protected function extract_video( $richtext, $plaintext, $extra_args = array() ) {
		$data   = array( 'has' => array( 'videos' => 0 ), 'videos' => array() );
		$videos = $this->extract_shortcodes( $richtext, $plaintext, $extra_args );

		$video_types = wp_get_video_extensions();


		// [video]
		$videos = wp_list_filter( $videos['shortcodes'], array( 'type' => 'video' ) );
		foreach ( $videos as $video ) {

			// Media URL can appear as the first parameter inside the shortcode brackets.
			if ( isset( $video['attributes']['src'] ) ) {
				$src_param = 'src';
			} elseif ( isset( $video['attributes'][0] ) ) {
				$src_param = 0;
			} else {
				continue;
			}

			$path = untrailingslashit( parse_url( $video['attributes'][ $src_param ], PHP_URL_PATH ) );

			foreach ( $video_types as $extension ) {
				$extension = '.' . $extension;

				// Check this URL's file extension matches that of an accepted video format (-5 for webm).
				if ( ! $path || ( substr( $path, -4 ) !== $extension && substr( $path, -5 ) !== $extension ) ) {
					continue;
				}

				$data['videos'][] = array(
					'original' => $video['original'],  // Entire shortcode.
					'source'   => 'shortcodes',
					'url'      => esc_url_raw( $video['attributes'][ $src_param ] ),
				);
			}
		}

		$data['has']['videos'] = count( $data['videos'] );

		/**
		 * Filters videos extracted from text.
		 *
		 * @since 2.3.0
		 *
		 * @param array  $data       Extracted videos. See {@link BP_Media_Extractor::extract_videos()} for format.
		 * @param string $richtext   Content to parse.
		 * @param string $plaintext  Copy of $richtext without any markup.
		 * @param array  $extra_args Bespoke data for a particular extractor.
		 */
		return apply_filters( 'bp_media_extractor_videos', $data, $richtext, $plaintext, $extra_args );
	}