Extract Audio Channels

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Extract Audio Channels

 

Purpose

 

To extract audio channels of the input media, providing a separate output for each audio channel, also providing meaningful metadata to be passed downstream (according to the different audio standards).

Note: This node does not "render" any output audio files by itself. What it does is to define the audio extraction metadata and pass it to posterior nodes (for example the selected outputs can be connected to encoder task nodes to render movie files, or to an Audio Router node for further channel selection or channel recombination from multiple files, or to an MP3 output node for rendering to .mp3 format).

 

 

Inputs

 

 

AV: A media file to extract its audio channels, which will be sent trough separate output connectors

 

 

Outputs

 

A variable number of audio channels (output connectors), with their metadata names and output order depending on the audio standard selected in the Preset property.

Note that some audio standards have the same number of channels but in different order, so it can be important to select the proper preset best representing your audio files (see below for more details)

 

 

Standard properties

 

Object Name

Color

Bypass

Lock

 

 

Node specific properties

 

Preset: Select a supported audio standard, or chose Custom to specify the number of output channels. The supported presets (and their output channels) are:

 

Custom:

Number of channels: Given a definable number of channels (n), It will provide n output channels named as ch1... chn

 

Mono: C

 

Stereo:  L, R

 

LCR: L, C, R

 

Quadrophonic: L, R, Lr, Rr

 

Dolby Surround: L, C, R, S

 

5.1 SMPTE:  L, R, C, LFE, Ls, Rs

 

5.1 DTS:  L, R, Ls, Rs, C, LFE

 

5.1 Film:  L, C, R, Ls, Rs, LFE

 

6.1 Dolby Surround EX: L, C, R, Ls, Cc, Rs, LFE

 

7.1 SMPTE: L, R, C, LFE, Ls, Rs, Lr, Rr

 

7.1 DTS:

 

 

Note: The outputs of these type of nodes are typically recombined using an Audio Router node downstream.  

Developer reference (API Rest - node/ExtractAudioChannels/property/[Property ID])

 

Property Label

Property ID

Preset

preset

Number of Channels

nChannels