diff --git a/wp-content/themes/twentyseventeen/assets/css/ie8.css b/wp-content/themes/twentyseventeen/assets/css/ie8.css
index 83342bafbe..bf45c26cb8 100644
--- a/wp-content/themes/twentyseventeen/assets/css/ie8.css
+++ b/wp-content/themes/twentyseventeen/assets/css/ie8.css
@@ -65,7 +65,7 @@ img {
 	display: block;
 }
 
-.custom-header-image {
+.custom-header-media {
 	background-position: bottom center;
 }
 
@@ -84,8 +84,7 @@ img {
 	width: 100%;
 }
 
-.has-header-image .custom-header-image img,
-.has-header-image .custom-header-image video {
+.has-header-image .custom-header-media img {
 	left: 0;
 	top: 0;
 }
@@ -142,8 +141,8 @@ img {
 	padding-top: 0;
 }
 
-.twentyseventeen-front-page .custom-header-image,
-.blog.home .custom-header-image {
+.twentyseventeen-front-page .custom-header-media,
+.blog.home .custom-header-media {
 	background-position: center center;
 }
 
diff --git a/wp-content/themes/twentyseventeen/assets/css/ie9.css b/wp-content/themes/twentyseventeen/assets/css/ie9.css
index 24c8905162..9f8f7664da 100644
--- a/wp-content/themes/twentyseventeen/assets/css/ie9.css
+++ b/wp-content/themes/twentyseventeen/assets/css/ie9.css
@@ -4,22 +4,26 @@ Description: IE9 specific styles.
 */
 
 .has-header-image.twentyseventeen-front-page .custom-header,
-.has-header-image.home.blog .custom-header {
+.has-header-video.twentyseventeen-front-page .custom-header,
+.has-header-image.home.blog .custom-header,
+.has-header-video.home.blog .custom-header {
 	height: 300px;
 }
 
-.has-header-image .custom-header-image img,
-.has-header-image .custom-header-image video,
-.has-header-image .custom-header-image iframe {
+.has-header-image .custom-header-media img,
+.has-header-video .custom-header-media video,
+.has-header-video .custom-header-media iframe {
 	min-width: 100%;
 }
 
 @media screen and (min-width: 30em) {
 
 	.has-header-image.twentyseventeen-front-page .custom-header,
+	.has-header-video.twentyseventeen-front-page .custom-header,
 	.has-header-image.home.blog .custom-header,
-	.twentyseventeen-front-page.has-header-image .custom-header-image,
-	.home.blog.has-header-image .custom-header-image,
+	.has-header-video.home.blog .custom-header,
+	.twentyseventeen-front-page.has-header-image .custom-header-media,
+	.home.blog.has-header-image .custom-header-media,
 	.panel-image {
 		height: 700px;
 	}
@@ -28,9 +32,11 @@ Description: IE9 specific styles.
 @media screen and (min-width: 48em) {
 
 	.has-header-image.twentyseventeen-front-page .custom-header,
+	.has-header-video.twentyseventeen-front-page .custom-header,
 	.has-header-image.home.blog .custom-header,
-	.twentyseventeen-front-page.has-header-image .custom-header-image,
-	.home.blog.has-header-image .custom-header-image,
+	.has-header-video.home.blog .custom-header,
+	.twentyseventeen-front-page.has-header-image .custom-header-media,
+	.home.blog.has-header-image .custom-header-media,
 	.panel-image {
 		height: 1000px;
 	}
diff --git a/wp-content/themes/twentyseventeen/assets/js/customize-preview.js b/wp-content/themes/twentyseventeen/assets/js/customize-preview.js
index 651e034b84..11c9ed46ae 100644
--- a/wp-content/themes/twentyseventeen/assets/js/customize-preview.js
+++ b/wp-content/themes/twentyseventeen/assets/js/customize-preview.js
@@ -123,11 +123,15 @@
 	$.each( [ 'external_header_video', 'header_image', 'header_video' ], function( index, settingId ) {
 		wp.customize( settingId, function( setting ) {
 			setting.bind(function() {
-				if ( hasHeaderImage() || ( hasHeaderVideo() && $( 'body' ).hasClass( 'twentyseventeen-front-page' ) ) ) {
+				if ( hasHeaderImage() ) {
 					$( document.body ).addClass( 'has-header-image' );
 				} else {
 					$( document.body ).removeClass( 'has-header-image' );
 				}
+
+				if ( ! hasHeaderVideo() ) {
+					$( document.body ).removeClass( 'has-header-video' );
+				}
 			} );
 		} );
 	} );
diff --git a/wp-content/themes/twentyseventeen/assets/js/global.js b/wp-content/themes/twentyseventeen/assets/js/global.js
index cb8a6ec92f..6e2f42902e 100644
--- a/wp-content/themes/twentyseventeen/assets/js/global.js
+++ b/wp-content/themes/twentyseventeen/assets/js/global.js
@@ -4,7 +4,6 @@
 	// Variables and DOM Caching.
 	var $body = $( 'body' ),
 		$customHeader = $body.find( '.custom-header' ),
-		$customHeaderImage = $customHeader.find( '.custom-header-image' ),
 		$branding = $customHeader.find( '.site-branding' ),
 		$navigation = $body.find( '.navigation-top' ),
 		$navWrap = $navigation.find( '.wrap' ),
@@ -64,8 +63,8 @@
 			// Make sure the nav isn't taller than two rows.
 			if ( navIsNotTooTall ) {
 
-				// When there's a custom header image, the header offset includes the height of the navigation.
-				if ( isFrontPage && $customHeaderImage.length ) {
+				// When there's a custom header image or video, the header offset includes the height of the navigation.
+				if ( isFrontPage && ( $body.hasClass( 'has-header-image' ) || $body.hasClass( 'has-header-video' ) ) ) {
 					headerOffset = $customHeader.innerHeight() - navigationOuterHeight;
 				} else {
 					headerOffset = $customHeader.innerHeight();
@@ -242,4 +241,9 @@
 		setTimeout( adjustHeaderHeight, 1000 );
 	});
 
+	// Add header video class after the video is loaded.
+	$( document ).on( 'wp-custom-header-video-loaded', function() {
+		$body.addClass( 'has-header-video' );
+	});
+
 })( jQuery );
diff --git a/wp-content/themes/twentyseventeen/inc/color-patterns.php b/wp-content/themes/twentyseventeen/inc/color-patterns.php
index a59e64457f..bd261ef73c 100644
--- a/wp-content/themes/twentyseventeen/inc/color-patterns.php
+++ b/wp-content/themes/twentyseventeen/inc/color-patterns.php
@@ -443,8 +443,11 @@ body.colors-custom,
 .colors-custom .next.page-numbers:focus,
 .colors-custom .next.page-numbers:hover,
 .colors-custom.has-header-image .site-title,
+.colors-custom.has-header-video .site-title,
 .colors-custom.has-header-image .site-title a,
-.colors-custom.has-header-image .site-description {
+.colors-custom.has-header-video .site-title a,
+.colors-custom.has-header-image .site-description,
+.colors-custom.has-header-video .site-description {
 	color: hsl( ' . $hue . ', ' . $saturation . ', 100% ); /* base: #fff; */
 }
 
diff --git a/wp-content/themes/twentyseventeen/inc/template-functions.php b/wp-content/themes/twentyseventeen/inc/template-functions.php
index 4479f3788a..6b136c4765 100644
--- a/wp-content/themes/twentyseventeen/inc/template-functions.php
+++ b/wp-content/themes/twentyseventeen/inc/template-functions.php
@@ -35,7 +35,7 @@ function twentyseventeen_body_classes( $classes ) {
 	}
 
 	// Add a class if there is a custom header.
-	if ( has_header_image() || has_header_video() && is_front_page() ) {
+	if ( has_header_image() ) {
 		$classes[] = 'has-header-image';
 	}
 
diff --git a/wp-content/themes/twentyseventeen/style.css b/wp-content/themes/twentyseventeen/style.css
index 8b0e4faa30..2c323193f2 100644
--- a/wp-content/themes/twentyseventeen/style.css
+++ b/wp-content/themes/twentyseventeen/style.css
@@ -1581,7 +1581,9 @@ body {
 }
 
 body.has-header-image .site-title,
-body.has-header-image .site-title a {
+body.has-header-video .site-title,
+body.has-header-image .site-title a,
+body.has-header-video .site-title a {
 	color: #fff;
 }
 
@@ -1592,7 +1594,8 @@ body.has-header-image .site-title a {
 	margin-bottom: 0;
 }
 
-body.has-header-image .site-description {
+body.has-header-image .site-description,
+body.has-header-video .site-description {
 	color: #fff;
 	opacity: 0.8;
 }
@@ -1610,7 +1613,8 @@ body.has-header-image .site-description {
 	width: auto;
 }
 
-body.home.title-tagline-hidden.has-header-image .custom-logo-link img {
+body.home.title-tagline-hidden.has-header-image .custom-logo-link img,
+body.home.title-tagline-hidden.has-header-video .custom-logo-link img {
 	max-height: 200px;
 	max-width: 100%;
 }
@@ -1630,14 +1634,16 @@ body:not(.title-tagline-hidden) .site-branding-text {
 }
 
 .has-header-image.twentyseventeen-front-page .custom-header,
-.has-header-image.home.blog .custom-header {
+.has-header-video.twentyseventeen-front-page .custom-header,
+.has-header-image.home.blog .custom-header,
+.has-header-video.home.blog .custom-header {
 	display: table;
 	height: 300px;
 	height: 75vh;
 	width: 100%;
 }
 
-.custom-header-image {
+.custom-header-media {
 	bottom: 0;
 	left: 0;
 	overflow: hidden;
@@ -1647,7 +1653,7 @@ body:not(.title-tagline-hidden) .site-branding-text {
 	width: 100%;
 }
 
-.custom-header-image:before {
+.custom-header-media:before {
 	/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#000000+0,000000+100&0+0,0.3+75 */
 	background: -moz-linear-gradient(to top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.3) 75%, rgba(0, 0, 0, 0.3) 100%); /* FF3.6-15 */
 	background: -webkit-linear-gradient(to top, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.3) 75%, rgba(0, 0, 0, 0.3) 100%); /* Chrome10-25,Safari5.1-6 */
@@ -1663,9 +1669,9 @@ body:not(.title-tagline-hidden) .site-branding-text {
 	z-index: 2;
 }
 
-.has-header-image .custom-header-image img,
-.has-header-image .custom-header-image video,
-.has-header-image .custom-header-image iframe {
+.has-header-image .custom-header-media img,
+.has-header-video .custom-header-media video,
+.has-header-video .custom-header-media iframe {
 	position: fixed;
 	height: auto;
 	left: 50%;
@@ -1708,7 +1714,7 @@ body:not(.title-tagline-hidden) .site-branding-text {
 	top: 62px;
 }
 
-.has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-image img {
+.has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-media img {
 	bottom: 0;
 	position: absolute;
 	top: auto;
@@ -1720,12 +1726,14 @@ body:not(.title-tagline-hidden) .site-branding-text {
 
 /* Hides div in Customizer preview when header images or videos change. */
 
-body:not(.has-header-image) .custom-header-image {
+body:not(.has-header-image):not(.has-header-video) .custom-header-media {
 	display: none;
 }
 
 .has-header-image.twentyseventeen-front-page .site-branding,
-.has-header-image.home.blog .site-branding {
+.has-header-video.twentyseventeen-front-page .site-branding,
+.has-header-image.home.blog .site-branding,
+.has-header-video.home.blog .site-branding {
 	display: table-cell;
 	height: 100%;
 	vertical-align: bottom;
@@ -3275,7 +3283,9 @@ object {
 	}
 
 	.has-header-image.twentyseventeen-front-page .site-branding,
-	.has-header-image.home.blog .site-branding {
+	.has-header-video.twentyseventeen-front-page .site-branding,
+	.has-header-image.home.blog .site-branding,
+	.has-header-video.home.blog .site-branding {
 		bottom: 0;
 		display: block;
 		left: 0;
@@ -3286,23 +3296,28 @@ object {
 	}
 
 	.has-header-image.twentyseventeen-front-page .custom-header,
-	.has-header-image.home.blog .custom-header {
+	.has-header-video.twentyseventeen-front-page .custom-header,
+	.has-header-image.home.blog .custom-header,
+	.has-header-video.home.blog .custom-header {
 		display: block;
 		height: auto;
 	}
 
-	.custom-header-image {
+	.custom-header-media {
 		height: 165px;
 		position: relative;
 	}
 
-	.twentyseventeen-front-page.has-header-image .custom-header-image,
-	.home.blog.has-header-image .custom-header-image {
+	.twentyseventeen-front-page.has-header-image .custom-header-media,
+	.twentyseventeen-front-page.has-header-video .custom-header-media,
+	.home.blog.has-header-image .custom-header-media,
+	.home.blog.has-header-video .custom-header-media {
 		height: 0;
 		position: relative;
 	}
 
-	.has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-image {
+	.has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-media,
+	.has-header-video:not(.twentyseventeen-front-page):not(.home) .custom-header-media {
 		bottom: 0;
 		height: auto;
 		left: 0;
@@ -3316,11 +3331,13 @@ object {
 	}
 
 	.custom-logo-link img,
-	body.home.title-tagline-hidden.has-header-image .custom-logo-link img {
+	body.home.title-tagline-hidden.has-header-image .custom-logo-link img,
+	body.home.title-tagline-hidden.has-header-video .custom-logo-link img {
 		max-width: 350px;
 	}
 
-	.title-tagline-hidden.home.has-header-image .custom-logo-link img {
+	.title-tagline-hidden.home.has-header-image .custom-logo-link img,
+	.title-tagline-hidden.home.has-header-video .custom-logo-link img {
 		max-height: 200px;
 	}
 
@@ -3582,25 +3599,33 @@ object {
 	/* Front Page */
 
 	.twentyseventeen-front-page.has-header-image .site-branding,
-	.home.blog.has-header-image .site-branding {
+	.twentyseventeen-front-page.has-header-video .site-branding,
+	.home.blog.has-header-image .site-branding,
+	.home.blog.has-header-video .site-branding {
 		margin-bottom: 70px;
 	}
 
-	.twentyseventeen-front-page.has-header-image .custom-header-image,
-	.home.blog.has-header-image .custom-header-image {
+	.twentyseventeen-front-page.has-header-image .custom-header-media,
+	.twentyseventeen-front-page.has-header-video .custom-header-media,
+	.home.blog.has-header-image .custom-header-media,
+	.home.blog.has-header-video .custom-header-media {
 		height: 1200px;
 		height: 100vh;
 		max-height: 100%;
 		overflow: hidden;
 	}
 
-	.twentyseventeen-front-page.has-header-image .custom-header-image:before,
-	.home.blog.has-header-image .custom-header-image:before {
+	.twentyseventeen-front-page.has-header-image .custom-header-media:before,
+	.twentyseventeen-front-page.has-header-video .custom-header-media:before,
+	.home.blog.has-header-image .custom-header-media:before,
+	.home.blog.has-header-video .custom-header-media:before {
 		height: 33%;
 	}
 
-	.admin-bar.twentyseventeen-front-page.has-header-image .custom-header-image,
-	.admin-bar.home.blog.has-header-image .custom-header-image {
+	.admin-bar.twentyseventeen-front-page.has-header-image .custom-header-media,
+	.admin-bar.twentyseventeen-front-page.has-header-video .custom-header-media,
+	.admin-bar.home.blog.has-header-image .custom-header-media,
+	.admin-bar.home.blog.has-header-video .custom-header-media {
 		height: calc(100vh - 32px);
 	}
 
@@ -4114,12 +4139,14 @@ object {
 		padding: 0;
 	}
 
-	.custom-header-image {
+	.custom-header-media {
 		padding: 0;
 	}
 
 	.twentyseventeen-front-page.has-header-image .site-branding,
-	.home.blog.has-header-image .site-branding {
+	.twentyseventeen-front-page.has-header-video .site-branding,
+	.home.blog.has-header-image .site-branding,
+	.home.blog.has-header-video .site-branding {
 		position: relative;
 	}
 
@@ -4158,7 +4185,9 @@ object {
 	a,
 	.site-title a,
 	.twentyseventeen-front-page.has-header-image .site-title,
-	.twentyseventeen-front-page.has-header-image .site-title a {
+	.twentyseventeen-front-page.has-header-video .site-title,
+	.twentyseventeen-front-page.has-header-image .site-title a,
+	.twentyseventeen-front-page.has-header-video .site-title a {
 		color: #222 !important; /* Make sure color schemes don't affect to print */
 	}
 
@@ -4167,6 +4196,7 @@ object {
 	blockquote,
 	.site-description,
 	.twentyseventeen-front-page.has-header-image .site-description,
+	.twentyseventeen-front-page.has-header-video .site-description,
 	.entry-meta,
 	.entry-meta a {
 		color: #777 !important; /* Make sure color schemes don't affect to print */
diff --git a/wp-content/themes/twentyseventeen/template-parts/header/header-image.php b/wp-content/themes/twentyseventeen/template-parts/header/header-image.php
index 5dea9d812e..6398b22d77 100644
--- a/wp-content/themes/twentyseventeen/template-parts/header/header-image.php
+++ b/wp-content/themes/twentyseventeen/template-parts/header/header-image.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Displays header image
+ * Displays header media
  *
  * @package WordPress
  * @subpackage Twenty_Seventeen
@@ -11,7 +11,7 @@
 ?>
 <div class="custom-header">
 
-	<div class="custom-header-image">
+	<div class="custom-header-media">
 		<?php the_custom_header_markup(); ?>
 	</div>
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index bcb48c1418..77f3f84015 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-RC1-39412';
+$wp_version = '4.7-RC1-39414';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.