Audio missing from some Bluray ISOs

I have recently found a couple of movies were there is no audio track. The video works perfectly but under audio there are no tracks available. The movie I most recently found was the 2018 2K restoration of the 1948 Joan of Arc Movie. The ISO plays OK on a PC with powerdvd, the Blu ray itself plays OK on multiple Blu Ray players. Has anyone else found this any issue and managed to resolve it?

Welcome to the forum!

You may want to run that video through mediainfo and post the results here.

Also, what version of Infuse and are you using the free version or Pro?

Infuse Pro 6.5.4

General
Complete name : Z:\New BluRay\Joan of Arc\JOAN OF ARC.iso
Format : AVC
Format/Info : Advanced Video Codec
File size : 40.3 GiB
Overall bit rate mode : Variable
FileExtension_Invalid : avc h264 264

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Bit rate mode : Variable
Maximum bit rate : 32.3 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Maximum Content Light Level : 12447 cd/m2
Maximum Frame-Average Light Level : 323 cd/m2

This is the info from the movie file itself
General
ID : 0 (0x0)
Complete name : E:\BDMV\STREAM\00004.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 38.1 GiB
Duration : 2 h 25 min
Overall bit rate mode : Variable
Overall bit rate : 37.4 Mb/s
Maximum Overall bit rate : 48.0 Mb/s

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
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
Codec ID : 27
Duration : 2 h 25 min
Bit rate mode : Variable
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : DTS XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Muxing mode : Stream extension
Codec ID : 134
Duration : 2 h 25 min
Bit rate mode : Variable
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 16 bits
Compression mode : Lossless