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<?php
namespace App\Services\Streamers;
class TranscodingStreamer extends Streamer implements TranscodingStreamerInterface
{
/**
* Bit rate the stream should be transcoded at.
*
* @var int
*/
private $bitRate;
* Time point to start transcoding from.
* @var float
private $startTime;
* On-the-fly stream the current song while transcoding.
public function stream(): void
$ffmpeg = config('koel.streaming.ffmpeg_path');
abort_unless(is_executable($ffmpeg), 500, 'Transcoding requires valid ffmpeg settings.');
$bitRate = filter_var($this->bitRate, FILTER_SANITIZE_NUMBER_INT);
header('Content-Type: audio/mpeg');
header('Content-Disposition: attachment; filename="'.basename($this->song->path).'"');
$args = [
'-i '.escapeshellarg($this->song->path),
'-map 0:0',
'-v 0',
"-ab {$bitRate}k",
'-f mp3',
'-',
];
if ($this->startTime) {
array_unshift($args, "-ss {$this->startTime}");
}
passthru("$ffmpeg ".implode(' ', $args));
public function setBitRate(int $bitRate): void
$this->bitRate = $bitRate;
public function setStartTime(float $startTime): void
$this->startTime = $startTime;