Header video does not load below 900px after resized and refreshed.

[sachyya sachet]

Header Media video does not load on screen size less than 900px after resized and refreshed. Instead Header Media Image is loaded.

Tested on Twenty Seventeen theme and WordPress version 4.8.2.

Steps:
Set the video URL in the customizer's Header Media.
Resize the screen and refreshed below 900px.
The video does not load instead header image is shown.

[sabernhardt]

Hi and thanks for the report!

This is intentional, though the values were somewhat arbitrary (see ticket:38172#comment:61).

You could use the header_video_settings hook to reduce the minimum width and height.

function wptrac_header_video_settings( $settings ) {
	$settings['minWidth']  = 700;
	$settings['minHeight'] = 300;
	return $settings;
}
add_filter( 'header_video_settings', 'wptrac_header_video_settings' );