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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 |
|---|---|
| 3487 | function wp_get_video_extensions() { |
| 3488 | /** |
| 3489 | * Filters the list of supported video formats. |
| 3490 | * |
| 3491 | * @since 3.6.0 |
| 3492 | * |
| 3493 | * @param string[] $extensions An array of supported video formats. Defaults are |
| 3494 | * 'mp4', 'm4v', 'webm', 'ogv', 'flv'. |
| 3495 | */ |
| 3496 | return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'flv' ) ); |
| 3497 | } |
| 3498 | |
| 3499 | /** |
| 3500 | * Builds the Video shortcode output. |
| 3501 | * |
| 3502 | * This implements the functionality of the Video Shortcode for displaying |
| 3503 | * WordPress mp4s in a post. |
| 3504 | * |
| 3505 | * @since 3.6.0 |