Google Play Movies & YouTube - No Dolby Digital 5.1

[jikhead]

Is anyone else having this same problem and let me know so I can determine where the problem is and who to contact to fix it:  I can't get any Dolby Digital 5.1 audio output from either YouTube or the Google Play Movies apps.  They will only output DD 2.0.

It is not a problem with the movies themselves, as I have double-checked all my movie contents from my Nexus Play to validate.  It also doesn't appear to be the the TV or WebOS 3.0, as all my other TV apps are not experiencing this problem, and I get Dolby Digital 5.1 output just fine.  I have updated the firmware on my TV, uninstalled & reinstalled the apps to check, and still no good.  I've chatted with Google support but got a Tier 1 support person who didn't have a clue or help.  This person suggested I contact my speaker manufacturer which was a ridiculous response.  Below are my versions...

LG OLED65B6P

WebOS 3.0     04.30.65

YouTube      1.0.27

Google Play Movies    1.0.20

[jikhead]

Good news, as I have at least now having DD 5.1 working from the YouTube app now.  It still won't work in the Play Movies app.

I've had the TV short of a month now.  Since then, I have it two times were I wasn't getting any video signal from my HMDI3/UHD bluray player.  I had to reset the TV each time.  Last night I went to try and watch some Netflix and discovered I wasn't getting any audio out the ARC HMDI to my receiver; none of the apps.  I reset the TV again, tinkered with settings, did it all again this morning to no avail.  After working on it this morning, I went to go download the manual to double-check all the TV settings and noticed a new firmware was just released yesterday.  After installing the new firmware, I was able to get my audio out the ARC HDMI again.  Since I hadn't logged back into my apps after the last reset, I went to check Play Movies and YouTube and found that Dolby Digital 5.1 was now working out of the YouTube app.

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[makro]

I've just bought OLED65C7V.

YouTube works with dolby digital, but Google play movie outputs only in stereo 2ch even if I set PCM or Auto from WebOS audio menu, no way to have dolby digital.

Any ideas?