Server Version#: 4.12.3
Player Version#: 7.26.0.14578
Hello, tonight I tried to watch RO:ASWS on my Sony KD-49XE9005 Android TV, using plex because movie sizes were becoming too big for my usb drive, problem is that the audio did not work if the soundbar were connected to the tv through HDMI-ARC. I tried using optical but the delay between the audio and the video was unbearable so I watched the movie without soundbar, which is a shame.
I tried searching in the player and tv settings and I did not find anything that was relatable to the problem. The model of the soundbar is Sony HT-S350, it worked fine watching movies from the usb drive.
The movie is in 4K, H264, the audio codec is DCA (DTS, afaik), the strings from the movie xml info says this <Stream id="139" streamType="1" default="1" codec="h264" index="0" bitrate="34252" bitDepth="8" chromaLocation="left" chromaSubsampling="4:2:0" codedHeight="1600" codedWidth="3840" colorPrimaries="bt709" colorRange="tv" colorSpace="bt709" colorTrc="bt709" frameRate="23.976" hasScalingMatrix="0" height="1600" level="51" profile="main" refFrames="2" scanType="progressive" width="3840" displayTitle="4K (H.264)"/>
<Stream id="141" streamType="2" selected="1" default="1" codec="dca" index="2" channels="6" bitrate="1152" language="Italiano" languageCode="ita" audioChannelLayout="5.1(side)" bitDepth="24" profile="dts" samplingRate="48000" displayTitle="Italiano (DTS 5.1)"/>
As you can see, the audio track is in 5.1, yet, the player could not reproduce it using the soundbar. I cannot figure out the problem on my own, any help would be much appreciated 
I’ll probably reply tomorrow, g’night
