getid3_ogg::get_quality_from_nominal_bitrate() –
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Description
Usage
$float = getid3_ogg::get_quality_from_nominal_bitrate( $nominal_bitrate );
Parameters
- $nominal_bitrate
- ( int ) required –
Returns
float
Source
File name: wordpress/wp-includes/ID3/module.audio.ogg.php
Lines:
1 to 22 of 22
public static function get_quality_from_nominal_bitrate($nominal_bitrate) { // decrease precision $nominal_bitrate = $nominal_bitrate / 1000; if ($nominal_bitrate < 128) { // q-1 to q4 $qval = ($nominal_bitrate - 64) / 16; } elseif ($nominal_bitrate < 256) { // q4 to q8 $qval = $nominal_bitrate / 32; } elseif ($nominal_bitrate < 320) { // q8 to q9 $qval = ($nominal_bitrate + 256) / 64; } else { // q9 to q10 $qval = ($nominal_bitrate + 1300) / 180; } //return $qval; // 5.031324 //return intval($qval); // 5 return round($qval, 1); // 5 or 4.9 }