I lose surround sound when playing transcoded media

[theolaa]

I tried it out on a billion different codecs and containers: EAC3, AAC, DTS, AC3, mkv, mp4, etc.. It only seems to matter if it's transcoding or not (even bitrate-limiting transcoding reduces to stereo, not just subtitle burning). It really does seem like it's either the transcoded format from Jellyfin, or the passthrough of the HLS from my TV, which really sucks. Any other workarounds or solutions anyone can think of other than getting different subtitles (probably SRT) and playing direct-playable media?