Audio/Video file postprocessing

You can use these methods to transform existing audio either in a video or audio file.

Transform audio

Call this method to transform a audio file, any CoreAudio supported format
would work, if the audio file is compressed the output audio file will be compressed
with the same format. You can get a full list of the voices name using getPresetsNames method.

Transform video

Call this method to transform the audio of a video. The output video file will be
the same size as input video compressed using AVFileTypeMPEG4 with optimized for network use. You can get a full list of the voices name using getPresetsNames method.