Dolby TrueHD Triggering Transcoding?

[nodiaque 64]

Hello,

I hae 2 LG TV. One is OLED65C8PUA which is an old 2014 model or so that only have HDMI ARC and the other one is OLED77C5PUA, 2025 model with HDMI E-ARC. Both are connected to 7.1+ Atmos Receiver (Sony STR-DN1080 and Denon AVR-X4800H).

I know the 77 can do Dolby Atmos 7.1 no problem but the second a TrueHD stream is sent, even 2.0, Emby transcode it. I'm wondering why because it shouldn't. In the user guide, it says it support Dolby TrueHD on EArc

http://kr.eguide.lgappstv.com/manual/w25/w25_u33/enga.html#6227

 

I know the 65 also support TrueHD but not on output at 7 channel. But TrueHD for 2 channel is supported.

 

Thank you

[yocker 1842]

49 minutes ago, nodiaque said:

Hello,

I hae 2 LG TV. One is OLED65C8PUA which is an old 2014 model or so that only have HDMI ARC and the other one is OLED77C5PUA, 2025 model with HDMI E-ARC. Both are connected to 7.1+ Atmos Receiver (Sony STR-DN1080 and Denon AVR-X4800H).

I know the 77 can do Dolby Atmos 7.1 no problem but the second a TrueHD stream is sent, even 2.0, Emby transcode it. I'm wondering why because it shouldn't. In the user guide, it says it support Dolby TrueHD on EArc

http://kr.eguide.lgappstv.com/manual/w25/w25_u33/enga.html#6227

 

I know the 65 also support TrueHD but not on output at 7 channel. But TrueHD for 2 channel is supported.

 

Thank you

TVs in general can't passthrough TrueHD and/or above 5.1 so transcode is needed.
If you want TrueHD and 7.1+ you will need to use for example a Nvidia Shield connected to the AVR.

[nodiaque 64]

but it's TrueHD 2.0!

[yocker 1842]

9 minutes ago, nodiaque said:

but it's TrueHD 2.0!

To my knowledge, Any TrueHD and 7.1+ in general can't be passed through on LG TVs. At least not by any native LG apps.

You will need an external device connected to your AVR for that to work.
Maybe it will work with connected to the TV and then through eARC, i'm not sure about that though.

Edited 53 minutes ago by yocker