Plex on LG OLED65CXPUA won't play DTS-HD MA 7.1 audio

Omg thank you so much! Wow. Really appreciate it.

Mind if i ask u about your oled? I have a 4k sony 900h and it’s nice but Sony might not deliver the updates (vrr) it promised. Is the oled all that it’s cracked up to be? Like the demo that plays on them in the stores? My collection on my nas is all 1080 mkv and dvd mkvs. Do you think this type of content would look much better on an oled? Thinking about the lg cx.

OLED is just awesome for blacks ( Inside scenes), not so for bright scenes like snow. If you want a very bright picture a LED,QLED or Micro LED.

I have LG65B8 and love it.

My prior TV was a 2013 Samsung LED 1080p F7100, one of their upper middle range TVs.

I always thought it had a good picture, which it does by 2013 standards. A family member has it now and is very happy with it.

The OLED makes it look like trash. Doesn’t matter what is playing - live TV (from an antenna), blu-ray rips via Plex, streaming media (Netflix, et al). I set them up side by side. It was not even close.

With an OLED, black is black, as in the light is turned off. Much darker than a closed LCD shade over an LED light. Also the colors are much richer since they’re generated by the OLEDs and not a LCD shade over an LED light.

All that said, I’m comparing my 3 year old OLED to a 7 year old LED TV.

I have not seriously looked at TVs since I bought my OLED.

From what I’ve read, the new higher end LED & mini-LED TVs have a very, very good picture. Their black levels have improved over the years as has their color fidelity. I don’t think they’re at OLED levels yet, but they might be “good enough.”

The other thing to consider is the room lighting. If the TV will be in a bright, sunny room, then you might be better off with an LED. Current OLEDs are not as bright as LED TVs. If the sun will shine on the screen through a window, the OLED could be hard to see. Obviously not a factor if in a windowless room or watching at night. However, if the room has windows consider what it will it look like when you’re watching live sports in the middle of the afternoon.

To sum up, I love my OLED and would buy it again in a heartbeat. However, it may not be the right TV for everyone. Not trying to be wishy-washy, but everybody’s circumstances are different.

Hope this helps.

Cheers.

1 Like

I invested in a Black curtain for sunlight during the day, money well spent. Indirect light or shaded light is of no concern.

The CX model Banker1 mentioned looks fantastic in store and it has a Gen 2 Alpha 9 processor which will be awesome for upscaling lower resolution Titles. I mostly play 1080P HEVC with great results.

Thank you guys, much appreciated. The oled would be watched at night. The thing i hate most is the poor viewing angle of my tv. U need to sit dead center. Also, anything other than 4k content and the tv does not really look that much different from my 1080p from 7 years ago. They look great in store because of their “torch mode” and the feed they give them, which i was wondering if it was the same for oleds. They all have that curated track in the showroom. But then u take them home and feed them a dvd or blu ray and they look just like all the other tvs. But this does not seem to be the case based on your comments. Thank you.

Got the LG CX 65". Also got Amazon to extend my return period for my Sony 900H for another month! So I have time to play around and decide what to keep.

BIG SHOCKER: LG doesn’t have HBO MAX. The fate of this tv might be bested by this one app. I got rid of all my Dune players and put simplicity above all else. One remote, everything tv-app based. So now I need to switch to my xbox and go into picture mode to turn off game mode and switch to the desired picture mode and fumble around with the xbox controller when I want to watch HBO MAX. I hate it.

I like that the Plex app on the LG has the circles around the actors so you can click on them to see what else they are in, in your collection. The Android TV OS does not do this.

I just need to see if losing HBO MAX and DTS is worth the extra $1k for the improved pq…

And I needed to disable both direct play and direct stream in order for my DTS audio MKVs to be transcoded to DD.

On the LG?

Just turn off dts in the Plex app settings. Leave direct play and direct stream enabled.

Turn off DTS on the Plex app on the TV? Couldn’t find this setting.

Personal Opinion: Buy the TV for its picture quality, not audio features, built in apps, etc, as something will always be missing.

I use a Nvidia Shield for Plex. That gives me TrueHD (including Atmos) and dts-HD audio, and it plays PGS subtitles w/o transcoding the video.

I use the LG apps for Netflix & Amazon. The Android TV apps work fine, but hitting that one button on the LG remote is just too easy.

CEC control makes it easy to power everything on/off with one touch and control the volume.

Want to watch Plex? Press a button on the Shield remote. The Shield, receiver, & TV all power on and switch to the correct HDMI input. Launch the Plex app and I’m in business.

Same with Netflix/Amazon. Press the button on the LG remote, everything powers up and switches to the correct input.

I’m down to two remotes, the LG & the Shield. Between Android TV and LG I can get any app I need.

One remote would be nice, but that won’t happen in the foreseeable future.

In the audio section of the Plex app settings (unless it changed with the latest update).

Edit 2: Make sure you using the early access version of the LG Plex app. In the app, select your userid/picture. In addition to change user, settings, etc., there should be a choice to enter/leave early access.

Edit:
Still there on my B7 OLED. Running v5.7.1 of the Plex app.

Thanks, I was looking in the movie menu settings. worked thanks

I hear you, but actually the Sony 900h with android had all the apps - one remote. Even DTS via ARC from the Plex app on the TV. One remote is king for me at this stage in my life.

The only thing I would consider is the shield and make that my one remote. Plus I get full dtshd and ddthd (right?) But now I’m in $200 more…

Yes. The Shield will passthrough Dolby TrueHD, including Atmos, and dts-HD/dts:X audio.

The 2019 version supports Dolby Vision as well as HDR10. You’ll have to check the reviews to see if Netflix, Amazon, et al support DV on the Shield. I’ve the 2015 Pro, which is HDR10 only, so cannot say for sure about DV support.

Yeah, $200 more. It’s a personal choice. No wrong decision. And something you can always add later if you want.

Decisions. One thing I know so far is that I’m watching the 1080p bd rip of gladiator and it looks insane. The blacks are indeed unreal. For a 21 year old movie…damn I’m impressed.

If i were to get the nvidia shield, how would I hook it up so it could pass ddthd/dtshd? Could I go from the shield to the tv and out arc to my receiver?

My receiver is old so i wouldn’t be able to go shield to receiver to tv (via hdmi).

You have two options:
Shield ← HDMI → TV ← HDMI-eARC → Receiver
or
Shield ← HDMI → Receiver ← HDMI → TV

To use HDMI-eARC, both the TV and the audio equipment must support eARC, otherwise the connection will fall back to HDMI-ARC.

HDMI-ARC cannot pass TrueHD or dts-HD audio due to bandwidth restrictions. It is limited to Dolby Digital, Dolby Digital Plus, dts, and PCM 2.0.

Thank you. And of course the tv cannot pass dts hd at all. Forgot about that.

Thanks, @FordGuy61!

So either

TV must be able to passthrough all current and future sound formats (not decoding eg. DTS means not being able to pass it through either, I think)?

or

Receiver must be able to support all current and future video formats, right?

The only other option is a gadget like Sharc or similar (I have no experience here at all, but there seem to be many cheaper ones)?

Isn’t there a gizmo, preferably cheaper than Shield, that will send video via one HDMI and sound via a second one (while maintaining lipsync)? If it would have granular control over formats supported and fallbacks for them (EDID-based sniffing isn’t always perfect), that would be a best solution.

More granular (or: any!) Plex options for HDMI passthrough wouldn’t hurt either!

/ useless random rant:

One thing I learned while (very recently) dipping my toes into all this, that it’s nowhere near plug-and-play ease. Analog audio was much easier. And I don’t even care at all about high res that I won’t be able to hear. Only about surround not turning stereo, stereo not turning into nothing and dialogues not being seconds before or after people moving their lips! Oh, and it would help if the movie would actually play and not constantly buffer, because I turned on subtitles :stuck_out_tongue_winking_eye: .

@Matt_K

I’ve done some more digging regarding use of eARC to passthrough TrueHD & dts audio.

According to a posting in AVSForum (linked below), the LG CX will not passthrough dts/dts-HD audio from an external device (Shield, etc) via HDMI-eARC to an attached soundbar/receiver/etc.

According to the CX user manual, it will pass TrueHD audio. Details linked below.

The lack of dts passthrough for external devices is disappointing. It means the only way play all audio types unmodified is to connect the Shield to the audio equipment. This is a non-starter for people with soundbars that lack HDMI inputs, receivers that support TrueHD/dts-HD but not 4K HDR/Dolby Vision passthrough, etc.

There is the HD Fury Arcana and probably similar devices. I’ve no idea if or how well they work. It provides two HDMI outputs, one for the display and one for the sound equipment.

The connection would be something like this:

Shield --> Fury --> TV
                --> Receiver/Soundbar

AVSForum 2020 LG OLED CX-GX Owner’s Thread + FAQ

  • DTS and DTS-HD support for USB and HDMI sources - the internal decoder is missing from the factory (as announced in the documentation) and probably it will never be added to the 2020 generation - what is puzzling is that DTS and DTS-HD is not even permitted to passthrough via ARC/eARC;

Q: I’m confused. So a DTS decoder is required to simply pass through a DTS signal? If the signal is just “passing through” and not being decoded, why is a decoder necessary? ;
A: If the TV accepts DTS audio it must at least decode that audio so that the internal speakers do some noise when DTS audio is playing - regardless of the actual source of audio is external or internal. Pass-Trough via ARC/eARC has the same requirements (the right EDID + a minimal DTS-to-stereo decoder) even if the final destination of audio is not the internal speakers.
The DTS license probably must include at least those two items:

  1. the acceptance of the said audio format (in the form of the EDID);
  2. a core decoder of the said audio format;

From LG CX User Manual (LG CX website, English/Spanish User Manual - zipped PDF )

truehd

3 Likes

Legend… save me a world of pain!!!