_param=""]</code>;</li>
</ul>

iframe

[iframe src="http://www.youtube.com/embed/7_nAZQt9qu0" width="100%" height="500"] shortcode

WP Easy Embed vs iframe