Description of the issue

numOutChannels is (value), it is not recommended that the usacElementType sequence contains (value) channels


General compliance
Best practice


ISO IEC 23003-3 (USAC):
numOutChannels: Not forbidden but it may leads to playback issues with some players due to uncommon value for this usacElementType sequence

Possible solution/action

ISO IEC 23003-3:
Fix the encoder to fill numOutChannels with the correct count of channels computed from the usacElementType sequence, then reencode the content.



QC.EBU.IO Test Items

Audio Coding Syntax