Specifies whether pass through (transmuxing) is enabled or
not. If set to true, the rest of the settings, other
than mapping, will be ignored. The default is false.
The codec for this audio stream. The default is aac.
Supported audio codecs:
Required. Audio bitrate in bits per second.
Must be between 1 and 10,000,000.
Number of audio channels. Must be between 1
and 6. The default is 2.
A list of channel names specifying layout of the audio
channels. This only affects the metadata embedded in the
container headers, if supported by the specified format. The
default is [fl, fr].
Supported channel names:
- fl - Front left channel
- fr - Front right channel
- sl - Side left channel
- sr - Side right channel
- fc - Front center channel
- lfe - Low frequency