Screen recording loses audio during a long take

Your screen recording starts with sound, but the audio disappears partway through a long take. Or the finished video is silent even though you could hear everything while recording. An ultrawide display can add extra work for the computer, but it does not normally switch audio off by itself.

Use the Screen Recorder to make a short comparison, then check whether the problem comes from the audio source, a permission, or a computer under load.

Test the recording

1. Open the Screen Recorder. Choose the same capture type you normally use: a screen, window, or browser tab.
2. When the browser asks what to share, choose the right screen or window. If the chooser offers an option to share audio, enable it. Audio sharing options depend on the browser and what you choose to capture.
3. Turn on the microphone or camera only if you need them. Start with a one-minute recording that includes speech and computer audio, such as a video or notification sound.
4. Play the saved recording and listen at the beginning, middle, and end. If that works, repeat with the same settings for a longer period, without changing the display or audio devices.

Keep a note of whether you captured a full screen, a window, or a tab, and whether you recorded microphone audio, computer audio, or both. Changing one choice at a time makes the cause easier to spot.

What the result means

The short and long recordings both have sound

The capture setup is working under the conditions you tested. If the original recording was silent, check whether it used a different screen, tab, audio source, or browser permission. A single successful test does not rule out a problem that happens only after the computer has been recording for a while.

The short recording works, but the long one loses sound

The audio source or computer state may change during a long take. A headset can disconnect, the default output can switch, or a busy computer can struggle to keep up. Try another long test with fewer open apps and a simpler capture target.

Microphone audio disappears, but computer audio continues

The microphone path is the likely problem. Check microphone permission, the selected input, and any headset mute switch. If you use a wireless headset, test with its microphone close to the computer or with a wired microphone to see whether the connection is involved.

Computer audio disappears, but your voice remains

The browser may not be capturing the sound from the chosen screen, tab, or window. Some browser capture options provide audio for a tab but not for an entire desktop. Repeat the test with a browser tab and enable audio in the browser's sharing chooser if that option appears.

The video and audio both stutter or stop

This points more toward performance, storage, or a recording interruption than an audio-only setting. Try a smaller capture target, close demanding apps, and avoid running several recordings or benchmarks at once.

How to fix it

1. Choose the right audio source. For a browser video or page, capture the tab and enable its audio in the browser's sharing chooser if available. For a full desktop or another app, check whether your browser offers audio for that capture type. If it does not, use a supported capture option instead of assuming the recording includes system sound.
2. Check microphone permission. If your voice is missing, allow microphone access for the TooLab page in your browser's site controls, then reload and try again. On Windows 11, open Settings › Privacy & security › Microphone and allow microphone access for apps. On macOS, open System Settings › Privacy & Security › Microphone and allow your browser.
3. Confirm the active audio devices. On Windows 11, check Settings › System › Sound and confirm the correct input and output are selected. On macOS, check System Settings › Sound › Input and System Settings › Sound › Output. If a Bluetooth headset or USB device disconnects or changes during the take, test with another device.
4. Reduce the capture workload. Capture just the app window or browser tab instead of the entire ultrawide desktop when that fits your task. Close games, video editors, extra browser tabs, and other demanding apps. If you can, lower the display resolution temporarily: in Windows 11, use Settings › System › Display; on macOS, use System Settings › Displays.
5. Prevent interruptions. Keep the computer awake during the recording and connect a laptop to power if practical. Disconnect and reconnect a headset or microphone before starting, rather than changing audio devices during the take.
6. Retest after a browser restart. Close other apps that may be using the microphone, restart the browser, and make another short recording. If the issue happens in one browser only, try the same capture in a different browser to separate a browser-specific problem from a device issue.

Why an ultrawide screen can matter

A 3440 by 1440 display has about 5 million pixels per frame. A 5120 by 1440 display has about 7.4 million. Capturing more pixels can increase the work of drawing and encoding each frame, especially when the screen is moving, the computer is already busy, or the recording runs for a long time.

That extra workload can cause dropped frames or a recording that becomes unstable, but it should not normally remove audio on its own. If the picture remains smooth while only one audio source disappears, focus on that source, its permission, and whether the browser can capture it. If both picture and sound become choppy, reduce the screen area or other workload first.

Screen Recorder runs in your browser, and recordings stay on your device. Nothing you record is uploaded.