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Stateful

ANSWERED No audio on LG OLED CX for DTS

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Stateful

Greetings!

I'm having trouble with no audio if the movie playing has any kind of DTS audio codec and this seems to be a specific issue to the new LG OLED CX TV, more specifically this one: https://www.lg.com/uk/tvs/lg-oled48cx6lb

I tried playback on an older LG TV and it had no issues with the same playback.

I've tried messing around with the audio settings on the TV itself but it yielded no result. I've also updated to the latest available firmware for the TV.

Help with this would be very much appreciated! Thank you for reading through!

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SamES

Yes, we need to disable DirectPlay of DTS for 2020 models in the next release as it's no longer supported by LG.

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Stateful

Oh okay, that explains it then. Thank you so much for taking the time to answer!

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yarez0
11 hours ago, SamES said:

Yes, we need to disable DirectPlay of DTS for 2020 models in the next release as it's no longer supported by LG.

confirm that CX models no longer support DTS decoding at all.

all 2020 models don't have DTS license (BX, CX, WX etc..), only DOLBY. if you want DTS sounds you need to use external sound system that support it through ARC or eARC, maybe by changing HDMI parameter to PCM instead of BITSTREAM

https://www.avsforum.com/forum/40-oled-technology-flat-panels-general/3119288-2020-lg-oled-cx-gx-owner-s-thread-faq-posts-1-6-no-price-talk.html

"The DTS-HD internal decoder was removed"

 

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SamES
Posted (edited)
44 minutes ago, yarez0 said:

if you want DTS sounds you need to use external sound system that support it through ARC or eARC, maybe by changing HDMI parameter to PCM instead of BITSTREAM

I don't even think output via ARC/eARC is supported (as is the case with Samsung).

From your avsforum link:

Quote
  • DTS/DTS-HD audio is not passed via eARC - LG was notified about this issue, hopefully, they will provide a fix via a future firmware update - We have further indirect info from LG: It's not a bug, they are not supporting it, just like Samsung - so it's not going to be fixed!;
  • 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;

 

Edited by SamES

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yarez0
2 hours ago, SamES said:

I don't even think output via ARC/eARC is supported (as is the case with Samsung).

From your avsforum link:

 

My bad 🤦 

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SamES
8 hours ago, yarez0 said:

My bad 🤦 

No problem, I just want to be sure that you interpret it the same way, as disabling DTS in the app will disable it from ARC/eARC as well as via the TV speakers.

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yarez0
Posted (edited)

did not read the whole article, I got a 65C9 because of the small diferrence between the C9 and CX and the DTS support. Has I read some topics, the only way for you to have DTS support is to use external device as Apple TV, sticks (NVIDIA etc).

seams that all new devices (TV, soundbars like SONOS ARC) drops out DTS to DOLBY only 😪, saddly if you have DTS you will have to convert all the files 😭

Edited by yarez0

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rbjtech

How DTS have fallen 😪 .. I guess the might of streaming with everything being Dolby Digital Plus (incl Atmos) has largely rendered DTS & DTS-HD 'unnecessary' for the vast majority of normal users.

As a consequence - Not having to pay for the DTS license (or more than likely, Dolby paying the manufacturer to not have DTS support 🤪..) is now becoming more common, which on a multi-thousand pound top end TV's is just plain crazy.

Anybody still using Blu-Ray (non 4K) disks is going to get a shock though as DTS-HD was the 'de-facto' standard, and even if the track is available, to me DD/AC3 was always a lower quality audio experience than DTS. 

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