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YouTube Live Audio Bitrate Too Low: OBS Settings to Fix It

For stereo YouTube Live, set OBS streaming audio to 128 Kbps and 44.1 kHz. Check the active streaming track, codec and upload capacity if the warning persists.
Length3 min Posted Quest giverVGSources Team
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For a standard stereo YouTube Live stream, set OBS’s streaming audio bitrate to 128 Kbps. In OBS, open Settings → Output and change the streaming output—not just the recording output. Use AAC or MP3 for RTMP/RTMPS and a 44.1 kHz sample rate for stereo. YouTube’s 384 Kbps and 48 kHz recommendations apply to 5.1 surround sound, not ordinary stereo.

Set the right OBS audio bitrate for YouTube Live

YouTube recommends 128 Kbps for stereo live audio. The bitrate is the amount of encoded audio data sent each second; it is separate from sample rate, which is measured in kHz. YouTube’s current encoder guidance does not state a publication year, so these figures should be treated as current guidance rather than assigned an inferred year. See YouTube’s encoder settings guidance.

  1. In OBS, open Settings → Output.
  2. Check the output mode. In Simple mode, locate the streaming audio bitrate control. In Advanced mode, find the audio settings for the active streaming output and track.
  3. Set streaming audio to 128 Kbps for stereo.
  4. Confirm the audio sample rate is 44.1 kHz for stereo. Sample rate and bitrate are different settings.
  5. Apply the change and verify that it affects the stream, not only recordings.

OBS’s Advanced output mode provides separate control over stream and recording settings; labels and menu details can vary by OBS version and selected output mode. Refer to the OBS output settings overview if your interface differs.

Match the settings to your channel layout

Audio layout YouTube-recommended live audio bitrate Sample rate
Stereo 128 Kbps 44.1 kHz
5.1 surround 384 Kbps 48 kHz

Choose the 5.1 values only if the stream is actually configured to send 5.1 surround audio. Raising a stereo stream to 384 Kbps does not make it 5.1, and a sample-rate change does not correct a bitrate setting.

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Check codec and whether audio is reaching the stream

For RTMP/RTMPS, YouTube lists AAC and MP3 as supported audio codecs. If OBS shows 128 Kbps but YouTube still reports a low or zero current bitrate, check the audio path as well as the number in Output:

  • Confirm the intended microphone, game audio, or other source is active in OBS.
  • Check the OBS audio mixer meters while audio is playing; a configured bitrate cannot transmit sound from an inactive or silent source.
  • In Advanced Output mode, verify the source is routed to the audio track used by the stream. A recording track setting alone does not establish that the streaming track is configured the same way.
  • Check YouTube’s stream health and messages after starting a test stream.

These are diagnostic checks, not a single confirmed explanation for every zero-bitrate warning. YouTube’s documentation gives the recommended audio bitrate and supports monitoring stream health, but does not identify one universal OBS cause for a zero-current-bitrate report.

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Distinguish audio bitrate from upload bandwidth

The audio bitrate is one component of the stream’s total data rate. YouTube says the total stream bitrate cannot exceed available upload bandwidth and recommends leaving 20% headroom. That network limit is different from the audio bitrate control: if the connection cannot sustain the whole stream, reduce the video bitrate or resolution as needed while keeping the appropriate audio setting. See YouTube’s streaming tips.

Test before the event and monitor stream health

Run a test with audio and video movement similar to what you plan to stream, then review YouTube’s stream health and messages. YouTube specifically advises that tests include audio and movement representative of the planned stream. A brief test can reveal a silent source or a mismatch that a bitrate field alone will not show.

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Frequently Asked Questions

Does 128 Kbps mean 128 KB/s?

No. Kbps means kilobits per second; KB/s means kilobytes per second.

Will increasing the audio bitrate fix choppy video?

Not necessarily. Choppy video can be a total-stream bandwidth or video-encoding issue; check YouTube’s stream health and available upload capacity.

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