Tried this MKVToolnix - didn’t work for me. Removed all audio and subtitles except for bare necessary ones. Subtitles ON still force transcode regardless of subtitle setting.
Subtitle ON forces transcode to Video → 20Mbps - regardless of whether or not audio is transcoded.
Client - Plex for LG
Version - 5.93.2
Platform 10.2.1
Display - LG C4 (2024)
webOS25 / 10.2.1-5202 Software Version 33.22.52
The issue around subtitles started from version webOS 24 / 9.2.4-43 that updated August 2025.
Other issues with webOS 25 / 10.2.1-5202 update and Plex for LG
- Frequent crashing
- Remote streaming limited to 40Mbps
- Subtitles force transcode (regardless of setting)
I fail to understand how the TV software update to webOS 25 has helped my user experience?
Prior to webOS24 / 9.2.4-43
- Played everything, except TrueHD would not get passed through eARC.
- Can’t comment on other audio formats DTS:X, Auro-3D, 9.1, or 11.1 channel audio
LG C4 will only pass through TrueHD over HDMI connected devices via eARC.
Internal webOS applications don’t allow this for some reason.
Contacted LG support to ask for that feature to be implemented as it isn’t in the profile.
Is TrueHD licensed separately? The back of the TV doesn’t specifically call out TrueHD - but does state Dolby, Dolby Vision, Dolby Vision IQ, Dolby Audio, Dolby Atmos.
I don’t know why a license is required to pass through an unprocessed bitstream audio signal over eARC?
Vero-V running OSMC is very appealing.
Would be nice just to have everything just work.
I want the highest bitrate audio and video to get the most out of the equipment I purchased.
I want TrueHD, DTSMA-HD, 4K, DV, HDR10.
