Audio Formats

Transform supports the following audio Format identifiers:

Format	Description
aac	Advanced Audio Coding (AAC)
ac3	Dolby Digital (AC-3)
eac3	Dolby Digital Plus (EAC-3)
atmos	Dolby Atmos (DD+JOC)
mpga	MPEG Layer 1/2
pcm_16int_little	PCM 16bit Little Endian
pcm_20int_little	PCM 20bit Little Endian
pcm_24int_little	PCM 24bit Little Endian

Advanced Audio Coding

The AAC format supports the following encoder configuration properties:

Property	Type	Description
BitRate	integer	6000, 7000, 8000, 10000, 12000, 14000, 16000, 20000, 24000, 28000, 32000, 40000, 48000, 56000, 64000, 80000, 96000, 112000, 128000, 160000, 192000, 224000, 256000, 320000, 384000, 448000, 512000, 640000, 768000, 896000, 1024000
Profile	enum	lc Low Complexity hev1 High Efficiency V1 hev2 High Efficiency V2 (Parametric Stereo)
MpegVersion	integer	0 MPEG-2 1 MPEG-4

Dolby Digital

The AC-3 and EAC-3 formats supports the following encoder configuration properties:

Property	Type	Description
AudioCodingMode	enum	See the Channel Configuration table blow.
EnableLowFrequencyEffects	boolean	See the Channel Configuration table blow.
BitRate	integer	32000 40000 48000 56000 64000 80000 96000 112000 128000 160000 192000 224000 256000 32000 384000 448000 512000 576000 640000
DialogNormalization	integer	Value in the range 1 to 31 representing a dialog normalization level between -1 and -31 dBFS.

See Audio Encoders for additional properties.

Channel Configuration

The following channel configurations are supported:

Channel Configuration	AudioCodingMode	EnableLowFrequencyEffects
1+1	0	false
1/0 C	1	false
2/0 L R	2	false
3/0 L C R	3	false
3/0 L C R LFE	3	true
2/1 L R Cs	4	false
2/1 L R Cs LFE	4	true
3/1 L C R Cs	5	false
3/1 L C R Cs LFE	5	true
2/2 L R Ls Rs	6	false
2/2 L R Ls Rs LFE	6	true
3/2 L C R Ls Rs	7	false
3/2 L C R Ls Rs LFE	7	true
3/4 L C R Ls Rs Lrs Rrs	21	false
3/4 L C R Ls Rs Lrs Rrs LFE	21	true

MPEG Audio

The MPEG audio format supports the following encoder configuration properties:

Property	Type	Description
BitRate	integer	32000 48000 56000 64000 80000 96000 112000 128000 160000 192000 224000 256000 288000 320000 352000 384000 416000 448000
Layer	integer	3 Layer 1 2 Layer 2
Version	integer	1 MPEG-1 0 MPEG-2