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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 |
|---|---|
| 3643 | * |
| 3644 | * @since 4.9.0 |
| 3645 | * |
| 3646 | * @param array $metadata Filtered video metadata. |
| 3647 | * @param string $file Path to video file. |
| 3648 | * @param string|null $file_format File format of video, as analyzed by getID3. |
| 3649 | * Null if unknown. |
| 3650 | * @param array $data Raw metadata from getID3. |
| 3651 | */ |
| 3652 | return apply_filters( 'wp_read_video_metadata', $metadata, $file, $file_format, $data ); |
| 3653 | } |
| 3654 | |
| 3655 | /** |
| 3656 | * Retrieves metadata from an audio file's ID3 tags. |
| 3657 | * |
| 3658 | * @since 3.6.0 |
| 3659 | * |
| 3660 | * @param string $file Path to file. |
| 3661 | * @return array|false Returns array of metadata, if found. |