How to record sound from video to Android Xiaomi: proven methods

Xiaomi smartphone owners often face the need to extract audio tracks from a video or record internal sound while shooting the screen. The standard MIUI shell and its modern version of HyperOS provide a wide range of tools for multimedia, but audio recording functions can be hidden in non-obvious places on the menu. Understanding the logic of audio streams in Android is necessary to get a quality result without third-party programs.

There are several use cases: someone needs to save a voice message from the messenger, others need to record music from the video for status, and others need to create a screencast with pure system sound. In each case, the algorithm of actions will differ, since Android’s security policy limits direct access to the internal audio stream for regular applications without special permissions.

In this article, we will discuss the native system tools that do not require the installation of questionable software, and also consider proven utilities for deep work with sound. You will learn how to adjust the microphone and internal sound correctly to avoid echoes and interference during recording.

Using a built-in voice recorder to record sound

The easiest way to get an audio file is to run a video on one device and turn it on on another. However, if you have a phone, you can use a built-in voice recorder that can work in the background. The standard Xiaomi shell Dictaphone app has a feature of recording sound when the screen is off, which saves battery power.

First, play the video you want to extract the sound from. Then open the recorder app and press the record button. It's important to choose the right source of sound in the settings if this option is available in your firmware version. Usually, the system automatically switches to the microphone, picking up the sound through the speaker.

• 🎙️ Run the video in any player or browser.
• 📱 Open the app Tools → Dictaphone.
• ⚙️ In the quality settings, select the "No Compression" mode or «WAV» for better detail.
• ▶️ Press the recording button and immediately switch to the video.

The quality of the recording depends on the sensitivity of the microphone and the volume of the speaker. To get the cleanest track, it is recommended to increase the volume of video playback to 100% and close all windows that create extraneous noise.

⚠️ Note: When recording via microphone, the file may be exposed to extraneous noises from the room, notifications from other applications, or your voice.

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Use Bluetooth-connected headphones if you want to record a voice note over a video, but remember that the system sound may not be broadcast to the headphone microphone when you call.

Recording the screen with sound through the built-in function

The MIUI shell has a powerful built-in screencasting utility that allows you to capture the system’s internal sound, which is ideal if you need to save audio from a video hosting, streaming or game without losing quality, since the sound is written digitally, not through a microphone.

To activate this feature, call the swipe control panel down from the top right corner. Find the Screen Record icon. If it's not on the first screen, click three dots or the panel edit icon to add a widget. You need to adjust the audio settings before recording.

In the screen recording settings menu (cog icon), look for "Sound Source." There are three options available: microphone, system sounds, and both. To record sound from video, select System Sounds, in which case external noise will not enter the file.

Once set up, start recording and turn on the video. Once the process is complete, the file will be saved to the gallery. You can leave the video as is or convert it to an audio file later. The advantage of the method is that Android blocks recording of sound in some secure applications (DRM), but in most cases the method works flawlessly.

Converting Video to Audio through Online Services

If you don’t need a record of the process, you just need to get it. MP3-The file from the existing video in the gallery, the most convenient way to use online converters. This method does not require installing applications and works on any Xiaomi model, whether it is a budget Redmi or flagship Xiaomi.

There are many sites that offer Video to MP3, and they work the same way: you download a file, the server processes it, and it links to audio downloads, and it's fast and doesn't take up space in the phone's memory, unlike installing heavy video editors.

The conversion process is as follows:

1. Open the browser (Chrome, Mi Browser) and go to the converter site.

2. Press the file download button and select the video from the gallery.

3. Select the output format (usually MP3 or M4A) and quality.

4. Click "Convert" and wait until the process is over.

• 🌐 No need to install additional software.
• 💾 Saves internal memory of the device.
• ⚡ Quick processing of small files.
• 🔒 It is important to check the site for viruses before downloading.

⚠️ Note: When using free online converters, your data may be temporarily stored on third-party servers.

For large files, this method can be inconvenient because of the limits on the size of the file to be downloaded. In such cases, it is better to use offline applications or PC versions of converters, and you should also consider traffic consumption if you are not connected to Wi-Fi.

Third-party applications for audio extraction

When built-in tools are scarce, Google Play apps come to the rescue, allowing you to not only record sound, but also edit it: crop, superimpose effects, change bitrate. Popular programs like Video to MP3 Converter or MP3 Video Converter can do the job in seconds.

And when you install this app, you get access to advanced settings, you can choose the specific segment of video you want to convert, or you can extract the audio track from multiple files in a batch, which is especially useful for content creators who need to quickly prepare the audio track.

When choosing an app, pay attention to the permissions it requests. It requires storage (files) to work, but a request for access to contacts or geolocation should alert you. Good applications work offline using the resources of your phone's processor.

Example of request for authorization:




- android.permission.READ_EXTERNAL_STORAGE (Reading files)




- android.permission.WRITE_EXTERNAL_STORAGE (File recording)




- android.permission.RECORD_AUDIO (Audio recording optional)

Some advanced snails allow you to change codecs and sampling rates, for example, you can convert audio to 48 kHz AAC for better quality or to OGG for space saving, and the standard choice is MP3 with a bitrate of 320 kbps.

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Third-party applications give maximum control over the format and quality of the final audio file, but require installation and may contain advertising.

Recording sound through a computer (ADB and emulation)

For advanced users who want to record high-quality system sound without loss, there is a method of connecting to a PC. Using USB debugging and ADB (Android Debug Bridge) tools, you can stream the screen and sound to a computer where the recording is done by professional software.

This is more complicated than using a phone, but it's guaranteed to be clean. You'll need a USB cable, a computer and a driver installed for Xiaomi. You'll also need to activate the developer mode in the phone's settings.

Procedure:

1. Enable Developer Mode by tapping the build number 7 times in the About Phone menu.

2. Activate "Debugging by" USB» sub-settings.

3. Connect your phone to your PC and select File Transfer Mode.

4. Use the ADB command to capture the screen and sound.

There is a scrcpy utility that allows you to display your phone screen to your computer with minimal latency and transmit sound (on Android 11 and above), which is the best way to record gameplay or sound from a copy-protected application, since at the OS level, recording is not blocked if the output goes to an external device.

• 💻 A computer or laptop is required.
• 🔌 Physical connection by cable is required.
• 🛠 Basic command line skills required.
• 🎧 Provides the best sound quality without compression.

⚠️ Note: When connecting to an unknown computer USB Always check the pop-up on your phone. Don't confirm debugging unless you trust the device you're connecting to.

Frequent problems and their solution

While recording, Xiaomi users may encounter a number of common problems, most often related to Android privacy settings or app-specific features, and understanding the reasons helps to quickly troubleshoot issues.

One of the common problems is that the recorded video is not sounded when selecting System Sounds, which occurs when a source application (such as WhatsApp or Telegram in some versions) prevents other programs from capturing the audio stream, in which case only recording through a microphone or using a second device helps.

Another nuance is that the recording is interrupted by an incoming call, so if a call is made while recording a screen or voice recorder, the recording may stop or interrupt, and it is recommended that you turn on Do Not Disturb mode before starting an important recording to prevent interruptions.

Sometimes users complain of a quiet sound when recording through the microphone, in which case it is worth checking if the microphone is covered with a case, and cleaning it from dust. Also, some Xiaomi models have a microphone gain setting in the engineering menu, but you should change it with caution.