Average bitrate in bits/second.
Specifies the bitstream mode (bsmod) for the emitted AC-3 stream.
Mono, Stereo, or 5.1 channel layout.
Sets the dialnorm of the output.
If set to filmStandard, adds dynamic range compression signaling to the output bitstream as defined in the Dolby Digital specification.
When set to enabled, applies a 120Hz lowpass filter to the LFE channel prior to encoding.
Metadata control.