--- title: "YouTube Audio Out of Sync? Fixes and Causes | sync.video" description: "YouTube audio out of sync while watching, or in a video you are about to upload? Fixes for browsers, apps and Bluetooth, and how to correct the file first." url: https://sync.video/youtube-audio-out-of-sync --- 1. [Home](https://sync.video/) 2. [Fix audio sync](https://sync.video/fix-audio-sync) 3. YouTube audio out of sync Free · runs in your browser # YouTube audio out of sync: watching and uploading If every video lags, the problem is your browser, app or headphones. If only your own upload does, fix the file before it goes up. When YouTube audio is out of sync, check whether it happens on every video or only one. If every video lags, the cause is on your side: the browser, an extension, graphics acceleration, the app or Bluetooth headphones. If only one video is out of sync, on every device, the uploaded file itself was out of step, and only the person who uploaded it can fix it by uploading a corrected file. This page covers both. For viewers, the steps below go from the quickest fix to the most thorough. For creators, YouTube’s own help says to make the audio and video tracks the same length and edit them before uploading; the tool above does that for the timing itself: open your video, press **Detect automatically** or line up a clap, nudge the sound **Earlier** or **Later**, and **Export video** with the picture untouched. Is it the file or the playback? If the video is out of sync on every device, the file is wrong and can be fixed once. If it is only wrong on one TV, speaker or app, the playback chain adds the delay and that device needs adjusting. ## How to fix YouTube sound that lags The first three steps are for watching; the last is for your own uploads. 1. ### Reload and test another video Reload the page or restart the app, then play a different video. If that one is fine, the first video is the problem, not your setup. 2. ### Check the browser In Chrome, turn **Use graphics acceleration when available** off (or on) under Settings → System and relaunch. Try a private window, which runs without most extensions, or Firefox’s Troubleshoot Mode. 3. ### Check the sound output Unplug or disconnect Bluetooth headphones and play through the device’s speakers. If the lag disappears, see [Bluetooth audio delay](https://sync.video/bluetooth-audio-delay). 4. ### Fix your own upload Open the file above, press **Detect automatically** (A), check a clear word with **Replay around here** (L), adjust with **Earlier** or **Later**, then **Export video** and upload the new file. ## If you’re watching ### One video or all of them? One video out of sync everywhere, on your phone and your computer alike, was uploaded that way. Nothing on your side will fix it; a comment to the creator might. Every video out of sync on one device means that device is the cause. ### Browser fixes * **Graphics acceleration**: in Chrome it is under Settings → System as **Use graphics acceleration when available** (older versions say hardware acceleration). Switching it off fixes stutter and sync on some computers; on others it makes them worse. Relaunch the browser after changing it. * **Extensions**: ad blockers and video enhancers can interfere with playback. A private window or Firefox’s Troubleshoot Mode turns most of them off for a quick test. * **Updates and restarts**: update the browser and restart the computer; long-running browsers with many tabs struggle to decode video smoothly. * **Playback speed**: if you changed the speed, set it back to normal and see whether the gap closes. ### Apps, TVs and headphones On a TV, every app including YouTube may be off because of the TV’s picture processing or a soundbar: see the [TV guide](https://sync.video/audio-out-of-sync-on-tv). With wireless headphones, YouTube usually compensates, but not on every device; measure with the [audio delay test](https://sync.video/audio-delay-test). ## If you’re uploading YouTube plays what you upload. If the file is out of sync on your own computer, it will be out of sync for every viewer, so fix it before it goes up. 1. Play the file in a browser or your phone’s gallery. If it is out of sync there, the file needs fixing. 2. Open it in the tool above. **Detect automatically** suggests an offset when there is a clap or a hit; otherwise line up a clear word by ear. 3. If the gap grows through the video, it is drift: use **Set point A** and **Set point B** under **Sound drifts over time** ([fix audio drift](https://sync.video/fix-audio-drift)). 4. Press **Export video**. The picture is copied, so YouTube receives exactly the quality you recorded. A CapCut export can be corrected the same way: see [CapCut sync](https://sync.video/sync-audio-capcut). YouTube’s help also says to make the sound and picture the same length. A file whose sound is much shorter or longer than its picture can be timed oddly after processing. ## Recording so it doesn’t happen again * Clap once on camera at the start of every take. It gives you and any tool an exact sync point. * If you stream or record with OBS, set each source’s **Sync Offset** once: see the [OBS guide](https://sync.video/obs-audio-delay). * Avoid recording through Bluetooth microphones when sync matters: they add a delay to your voice. * Screen recorders that use a variable frame rate can drift in some editors; export at a constant frame rate where the recorder allows. ## Questions about YouTube audio sync ### Why is YouTube audio out of sync on my computer? If every video is affected, the browser is struggling: try switching graphics acceleration, closing other tabs, a private window without extensions, and disconnecting Bluetooth headphones. If only one video is affected, it was uploaded out of sync. ### Why is my uploaded video out of sync on YouTube? Usually because the file was already out of sync, or its sound and picture had different lengths. Check the file before uploading, fix the timing here, and upload the corrected copy. ### Can I fix sync on a video that is already on YouTube? YouTube doesn’t let you replace the file of a published video. Fix your original, upload it as a new video and remove or unlist the old one. ### Does turning off hardware acceleration help? On some computers, yes; on others it makes playback worse. Change the setting, relaunch the browser and compare. ### Why is YouTube in sync on my phone but not on my TV? The video is fine; the TV or its sound system adds delay. Game mode, PCM output and the TV’s audio sync setting usually fix it. ## More in fix audio sync * [ Fix audio and video out of sync Work out whether the file or the playback is at fault, then fix the delay or measure it. ](https://sync.video/fix-audio-sync) * [ Fix Bluetooth headphone delay Reduce the lag of wireless earbuds and speakers, device by device, and measure it. ](https://sync.video/bluetooth-audio-delay) * [ Fix streaming audio out of sync One app, one show or every app? Find the cause and the fix for streaming lag. ](https://sync.video/streaming-audio-out-of-sync) * [ Set the OBS Sync Offset Measure webcam or capture-card lag from a clap and enter it as the Sync Offset. ](https://sync.video/obs-audio-delay) * [ Fix audio that slowly drifts Two sync points stretch the sound so it stays in step from start to end. ](https://sync.video/fix-audio-drift) * [ Sync audio and video online Drop one video to fix its delay, or several files to line them up by their sound. ](https://sync.video/)