Here is a copy of what I found reference Plex server and DTS HD.
While Plex supports various audio formats, including DTS, most clients do not directly support lossless formats like DTS-HD MA. This means the server may need to transcode the audio, which can lead to issues.
Here's a more detailed explanation:
Plex's Support for DTS:
Plex supports DTS audio formats, including DTS-HD, but not in a lossless way.
Lossless vs. Lossy Audio:
DTS-HD MA is a lossless audio format, meaning it preserves all the audio data, while formats like Dolby Digital (AC3) are lossy.
Client Compatibility:
Most Plex clients don't natively support lossless audio formats like DTS-HD MA, so the server needs to convert the audio to a compatible format for playback.
Transcoding Issues:
Transcoding can lead to issues like audio lag or reduced audio quality, depending on the server's processing power.
Solutions:
To address this, you can either:
Use a client that supports lossless audio: Some clients, like the NVIDIA Shield, are better at handling lossless audio formats.
Ensure your soundbar/receiver can decode lossless formats: Make sure your audio equipment is capable of decoding DTS-HD MA.
Use a client that can pass through the audio: Some clients can pass the audio stream directly to your receiver, bypassing the need for transcoding.
Examples of Plex clients with good support:
NVIDIA Shield
Xbox
Plex desktop apps
2nd gen Apple TV 4K (with HomePod/HomePod Mini)
