Allows changing the audio settings from that of the YouTube preset if necessary.

Base Audio Settings

- Stream Format
Encodes the audio in MPEG-4 AAC Low Complexity (LC) format. This format is generally used in smartphones, audio players, video sharing sites, etc.
* The value of this option is fixed at MPEG-4 AAC Low Complexity.

-Sampling Rate
Specifies the number of audio samples evaluated per second. 48000 and 96000 Hz are available.
* Usable values for playback may depend on the player device.

- Channel Mode
Specifies the number of channels for the compressed audio. Monaural, Stereo and 5.1ch Surround are available.

Specifies the quantity of audio data per second.
Available between 64 and 1280 kbps. 1280 kbps is better audio quality.
* Usable values are different depending on the sampling rate and the channel mode.