When you find that video is recorded without audio, it is one of the most common problems for users of the MiUI and HyperOS ecosystem. This can be critical for gamers, streamers or those who create educational materials, since silent video loses much of its informative value.
In modern versions of the shells from the Chinese manufacturer, content protection algorithms work very aggressively, blocking audio capture in applications where it is forbidden by copyright holders. However, most often the problem is solved by the correct configuration of the built-in voice recorder or choosing the right third-party software. In this article, we will analyze all possible scenarios, from simple switches in the menu to complex system constraints.
It's worth noting that the lack of sound can be related to the physical state of the device, for example, if the USB port is occupied by the headset, or if a particular application does not have permission to access the microphone, and understanding the source of the problem is half the solution. Let's look at the main causes and methods of fixing them.
Settings of the built-in voice recorder and sound sources
The first thing to check is the settings of the recording tool itself. In Xiaomi shells, the screencaster functionality is integrated deep into the system, but has its limitations. When the recording function is activated (usually through a notification curtain or a combination of buttons), a floating menu appears where you can select the audio source. If there is "No sound" or "Mic Only", then the system sounds will not play.
It is important to distinguish between the two main modes of operation: capture system sound and capture through the microphone. System sound allows you to record what you hear in headphones or speakers (music, game sounds), while microphone mode will record only your voice and external noises. On some models, especially with stripped-down versions of the software, the option of recording internal sound may be hidden or unavailable due to regional restrictions.
⚠️ Note: If you try to record a video from Netflix, Disney+ or other streaming services, the sound may disappear automatically due to protection HDCP. This is not a malfunction of the phone, but a protection against piracy, which cannot be circumvented by standard means.
To access advanced settings, go to Settings → Advanced Settings → Screen Recording. You can force the sound quality to select your preferred source. Make sure the Record Sound slider is activated and the Sound Source selects System Sound or Microphone and System Sound if available on your Android version.
Problems with permissions and access to the microphone
Starting with Android 10 and up, Google has significantly tightened its privacy policies, and now apps can’t just record internal audio without special permission or APIs. If you use third-party screencasting software, make sure they’re given all the necessary rights.
You can check this in the application management menu. Find your recording app (such as XRecorder or AZ Screen Recorder) in the list and go to the "Permissions" section. There must be access to the Microphone activated. Without this right, the program will not physically be able to capture the audio track, even if its internal settings are ticked.
☑️ Permit verification
Also worth noting are special features. Some recorders require access to Accessibility Service to emulate taps or record audio. If the recording stopped working after the system update, these settings may have gone wrong. Go to Settings → Advanced Settings → Special Features and check the status of your application.
Conflicts with Bluetooth devices and headsets
A common reason for the lack of audio in the recording is the active connection of a Bluetooth headset or speakers. The system can redirect the audio stream to an external device, and the recording program, trying to capture the sound, gets "silence" because it does not have the rights to intercept the Bluetooth audio channel, this is especially true for wireless headphones with aptX or LDAC codecs.
If you need to record audio from a Bluetooth device, try temporarily turning it off and switching to the smartphone speaker. In some cases, reconnecting the headset after the recording process starts helps, although this is not a guaranteed method. MIUI algorithms sometimes block the recording of sound from external sources for security reasons.
| Type of connection | Probability of sound recording | Recommended action |
|---|---|---|
| Wired headphones (3.5 mm) | Tall. | Use the "Microphone" mode |
| Bluetooth headset | Low. | Turn off before recording |
| Phone speakers | Maximum | The best option |
| USB-C headphones | Medium | Check compatibility |
Why is Bluetooth blocking the recording?
Restrictions in Games and Secure Applications
Many users complain that sound is on the phone's menu but is lost in specific games or applications, which involves using secure audio streams. Game developers can ban audio recording to prevent cheating or copyright protection of music, in which case no phone settings will help.
However, if other games have sound written and one game doesn't, the problem may be the settings of the game itself. Check the audio output in the graphics or sound settings inside the game menu. Sometimes switching from Volume Sound to Stereo or changing the sampling rate solves the problem of compatibility with the recorder.
Also worth mentioning is Do Not Disturb or Game Mode. Game Turbo has features that can block background processes, including recording audio to keep performance down. Try temporarily disabling game acceleration or adding a recording app to exceptions.
⚠️ Warning: Banking apps and encrypted messengers (the secret chat mode in Telegram) block not only the recording of the screen, but also the capture of sound.
Use of third-party applications for recording
If Xiaomi’s standard functionality doesn’t meet your needs, you can turn to third-party solutions, XRecorder, AZ Screen Recorder and ScreenCam are considered market leaders. They often have more flexible audio encoder settings and allow you to choose bitrate, sampling frequency and channels.
When installing a third-party application, it is important to immediately grant it all the rights requested. Unlike a system recorder, third-party programs can require permissions for overlays (displaying over other windows), without which you will not be able to control the recording while playing.
In the settings of these apps, look for "Audio Source." Select Internal Audio for Android 10+ or Microphone for older versions. Some apps offer "Internal + Microphone" mode, which is ideal for streaming with comments.
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Use XRecorder if the standard one doesn't work. It has a special audio capture engine that bypasses some of the software limitations of MIUI.
System failures and resetting of audio settings
Sometimes the problem is not the settings, but the temporary failure of the audio drivers, and if the sound is suddenly gone and no longer recorded in all applications, it will help to restart the device, which is a banal but effective way to clear the cache of audio services.
If the reboot didn't work, you can try resetting your application settings. Go to Settings → Apps → All apps → Mi Services and Updates (or similar system app). Click "Clear Data" and "Clear Cache." This will return the system components of the recording to factory settings without deleting personal files.
In extreme cases, if the problem appeared after updating the firmware, it can be a bug of a specific version of MIUI. In such cases, it remains to wait for a patch from the developers or use third-party software that does not depend on the system record libraries.
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Rebooting the phone eliminates 80% of the sound problems caused by temporary audio driver crashes or suspended recording services.
Technical limitations of the Android version
Remember, audio recording capabilities are directly dependent on the operating system version. On Android 9 and below, system audio recording was impossible without root rights. Since Android 10, Google has implemented a formal API to capture internal audio, but manufacturers can modify it.
On devices with Android 11/12/13/14 from Xiaomi, there may be bugs when the recording channel remains busy after a call or using a voice recorder, in which case the Media Server process stops completely through the developer menu or just wait for 5-10 minutes.