Source
File: wp-includes/widgets/class-wp-widget-media-video.php
public function __construct() {
parent::__construct(
'media_video',
__( 'Video' ),
array(
'description' => __( 'Displays a video from the media library or from YouTube, Vimeo, or another provider.' ),
'mime_type' => 'video',
)
);
$this->l10n = array_merge(
$this->l10n,
array(
'no_media_selected' => __( 'No video selected' ),
'add_media' => _x( 'Add Video', 'label for button in the video widget' ),
'replace_media' => _x( 'Replace Video', 'label for button in the video widget; should preferably not be longer than ~13 characters long' ),
'edit_media' => _x( 'Edit Video', 'label for button in the video widget; should preferably not be longer than ~13 characters long' ),
'missing_attachment' => sprintf(
/* translators: %s: URL to media library. */
__( 'We can’t find that video. Check your <a href="%s">media library</a> and make sure it wasn’t deleted.' ),
esc_url( admin_url( 'upload.php' ) )
),
/* translators: %d: Widget count. */
'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’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>' ),
)
);
}