NVIDIA Shield questions: getting Atmos in Netflix and Prime Video

Both Shield answers in the manual are about Atmos, and both fixes sit in an app or source setting rather than in the EDID.

I get Atmos from every app except Netflix on the Shield 2019.

Open your Netflix account settings on a computer, check the audio playback setting, make sure it is set to high rather than anything lower, then restart the source.

The Prime Video app on the Shield 2019 is not giving me Atmos.

Try turning off Dolby Audio processing on the Shield.

If the problem is not app-specific, the audio capability side is covered in the HDMI audio EDID guide, and the flags themselves are on the MAIN page.

Based on: the DR HDMI 8K user manual, Rev 1.2. This page is a readable web edition; for exact values and option names, the original PDF manual remains the reference.