diff --git a/src/wp-admin/js/widgets/media-video-widget.js b/src/wp-admin/js/widgets/media-video-widget.js
index 4af062054d..ddaaf5f3f5 100644
--- a/src/wp-admin/js/widgets/media-video-widget.js
+++ b/src/wp-admin/js/widgets/media-video-widget.js
@@ -138,11 +138,10 @@
 		 *
 		 * @deprecated since 4.9.
 		 *
-		 * @param {String} url - Video url.
 		 * @returns {boolean} Whether url is a supported video host.
 		 */
 		isHostedVideo: function isHostedVideo() {
-			return false;
+			return true;
 		},
 
 		/**
diff --git a/src/wp-admin/js/widgets/media-widgets.js b/src/wp-admin/js/widgets/media-widgets.js
index ad21e37a7e..b8e8d5dc65 100644
--- a/src/wp-admin/js/widgets/media-widgets.js
+++ b/src/wp-admin/js/widgets/media-widgets.js
@@ -84,6 +84,23 @@ wp.mediaWidgets = ( function( $ ) {
 	 */
 	component.MediaEmbedView = wp.media.view.Embed.extend({
 
+		/**
+		 * Initialize.
+		 *
+		 * @since 4.9.0
+		 *
+		 * @param {object} options - Options.
+		 * @returns {void}
+		 */
+		initialize: function( options ) {
+			var view = this, embedController; // eslint-disable-line consistent-thi
+			wp.media.view.Embed.prototype.initialize.call( view, options );
+			if ( 'image' !== view.controller.options.mimeType ) {
+				embedController = view.controller.states.get( 'embed' );
+				embedController.off( 'scan', embedController.scanImage, embedController );
+			}
+		},
+
 		/**
 		 * Refresh embed view.
 		 *
@@ -139,6 +156,33 @@ wp.mediaWidgets = ( function( $ ) {
 						}
 					},
 
+					/**
+					 * Update oEmbed.
+					 *
+					 * @since 4.9.0
+					 *
+					 * @returns {void}
+					 */
+					updateoEmbed: function() {
+						var embedLinkView = this, url; // eslint-disable-line consistent-this
+
+						url = embedLinkView.model.get( 'url' );
+
+						// Abort if the URL field was emptied out.
+						if ( ! url ) {
+							embedLinkView.setErrorNotice( '' );
+							embedLinkView.setAddToWidgetButtonDisabled( true );
+							return;
+						}
+
+						if ( ! url.match( /^(http|https):\/\/.+\// ) ) {
+							embedLinkView.controller.$el.find( '#embed-url-field' ).addClass( 'invalid' );
+							embedLinkView.setAddToWidgetButtonDisabled( true );
+						}
+
+						wp.media.view.EmbedLink.prototype.updateoEmbed.call( embedLinkView );
+					},
+
 					/**
 					 * Fetch media.
 					 *
@@ -146,17 +190,12 @@ wp.mediaWidgets = ( function( $ ) {
 					 */
 					fetch: function() {
 						var embedLinkView = this, fetchSuccess, matches, fileExt, urlParser, url, re, youTubeEmbedMatch; // eslint-disable-line consistent-this
+						url = embedLinkView.model.get( 'url' );
 
 						if ( embedLinkView.dfd && 'pending' === embedLinkView.dfd.state() ) {
 							embedLinkView.dfd.abort();
 						}
 
-						// Abort if the URL field was emptied out.
-						if ( ! embedLinkView.model.get( 'url' ) ) {
-							embedLinkView.setErrorNotice( '' );
-							return;
-						}
-
 						fetchSuccess = function( response ) {
 							embedLinkView.renderoEmbed({
 								data: {
@@ -164,13 +203,13 @@ wp.mediaWidgets = ( function( $ ) {
 								}
 							});
 
-							$( '#embed-url-field' ).removeClass( 'invalid' );
+							embedLinkView.controller.$el.find( '#embed-url-field' ).removeClass( 'invalid' );
 							embedLinkView.setErrorNotice( '' );
 							embedLinkView.setAddToWidgetButtonDisabled( false );
 						};
 
 						urlParser = document.createElement( 'a' );
-						urlParser.href = embedLinkView.model.get( 'url' );
+						urlParser.href = url;
 						matches = urlParser.pathname.toLowerCase().match( /\.(\w+)$/ );
 						if ( matches ) {
 							fileExt = matches[1];
@@ -185,7 +224,6 @@ wp.mediaWidgets = ( function( $ ) {
 						}
 
 						// Support YouTube embed links.
-						url = embedLinkView.model.get( 'url' );
 						re = /https?:\/\/www\.youtube\.com\/embed\/([^/]+)/;
 						youTubeEmbedMatch = re.exec( url );
 						if ( youTubeEmbedMatch ) {
@@ -228,7 +266,7 @@ wp.mediaWidgets = ( function( $ ) {
 					 */
 					renderFail: function renderFail() {
 						var embedLinkView = this; // eslint-disable-line consistent-this
-						$( '#embed-url-field' ).addClass( 'invalid' );
+						embedLinkView.controller.$el.find( '#embed-url-field' ).addClass( 'invalid' );
 						embedLinkView.setErrorNotice( embedLinkView.controller.options.invalidEmbedTypeError || 'ERROR' );
 						embedLinkView.setAddToWidgetButtonDisabled( true );
 					}
diff --git a/src/wp-includes/widgets/class-wp-widget-media-video.php b/src/wp-includes/widgets/class-wp-widget-media-video.php
index b129527d84..96196e60f9 100644
--- a/src/wp-includes/widgets/class-wp-widget-media-video.php
+++ b/src/wp-includes/widgets/class-wp-widget-media-video.php
@@ -41,7 +41,7 @@ class WP_Widget_Media_Video extends WP_Widget_Media {
 			'media_library_state_multi' => _n_noop( 'Video Widget (%d)', 'Video Widget (%d)' ),
 			'media_library_state_single' => __( 'Video Widget' ),
 			/* translators: %s: a list of valid video file extensions */
-			'unsupported_file_type' => sprintf( __( 'Sorry, we can&#8217;t display the video file type selected. Please select a supported video file (%s) or stream (e.g. YouTube and Vimeo) instead.' ), '<code>.' . implode( '</code>, <code>.', wp_get_video_extensions() ) . '</code>' ),
+			'unsupported_file_type' => sprintf( __( 'Sorry, we can&#8217;t load the video at the supplied URL. Please check that the URL is for a supported video file (%s) or stream (e.g. YouTube and Vimeo).' ), '<code>.' . implode( '</code>, <code>.', wp_get_video_extensions() ) . '</code>' ),
 		) );
 	}