TCL C755 / C805

Beats me. I guess it's something like SDR TVs playing back HDR content. It will play, but washed out.

I also confirmed jellyfin isn't reencoding the audio, so it's definitely the TVs behaviour.
 
My HT also behaves the same way; In fact, TrueHD, DTS-MA, AAC are all supported only via HDMI1/2 and not via ARC. So, I have a firestick plugged in HDMI1 port and my Plex happily pass-thru the Audio formats.
Though my TV says it supports Dolby Atmos, if I play the same movie on TV and audio via ARC to HT, TrueHD --> DD and DTS-MA --> PCM Stereo, AAC --> PCM Stereo. So, it is better to have Firestick / any streaming box connected directly to your HT receiver.
It might be possible that not all of the TV's hdmi ports have the same latest version of HDCP (basically digital copyright protection) resulting in this issue.
@Grease Monk
 
Available everywhere online flipkart ,amazon and croma

If anyone can give me TCL C755 in-depth review it will be very helpful with pros and cons
 
It might be possible that not all of the TV's hdmi ports have the same latest version of HDCP (basically digital copyright protection) resulting in this issue.
@Grease Monk
Can you describe your setup where you got TrueHD to process as TruHD on your AVR/soundbar?
Available everywhere online flipkart ,amazon and croma

If anyone can give me TCL C755 in-depth review it will be very helpful with pros and cons
An in depth review requires access to tools and multiple other points of reference. Not realistic for me. If you have specific questions, let me know and I'll try to answer them.
 
Can you describe your setup where you got TrueHD to process as TruHD on your AVR/soundbar?
I don't have an AVR, I simply use pc connected to TV via hdmi acting as a monitor. If some hdmi ports are able to passthrough audio stream without conversion but some don't then it usually means some hdmi ports don't have the required HDCP version to send audio stream untouched.
 
Can you describe your setup where you got TrueHD to process as TruHD on your AVR/soundbar?

An in depth review requires access to tools and multiple other points of reference. Not realistic for me. If you have specific questions, let me know and I'll try to answer them.
1)My first question can you watch either Dolby Atmos movies by connecting the hard drive, I have a Samsung Frame TV unable to play the Atmos soundtrack using a local tizen player

2) I have played many HDR movies or TV series either on Plex or om Apple TV (latest example presumed innocent ) it looks dim and washout in comparison with SDR playback
 
1)My first question can you watch either Dolby Atmos movies by connecting the hard drive, I have a Samsung Frame TV unable to play the Atmos soundtrack using a local tizen player
Playback by TV's own player requires TV to have the codecs & no TV has the hardware to decode a high bitrate bluray video stream with which atmos codec in legal/official media is used so it is pointless for any TV to have native atmos support. This is also why almost all smart TVs even today have 100mbps lan port because videos requiring more bitrate than that will not be able to be decoded smoothly by TV's own hardware.

2) I have played many HDR movies or TV series either on Plex or om Apple TV (latest example presumed innocent ) it looks dim and washout in comparison with SDR playback
If HDR videos are looking washed out then there is some settings conflict between source & TV resulting in TV not recognizing that media being played is HDR assuming TV has HDR capability.