Audio Channel Issue - Mono Audio
"Mono Audio" refers to the duplication of an audio track, causing stereophonic or intended surround elements to be absent.
Mono audio impacts both the Technical and Content Quality of an asset. Customer experience is negatively affected by panning effects or by object-oriented audio not being present in their stereo mix. Rarely creative intent, but possible. Intended mix elements and panning should be preserved. Further assets derived from this mix will exhibit Mono Audio.
Operator has flagged the individual tracks of the 5.1 mix as mono in the metadata of the file.
2.0 tracks contain exactly the same information, no panning effects preserved from the 5.1.
How to Prevent:
Label tracks correctly in the metadata.
Instead of duplicating tracks, be sure to fold-down 5.1.
Replace mix with a fold-down of the 5.1, preserving the orientation of panning effects.