Export audio

After importing a sound wave, you may want to export it to memory or a file. The plugin provides functionality to export audio in various formats, with options to override the sample rate (resampling) and the number of channels (mixing).

Supported audio formats

The plugin supports exporting to the following audio formats:

• WAV - Waveform Audio File Format
• OGG VORBIS - Ogg container with Vorbis audio
• OGG OPUS - Ogg container with Opus audio
• BINK - Bink Audio (Windows x64, Mac, and Linux in UE >= 5.0 only)
• RAW (PCM) - Uncompressed Pulse-Code Modulation audio data (Int8, UInt8, Int16, UInt16, Int32, UInt32, Float32)

Examples

Blueprint

C++

// Assuming ImportedSoundWave is a UE reference to a UImportedSoundWave object (or its derived type, such as UStreamingSoundWave, UCapturableSoundWave, etc.)

// Export the sound wave to a file
URuntimeAudioExporter::ExportSoundWaveToFile(ImportedSoundWave, TEXT("C:/ExportedAudio.ogg"), ERuntimeAudioFormat::OggVorbis, 100,
   FRuntimeAudioExportOverrideOptions(),
   FOnAudioExportToFileResultNative::CreateWeakLambda(this, [this](bool bSucceeded)
   {
       // Handle the result
   }));

// Export the sound wave to a RAW file
URuntimeAudioExporter::ExportSoundWaveToRAWFile(ImportedSoundWave, TEXT("C:/ExportedAudio.raw"), ERuntimeRAWAudioFormat::UInt16,
   FRuntimeAudioExportOverrideOptions(),
   FOnAudioExportToFileResultNative::CreateWeakLambda(this, [this](bool bSucceeded)
   {
       // Handle the result
   }));

// Export the sound wave to a buffer
URuntimeAudioExporter::ExportSoundWaveToBuffer(ImportedSoundWave, ERuntimeAudioFormat::Wav, 100,
   FRuntimeAudioExportOverrideOptions(),
   FOnAudioExportToBufferResultNative::CreateWeakLambda(this, [this](bool bSucceeded, const TArray64<uint8>& AudioData)
   {
       // Handle the result
   }));

// Export the sound wave to a RAW buffer
URuntimeAudioExporter::ExportSoundWaveToRAWBuffer(ImportedSoundWave, ERuntimeRAWAudioFormat::Float32,
   FRuntimeAudioExportOverrideOptions(),
   FOnAudioExportToBufferResultNative::CreateWeakLambda(this, [this](bool bSucceeded, const TArray64<uint8>& AudioData)
   {
       // Handle the result
   }));