Easily Add Center Channel Audio?

Hello my fellow Plexians!

I’m sorry if this isn’t the right place for this question, but I can’t seem to find anywhere better to ask it.

Brief background:
I primarily access my Plex Media Server content via an AppleTV (Which ever the newer 4K model is, though I only use 1080) connected to my flatscreen. I love the way that the AppleTV remote is able to turn the TV on and off and control the volume of the TV itself. It’s reduced our number of remotes down to one, and I don’t want to give that up.

The Problem:
Whenever I watch content that has 3.1, 5.1, or 7.1 audio, I can’t hear any dialog through my TV’s stereo speakers because it’s all on the center channel.

The Question:
Is there an inexpensive (<$100) way to add a center channel to my TV? I don’t really have the room or access to sufficient power to add a receiver/amplifier and 3-5 new speakers. As an apartment-dweller, I’m largely content with the audio of the TV’s left and right channels, I just really want to add a center channel without having to add an extra remote. Most of the soundbars with a center speaker are $750+ and require the addition of another remote. I’ve started re-encoding some of the worst offending files with a stereo mixdown track, but it’s SO time consuming!

Any advice would be gladly welcomed! I’m also an engineering student, so I’m not above hacking together my own circuit boards and speakers if necessary.

Surprised your TV or the AppleTV does not perform the mixdown. The major network OTA broadcasts, at least in US, are AC3 5.1, so the TV has to mixdown to 2.0 when using internal speakers.

Anyway, regarding the re-encoding, take a look at XMedia Recode.

It can copy, not re-transcode, the existing video, saving a lot of CPU cycles & time. You can choose to copy/transcode the audio as desired.

Alternately, if you’re using Handbrake, which does not have a video passthrough option, set the video to transcode as fast as possible (i.e. ultrafast, constant quality = 50), and then choose desired audio transcodes/quality. The video will be unwatchable, but you’re not going to use it.

Remux the original + Handbrake file, to get the desired output, i.e. original video, Handbrake audio, etc.

MKVToolNix is a good tool for remuxing MKV files. Use aforementioned XMedia Recode for MP4/M4V files.

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