WordPress at a glance
filter is not described

is_header_video_active filter-hook . WP 4.7.0

Modify whether the custom header video is eligible to show on the current page.

Usage

add_filter( 'is_header_video_active', 'filter_function_name_313' );
function filter_function_name_313( $show_video ){
	// filter...

	return $show_video;
}
$show_video(true/false)
Whether the custom header video should be shown. Returns the value of the theme setting for the custom-header's video-active-callback. If no callback is set, the default value is that of is_front_page().

Where the hook is called

is_header_video_active()
wp-includes/theme.php 1455
return apply_filters( 'is_header_video_active', $show_video );

Where the hook is used (in WP core)

Does not used.