wp-includes/ID3/module.audio-video.flv.php:397$idintint|false public static function audioBitDepthLookup($id) { static $lookup = array( 0 => 8, 1 => 16, ); return (isset($lookup[$id]) ? $lookup[$id] : false); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.audio-video.flv.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.