The right OBS sample rate depends on what you mean by a “pre-recorded stream”. If you play a video through OBS into a live YouTube broadcast, follow YouTube Live’s recommendation for the channel audio format; if you upload a finished video file, use YouTube’s upload guidance instead.
In OBS, the control is under Settings → Audio → Sampling Rate. Set it for the workflow you are using, apply the change, and test the complete path from source to playback before relying on it overnight.
First identify the video workflow
People use “pre-recorded stream” for two different processes. In the first, a video file is played as a source in OBS, and OBS encodes and sends a live broadcast to YouTube. Viewers see a live stream, even though the pictures and perhaps the audio were recorded earlier. In the second, you upload a finished video file to YouTube and let YouTube process it as a regular video. That is not a live encoder stream.
The distinction matters because YouTube publishes different audio guidance for these cases. For a live encoder stream, the sample rate depends on whether the outgoing audio is stereo or 5.1 surround. For a finished upload, YouTube’s upload guidance specifies 48 kHz. These are not competing universal rules: each applies to a different delivery path.
Before opening OBS, answer this question: will OBS send a live broadcast while the video plays, or will you upload the completed file directly? If you plan to use OBS to transmit it live, also establish whether the programme is stereo or 5.1. If you are not deliberately producing a 5.1 mix, do not assume that a file with several audio tracks is automatically 5.1 surround; check the actual programme and output configuration.
This article is about the sample-rate choice and the test that should follow it. It does not replace the other decisions involved in preparing an always-on channel, such as the loop itself, stream continuity, or rights to use recorded music. For a live loop workflow, the practical steps in setting up a looping video with XSplit provide a separate example of prerecorded material being delivered as a live broadcast. The exact application differs, but the live-versus-upload distinction remains the same.
Find Sampling Rate in OBS Settings → Audio
Open OBS Studio and select Settings. Choose Audio, then look in the general audio options for Sampling Rate. Select the value that matches your workflow and outgoing channel format, then use Apply or OK to save the change. OBS’s overview guide identifies Sampling Rate as an Audio setting and recommends testing before your first live stream.
The control changes the rate OBS uses for its audio processing and output. It is not a selector for the YouTube destination, and it does not turn stereo into surround sound. If you change this setting while using an established scene collection, take a moment to verify that the intended audio sources are still active and that your usual output devices are selected.
OBS versions and localisations can present labels or layout slightly differently. If the screen on your computer does not match these directions, start with the Audio section of Settings and check documentation for the OBS version you have installed. Do not guess based on a menu guide for another release. The relevant control is the general sampling-rate setting, not an unrelated source property or a video frame-rate control.
It can help to note the original setting before changing it. That gives you a straightforward way back if a test behaves differently than expected. You do not need to buy a microphone, interface, adapter, or other hardware just to make this software configuration change; the official guidance discussed here calls for choosing the appropriate rate and testing the setup.
Sample rate for stereo live streaming
For a live encoder stream with stereo audio, YouTube’s live encoder guidance specifies 44.1 kHz. This is the relevant recommendation when OBS is sending a stereo live programme, even if the programme’s video came from a file recorded earlier. YouTube lists the live audio sample-rate choices alongside its broader encoder settings on the live encoder settings page.
A common practical case is a devotional channel that plays a stereo bhajan recording from a media source in OBS, adds a simple visual loop, and sends the result to YouTube Live. That is still the live encoder workflow. For the audio sample rate, use the stereo live guidance rather than the upload recommendation merely because the recording existed before the broadcast began.
Keep sample rate separate from bitrate. YouTube’s live guidance also gives audio bitrate recommendations, but those are a different setting: sample rate is measured in kilohertz, while bitrate is measured in kilobits per second. This article is concerned with the former. Avoid changing unrelated encoder controls in the hope that they will make the sample-rate choice more correct.
The recommendation is not a promise that every source, device, or operating system will behave identically at a given setting. A file, playback application, and capture path may have their own settings, and the OBS control does not by itself prove what a viewer receives. Choose the relevant value, then check the real output. If something sounds wrong, investigate the entire path rather than assuming that one sample-rate change explains the fault.
If you are building a continuous audio programme, the test should include the same sort of material that will run in the actual channel. A short clip with silence, a spoken introduction, and music may expose a different issue from a test tone alone. If your channel is a 24/7 Shiv bhajan stream, test a representative part of the devotional audio at the level and arrangement you intend to broadcast.
Sample rate for 5.1 live streaming
For a live encoder stream with 5.1 surround audio, YouTube’s guidance specifies 48 kHz. That differs from its stereo live recommendation, so do not apply the stereo rate to 5.1 simply because it is the value you have used before. The recommendation is specific to the outgoing 5.1 live format.
First confirm that you are genuinely preparing a 5.1 programme. A stereo source played through several speakers is not necessarily a 5.1 mix, and setting OBS to 48 kHz does not create surround channels. Confirm the channel layout at the source and in the rest of the audio setup. If your programme is stereo, use the stereo live guidance; if it is 5.1, use the 5.1 live guidance.
YouTube’s live encoder page also notes that 5.1 audio over RTMP or RTMPS is supported only with AAC. That is a codec and transport detail, not a reason to infer a different sample rate. If you are configuring surround output, check the current official encoder guidance for all the relevant format settings rather than relying on a remembered rule or treating this article’s sample-rate figures as a full encoder configuration.
A local preview may not reproduce the audience’s listening setup. Test that the intended channels are present and that the programme plays as expected through the actual broadcast path. If you cannot verify a 5.1 output end to end, it is better to resolve the format uncertainty before scheduling a long event than to assume that selecting 48 kHz has settled it.
Sample rate for uploading a finished video
If your plan is to upload a completed video file to YouTube, use the upload guidance, which specifies 48 kHz audio. This is the appropriate recommendation for a finished video upload, whether the video is a short recording or a long programme. YouTube’s recommended upload encoding settings cover this upload path.
This is separate from an OBS live broadcast. If you use OBS only to make a local recording and later upload the finished file, the upload recommendation is the relevant one. If you use OBS to play a recording as a source and transmit it live at the same time, the live guidance applies instead. The presence of a prerecorded source does not decide the workflow; the way the content reaches YouTube does.
If you change OBS’s Sampling Rate before making a local recording, remember that it is a setting in OBS’s audio path, not a guarantee that the completed upload will meet every encoding recommendation. Check the rendered file and its audio before uploading. YouTube’s guidance identifies a recommended rate; it does not establish that changing OBS alone will repair every source-file issue or that it will determine all aspects of YouTube processing.
For a channel that alternates between live loops and uploaded versions of the same programme, treat these as two delivery jobs. Keep a short note with the intended OBS setting for each job and confirm which workflow is active before you start. That avoids carrying over a live-stream assumption to a file upload, or the other way around.
Apply the setting and test the audio path
Once you have identified the workflow, set the value in Settings → Audio → Sampling Rate, apply it, and test before the real broadcast or upload. OBS recommends testing your setup before the first live stream, and YouTube likewise says to test before starting a live stream. The test matters because a correct selection on one screen does not confirm that the source, scene, monitoring, encode, and received playback all behave as intended.
For a live stream, use a short private or otherwise suitable test that exercises the same route as the planned programme. Include representative video and audio, rather than testing an empty scene. Check the OBS audio meters while the source plays, listen through the monitoring path you normally use, and review the received stream’s playback. YouTube advises using representative audio and video and monitoring stream health during an event. Keep the test proportionate, but do not skip the audience-side check.
For a finished upload, make a brief local recording or inspect a representative exported file before sending the full programme. Listen to it on the type of playback device your audience may use, and confirm that both the intended audio and video are present. A successful local recording is useful evidence about the OBS path, but the final uploaded result should still be checked after YouTube processes it.
If audio is missing, unexpectedly quiet, distorted, or out of sync, treat those as things to investigate, not symptoms that automatically prove a sample-rate mismatch. Confirm that the intended source is active, the correct scene is being used, and the selected output is the one you meant to test. Then review the source and application settings and repeat the test after one change at a time. The official recommendations establish the target rates; they do not claim that one rate fixes every problem across every device or operating system.
For a continuous channel, the test should include a loop boundary or a source transition if your programme uses one. Listen before and after the point where the video restarts, and confirm that audio does not disappear when the media source changes state. A stream-health checklist for FFmpeg playlist restarts concerns a different streaming method, but it is a useful reminder that continuity should be checked at transitions as well as during steady playback.
A note of the test result is useful when a stream runs unattended: write down the workflow, stereo or 5.1 format where relevant, chosen rate, and what you checked. If you later update OBS, swap an audio source, or change the programme format, repeat the relevant test. A rate that worked for one setup is not proof that a changed path works the same way.
When the broadcast depends on a computer remaining on all night, the sample-rate choice is only one part of the operating burden. StreamNeo removes the need to keep that computer running by taking an uploaded video and carrying it as a YouTube live stream, which can be useful when your specific problem is the overnight computer and not fine control of an OBS production.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
Is a prerecorded video played in OBS considered a live stream?
Yes, if OBS is encoding and sending it to YouTube through a live broadcast. Use the live encoder recommendation for the outgoing format, not the upload recommendation simply because the video was recorded earlier.
Which OBS sample rate should I use for stereo live audio?
YouTube’s live encoder guidance specifies 44.1 kHz for stereo audio. Set it in OBS under Settings → Audio → Sampling Rate, then test the full path with representative programme audio before going live.
Why is 48 kHz recommended for an upload but not for stereo live audio?
The figures apply to different workflows. YouTube’s upload guidance specifies 48 kHz for a finished video, while its live encoder guidance specifies 44.1 kHz for stereo and 48 kHz for 5.1 surround.
Will changing Sampling Rate fix a problem with my stream audio?
Not necessarily. The setting is one part of the audio path, and official guidance does not say that changing it fixes every device or source problem. Check the source, OBS meters, test playback, and received stream before deciding what to adjust.