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Accepted
Alexis Wilke
Asked: 2018-06-03 17:27:45 +0800 CST

Is there a way to play a one-sided stereo on both sides?

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It's fairly rare these days, but once in a while I bump into a video that has only one-sided sound (only the left channel or only the right channel.) Is there a way for me to change my audio setup so that one side gets played on both sides?

Note that I do not want to download the video, fix it, and play it then. I'd like to just tweak my settings for that one video so the left channel plays on both sides: left and right; or the right channel plays on both sides: left and right.

Changing the balance doesn't help since there is nothing on the other side, it's not a balance problem.

sound video

2 Answers

  1. Best Answer

    If you are talking about video in the browser such as on youtube then I would recommend a plugin. I use Audio EQ for Chrome and I absolutely love it. It allows me to adjust the gain, EQ and make it mono.

    • 5

  2. Alternatively, system-wide solution using pulse:

    1. Get sink list

      pactl list sinks | grep name:

    2. Use remap module to map channels

      pactl load-module module-remap-sink sink_name=mono \
 master=<sink_from_prev_cmd> channels=2 channel_map=mono,mono

    To stop it, Unload the module

    pactl unload-module module-remap-sink

    For permanent setup, add command from step 2 to /etc/pulse/default.pa

    Source: Can I downmix stereo audio to mono?

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