The VideoLAN Forums

VLC could not decode the format "trhd" (TrueHD Audio)
VLC for IOS 2.8.4 (284.1) All Along the Watchtower Based on: 3.0.0-git vetinari
iPad Pro running IOS 11.1 (15B066f)

Additionally I have a double split screen with copies on each side...

VLC-iOS is not capable of playing True HD for legal reasons and is not going to be any time soon.

For the double split screen, I don't understand. Can you do a screenshot for illustration?