# Audio codecs and supported conversions
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Generally, Elemental Live can convert any audio codec that is supported as a source to any audio codec that is supported as an output. However, there are some constraints, as follows.
+ Constraint when Dolby Digital with Atmos is the source. Conversion to another codec isn't supported. You can only pass through this source codec.
+ Constraint when converting to another codec (other than Dolby Digital with Atmos) and changing the coding mode. The following rules apply:
  + The source must contain at least as many channels as the output. For example, to produce Dolby 5.1 (6 channels), the source must contain 6 channels. 
  + The source can contain fewer channels. For example, you can convert Dolby 5.1 to AAC 2.0. 

  In both cases, you might need to remix the channels in the output.