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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1759 | |
| 1760 | /** |
| 1761 | * Filter the class attribute for the video shortcode output container. |
| 1762 | * |
| 1763 | * @since 3.6.0 |
| 1764 | * |
| 1765 | * @param string $class CSS class or list of space-separated classes. |
| 1766 | */ |
| 1767 | $atts = array( |
| 1768 | 'class' => apply_filters( 'wp_video_shortcode_class', 'wp-video-shortcode' ), |
| 1769 | 'id' => sprintf( 'video-%d-%d', $post_id, $instances ), |
| 1770 | 'width' => absint( $width ), |
| 1771 | 'height' => absint( $height ), |
| 1772 | 'poster' => esc_url( $poster ), |
| 1773 | 'loop' => $loop, |
| 1774 | 'autoplay' => $autoplay, |
| 1775 | 'preload' => $preload, |
| 1776 | ); |
| 1777 | |