Seems to have been discussed here as well: [BUG] Transcoded videos over LAN using Android & Android TV client fails
Experiencing a similar problem on my OnePlus 7 Pro (Plex Android v7.27.0.15018 (57fc93ee)), the player settings reports that the phone supports: dts, ac3 & eac3. But not Dobly TrueHD.
I’ve tried everything from clearing the apps cache, to re-installing it and restarting the Plex server. Nothing resolves this problem.
In the past if I started a 4K HDR movie with Dolby TrueHD the movie would play perfectly fine on my phone. I think the server was just transcoding the TrueHD to AC3. I could alternatively select the movie’s built in compatibility (AC3) audio track and it would also play but the server would not transcode the audio.
However, now if I try playing any video with TrueHD audio i get this error, the server won’t try and transcode the TrueHD stream automatically.
Too add to this my entire anime collection is either in AAC Stereo or FLAC Stereo/5.1. Not a single video will play now on my phone.
I’ve checked the servers settings. Transcoding is set to automatic as it has been for years and both server and client are up-to-date.
In the case of anime, it’s not the audio causing the transcoding, but the subtitles. If I select no subtitles the video plays perfectly on my phone.
So seems there is a rather major issue with the latest server’s ability to transcode audio.
God I wish they would test their updates before release, but I suppose when you release an update every 5 minutes this is not possible.
Seems I can only play content that requires no transcoding. Server version 1.18.4.2171
I’ve tried server version 1.18.2.2058 and I have the same problem. So maybe this is a problem with the mobile app.
Tested on an iPhone 11 pro, and this problem does not occur with any content which needs to be transcoded. I don’t have another Android device to test unfortunately.
Tested using my phones LTE connection, setting the Plex to not limit cellular playback quality. This bizarrely fixes the problem. Plex still reports that the video is transcoded as required for my anime subtitles (AAS). “The selected subtitles require transcoding to maintain their appearance.”
Tested on another on another WIFI with remote streaming quality set to max, and again it works flawlessly. The server automatically transcodes the TrueHD audio to EAC3.
