If YouTube audio is out of sync, reload the video or restart the app, then test the same video using your device’s speakers. Try another video too. These checks help you tell whether the problem comes from one upload, your playback device, or an external speaker. On a TV, also test with 5.1 audio turned off if that option is available.
Quick fixes: start with your device
| Where it happens | Try first | Next step |
|---|---|---|
| Chrome or another browser | Reload the video and test a second browser. | Check extensions, updates, and cached files. |
| iPhone or Android | Close and reopen YouTube. Test the phone’s speakers. | Update the app and restart the phone. |
| Smart TV or streaming box | Restart playback and compare the TV speakers with your soundbar. | Test with 5.1 audio off, where supported. |
| YouTube TV subscription app | Test another channel or program. | Try Settings > 5.1 audio > Off. |
| Your own live broadcast | Make a local clap-test recording. | Correct the audio or video delay in your encoder. |
If one video has the same delay across devices, the problem may be in that video or its broadcast. A viewer cannot fix timing already present in the source. If other videos play correctly, avoid changing your whole setup to compensate for just one upload.
Fixing audio sync when watching YouTube
Change one thing at a time and replay the same section. A close-up of someone speaking is useful for comparing the sound with their lip movements.
Chrome and other desktop browsers
- Reload the page, then try another video.
- Open the same video in another browser. If it works there, focus on the original browser.
- Test in a private window with extensions disabled. Some extensions can be allowed in private mode, so check that they are off.
- Update the browser. If the problem persists, clear its cached files and test again.
- If playback also stalls, lower the video quality and check your connection.
These are troubleshooting tests, not guaranteed sync fixes. YouTube’s playback troubleshooting guide recommends checking extensions, updates, cache, and connection quality.
iPhone and Android
Close YouTube, reopen it, and replay the video. If that fails, update the app and restart your phone. Compare the app with the same video in a browser.
On Android, you can also try clearing YouTube’s cache in your phone’s app settings. Menu names vary by phone. iPhone does not have the same Android-style Clear Cache control, so do not spend time looking for it in YouTube’s settings.
Bluetooth headphones or speakers
Switch to the device’s built-in speakers or wired headphones. If the timing improves, focus on the Bluetooth audio path. Reconnect the headphones and test again. Avoid applying a permanent audio delay to the whole device before checking whether the problem happens with other videos and apps.
Smart TVs, Roku, Fire TV, and Apple TV
Restart the YouTube app or streaming device. Compare the TV’s own speakers with your soundbar or receiver. If only the external audio is delayed, check that device’s lip-sync or audio-delay controls using its manual.
In the regular YouTube app, open the video’s player controls and turn off 5.1 surround sound as a test. YouTube says this control appears only for supported videos and devices. You may not see it on every video.
If the test makes no difference, restore your preferred audio setting. You can also test stereo or PCM output in the TV or receiver settings if the device supports it. Those menus belong to the device, so their names vary.
YouTube TV audio out of sync
The YouTube TV subscription service has a different menu from the regular YouTube app. In the YouTube TV app on your TV, select your account avatar > Settings > 5.1 audio and switch it off. This is Google’s documented test for problems with a 5.1 setup.
Check another channel or program. If the delay affects only one broadcast across devices, report that program’s playback issue rather than adjusting every device to match it.
Fixing audio sync in your own YouTube live stream
First, make a short local recording with the same camera and microphone you use for the stream. Clap in front of the camera, speak a sentence, and watch the recording. Listen through wired headphones or built-in speakers so Bluetooth monitoring does not confuse the test.
If the recording is already out of sync, correct the source timing first. If it looks right, test an unlisted YouTube stream on another device and check stream health in Live Control Room.
Adjust audio timing in OBS
If you hear the clap before the hands meet, the audio is early. A positive audio Sync Offset delays it to match the video. If the sound is already late, adding more audio delay makes the problem worse.
- In the Audio Mixer, open the affected source’s menu and choose Advanced Audio Properties.
- Find the source’s Sync Offset field.
- For early audio, add a small positive delay, then record another clap test. For example, a sound that leads the picture by 100 milliseconds needs roughly 100 milliseconds of audio delay.
- Adjust and repeat until speech and claps line up. There is no universal offset that works for every setup.
If the sound comes after the hands meet, the audio is late. Check for an existing audio offset first. You may need to delay the video instead. OBS provides a Render Delay filter for aligning a video source with microphone audio.
Separate lip sync from stream latency
Stream latency is how long an event takes to reach viewers. Lip sync is the timing between the sound and picture. A stream can be several seconds behind real life and still have correct lip sync.
YouTube’s latency guide says lower latency can increase buffering. Test Normal latency if buffering is the problem and instant interaction is not essential. Choose it in Live Control Room under Stream Settings before your next test. It does not replace correcting a bad audio offset.
If the delay grows during the stream
A fixed offset helps a fixed delay. A gap that keeps growing needs more testing. Compare a longer local recording with an unlisted stream. Check for encoder overload, device timing problems, and driver or firmware updates from the equipment maker.
Reduce the encoding load if your software reports overload. Check the upload connection if it reports network-related dropped frames. Those are different problems, even when both interrupt the stream.
What if an uploaded video is out of sync?
Check the original file before uploading it again. YouTube recommends making sure the audio and video tracks have matching durations. Correct their timing in your video editor, export a new file, and check the full result before uploading.
For prerecorded and 24/7 streams
Upstream’s cloud streaming can run your uploaded content without leaving your local encoder on. It does not automatically repair an out-of-sync source file, and it cannot fix a viewer’s Bluetooth or TV audio delay.
If your Upstream broadcast has a problem, use our YouTube audio-sync help guide and compare the source file with the live output. Fix the file first if the mismatch is already there.
Before your next broadcast, test the same sources and settings you plan to use. Check the beginning and end of a longer rehearsal if the delay tends to grow over time.
Turn recordings into live streams.
Upload videos, schedule them as live events, or keep a channel running up to 24/7 without staying on camera or leaving a computer online.
