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c++qtqt5codecqtmultimedia

How to select the parameter of the setCodec() function for audio recording in Qt

I'm using QAudioRecorder in Qt to record a voice, here is the sample code.

audioRecorder = new QAudioRecorder;

QAudioEncoderSettings audioSettings;
audioSettings.setCodec("audio/amr"); //here's my question
audioSettings.setQuality(QMultimedia::HighQuality);

audioRecorder->setEncodingSettings(audioSettings);

audioRecorder->setOutputLocation(QUrl::fromLocalFile("test.amr"));
audioRecorder->record();

But I have no idea how to use the setCodec() function

void QAudioEncoderSettings::setCodec(const QString & codec)

How can find out which parameter (such as "audio/amr" or "audio/x-wav") I can use and their exact meanings? Thanks!

Solution

  • You could see the codec candidate in the source code for the different plugins.

    • GStreamer
      • audio/mpeg
      • audio/vorbis
      • audio/speex
      • audio/GSM
      • audio/PCM
      • audio/AMR
      • audio/AMR-WB
      • audio/FLAC

    • AudioCapture
      • audio/pcm

    • QNX
      • aac
      • raw