HighEfficiency-AAC is an extension to LowComplexity-AAC to increase quality in low bandwidth environments. Mythtv currently does not support HE-AAC in DVB transmissions due to missing upstream support. (see #5487 and others)
HE-AAC is also known as aacPlus and AAC+SBR.
HE-AAC and DVB
DVB has HE-AAC multiplexed in LATM. (instead of ADIF or ADTS) Countries broadcasting HE-AAC audio in LATM.
- DVB-T in Norway
- DVB-T in New Zealand
- DVB-T in Portugal
aacPlus v2 aka. AAC+SBR+PS is the extension off HE-AAC with ParametricStereo to support even lower bandwidths. As the name suggests this variant only supports 2 channels.