How to record a screen on Android with sound on Xiaomi Redmi Note 9

Modern smartphones have become universal multimedia tools that allow you not only to consume content, but also actively create it. Owners of the popular Xiaomi Redmi Note 9 model often face the need to capture what is happening on the display: whether it is passing a difficult level in the game, creating a training video or saving a rare bug in the system. Fortunately, the Android operating system in the shell of MIUI provides built-in tools that do not require the installation of third-party software.

However, despite the availability of the feature, users often have difficulty adjusting the audio. Standard settings often offer recording only through the microphone by default, which leads to a deterioration in the quality of the final video due to extraneous noise. In this article, we will discuss in detail how to activate the capture of the internal sound of the system, avoid common errors and obtain professional quality of video recording.

Basic activation of the function through the notification curtain

The fastest and most reliable way to start recording is to use the standard system tool that is already integrated into the Redmi Note 9. All you need to do is unlock the device and swipe from the top edge of the screen down to open the control center. In the icon grid, you need to find an item called Screen Recorder or Screen Recorder. If the icon is missing in the visible area, you should pull the list down or press the edit button (usually three dots or a pencil icon) to drag the desired widget to the active panel.

When you click on the icon, the device doesn't start recording instantly, but instead offers you to choose the source of the audio signal. This is a critical point, because it depends on the choice whether the game or video in the final file will be heard. The system will offer three options: turn off the sound, use the microphone or capture system sounds. To get clean audio without echoes and street noise, you need to select the option System Sounds.

Once the selection is confirmed, the countdown will begin, and the image capture process will start. A floating control panel will appear on the screen, allowing you to pause recording, take a screenshot or draw over the image at any time.

⚠️ Note: When activating system audio recording, all notifications and incoming calls may be temporarily silenced or not played to avoid spoiling the recording by extraneous interruptions.

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For quality recording, always choose the System Sounds sound source to avoid recording ambient noise through a microphone.

Configuring quality parameters and resolution

Before you start creating content, it is recommended to check the technical parameters of the video stream. The Redmi Note 9 factory settings can be set to medium quality to save space, which is not always suitable for detailed reviews. To change these parameters, you need to run the Screen Record application through the menu of all programs or long-click on the icon in the curtain, and then go to the settings section indicated by the gear.

Here, the user can choose the resolution of the video. For this model, the options 1080p, 720p and 480p are relevant. Choosing the maximum resolution 1080x2340 will provide the best detail, but will significantly increase the size of the final file. Frame rate is also adjustable: the standard 30 fps are suitable for most tasks, but for dynamic games it is better to install 60 fps if the smartphone processor can cope with this load without losing performance.

The bitrate settings deserve special attention. High bitrate improves picture quality, making the image more clear in dynamic scenes, but requires more CPU resources and free memory. If you plan to mount video on a computer, it makes sense to set maximum values. For fast sending videos to messengers, medium-sized parameters are enough that will take up less storage space.

Solving problems with lack of sound in the recording

Often users are faced with a situation where the video is recorded successfully, but the audio track remains empty or quiet. One common reason is the Do Not Disturb mode or active silent mode. In some versions of MIUI, system sounds are forcibly turned off when recording if the media volume is set to zero. Before starting the process, make sure that the volume slider is raised to a comfortable level.

Another reason could be an application conflict: If a music player or navigator with voice prompts is running in the background, the system can block audio capture from the target application. Close all unnecessary processes through the running task menu. It's also worth checking the permissions for the recorder application itself: go to Settings → Apps → Screen Record → Permissions and make sure that access to the microphone (if needed) and storage is allowed.

In rare cases, the problem lies in software failure of the shell itself. Rebooting the device often helps to reset temporary audio drivers errors. If the problem persists in only one particular application (for example, in the banking sector or streaming service), then it can be content copy protection (DRM), which software prohibits the recording of images and sound.

⚠️ Note: Some secure apps (Netflix, banking clients) may show a black screen instead of an image when trying to record due to Android security policies.

Use of third-party applications for advanced functions

While Xiaomi’s built-in tool is quite functional, advanced users may need more flexible settings, such as writing a front-in-picture camera or overlaying a webcam. There are specialized applications from the Google Play store, such as AZ Screen Recorder or Mobizen, for this purpose.

When using third-party software, it is important to carefully monitor the permissions requested. To work properly, the program will need access to display over other windows and capture the audio stream. Installation of such applications may require special rights through the Accessibility menu, which allows the program to intercept the image from the screen in real time.

However, third-party recorders often contain ads or watermarks in free versions, and they can consume more battery life than a native solution from the manufacturer. The use of external tools is justified only when the standard functionality of the Redmi Note 9 does not cover specific user needs, such as streaming directly to the cloud or complex editing on the fly.

• 📱 AZ Screen Recorder: a popular solution with support for Full HD and the absence of time limits.
• 🎥 Mobizen: Offers handy tools for editing and overlaying watermarks.
• 🔊 ADV Screen Recorder: allows you to customize bitrate and select audio sources more flexibly.

Optimizing performance during recording

Screen recording, especially in high resolution and with sound, is a resource-intensive task for the Snapdragon 730G processor installed in the Redmi Note 9.During active recording, the device can heat up, and in games, a decrease in frames per second (FPS) is possible.To minimize the impact on performance, it is recommended to close the background applications that are not in use at the moment.

Also, you should disable the interface animations and live wallpaper if installed, which will reduce the load on the GPU and allow you to allocate more resources to encode the video stream. In Game Turbo mode, which activates automatically when you start games, you can adjust the performance profile, choosing a balance between graphics quality and stability of work.

Keep an eye on the battery level. Active recording of the screen consumes energy quickly. If you plan to create a long video lesson or go through a long game session, it is better to connect the smartphone to the charger, but this can increase the heating of the case. In such cases, remove the protective case for better heat sink.

Where to find and how to edit finished videos

Once the recording process is complete, the file is automatically saved to the device gallery, and can be found by opening the Gallery app and going to Screen Recorder, which stores all the videos created, sorted by date of creation, and files are.mp4 format, which ensures maximum compatibility with any video player and social networks.

The built-in MIUI gallery editor allows you to do basic processing: cropping the beginning and end, overlaying filters or music. For more serious editing, adding transitions, text comments and complex work with the audio track, it is advisable to use specialized applications such as CapCut or KineMaster. They allow you to work with multiple layers of video and audio.

If a file is too large to send via instant messengers, you can compress it right in the gallery or use online services. When sending it via Telegram or WhatsApp, remember that instant messengers compress video strongly, which can degrade the quality. It is better to send files as "Document" to maintain the original resolution.

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Keep the original recordings on a cloud drive or computer, as it may not be possible to re-write a unique moment.