/** * Exports the audio in the desired format, applies registered filters. * * @param FormatInterface $format * @param string $outputPathfile * * @return Audio * * @throws RuntimeException */ public function save(FormatInterface $format, $outputPathfile) { $listeners = null; if ($format instanceof ProgressableInterface) { $listeners = $format->createProgressListener($this, $this->ffprobe, 1, 1); } $commands = array('-y', '-i', $this->filePath); $filters = clone $this->filters; $filters->add(new SimpleFilter($format->getExtraParams(), 10)); if ($this->driver->getConfiguration()->has('ffmpeg.threads')) { $filters->add(new SimpleFilter(array('-threads', $this->driver->getConfiguration()->get('ffmpeg.threads')))); } if (null !== $format->getAudioCodec()) { $filters->add(new SimpleFilter(array('-acodec', $format->getAudioCodec()))); } foreach ($filters as $filter) { $commands = array_merge($commands, $filter->apply($this, $format)); } if (null !== $format->getAudioKiloBitrate()) { $commands[] = '-b:a'; $commands[] = $format->getAudioKiloBitrate() . 'k'; } if (null !== $format->getAudioChannels()) { $commands[] = '-ac'; $commands[] = $format->getAudioChannels(); } $commands[] = $outputPathfile; try { $this->driver->command($commands, false, $listeners); } catch (ExecutionFailureException $e) { $this->cleanupTemporaryFile($outputPathfile); throw new RuntimeException('Encoding failed', $e->getCode(), $e); } return $this; }