FYI, My copies of Star Wars Episode 1 - 6 all have that same audio format and they all direct play. The video is 8-bit H.264, not 10-bit. Blu-ray rip using MakeMKV.
Shield Pro (2015) ← HDMI → Denon AVR-X4300H ← HDMI → LG B7 OLED
Plex app v9.19.0.85. Prior versions worked OK also.
Plex App audio: Passthrough = HDMI
Shield Audio: Auto
Settings → Device Preferences → Display & Sound → Advanced Sound Settings → Available Formats → Auto: Use the formats your audio device reports supporting
To see audio formats the Shield picks up from the attached device, go to Settings → Device Preferences → About → HDMI.
Phantom Menace MediaInfo
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Format settings, GOP : M=1, N=12
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 16 min
Bit rate mode : Variable
Bit rate : 30.2 Mb/s
Maximum bit rate : 35.6 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.608
Stream size : 28.7 GiB (86%)
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : DTS ES XXCH XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Codec ID : A_DTS
Duration : 2 h 16 min
Bit rate mode : Variable
Bit rate : 4 815 kb/s
Channel(s) : 7 channels
Channel layout : C L R Ls Rs LFE Cb
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 24 bits
Compression mode : Lossless
Stream size : 4.58 GiB (14%)
Title : dts-HD MA 6.1
Language : English
Default : Yes
Forced : No
Text #1
ID : 3
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 2 h 16 min
Bit rate : 45.2 kb/s
Frame rate : 0.352 FPS
Count of elements : 2878
Stream size : 44.0 MiB (0%)
Language : English
Default : Yes
Forced : No
Text #2
ID : 4
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 2 h 16 min
Bit rate : 369 b/s
Frame rate : 0.007 FPS
Count of elements : 60
Stream size : 368 KiB (0%)
Title : Foreign Language - Forced
Language : English
Default : No
Forced : Yes
