Xiaomi Yi action cameras have long established themselves as universal devices for shooting outdoor activities, but their capabilities go far beyond sports videos. With the right setup and additional equipment, these compact cameras can successfully replace the car DVR – especially if you need quality video in Full. HD/4K, wide viewing angle and reliable operation in extreme conditions.
Unlike the classic recorders, Xiaomi Yi Action Camera (including Yi models) 4K+, Yi Lite and Yi 3 offer more flexible exposure settings, better color reproduction and the ability to use replaceable batteries. GPS, The need for manual cycling and specific mounting, and in this guide, we will explore how to turn your action camera into a full-fledged DVR, from model selection to installation and operation.
It's worth noting that this approach is not for everyone: if you want a recorder that automatically turns on when you start the engine or integrates with parking sensors, you should consider specialized devices, but for those who already own Xiaomi Yi or want to save without losing quality, our guide will be a useful tool.
Which Xiaomi Yi model to choose for use as a DVR?
Not all Xiaomi Yi action cameras are equally well suited for the role of recorder, the key criteria for choosing: video resolution, viewing angle, autonomy and availability of stabilization.
- 📹 Xiaomi Yi 4K+ — The best choice for maximum quality. 4K@30fps or 1080p@120fps, electronic stabilization EIS, angle 155°. Minus - high price and heating during a long recording.
- 📹 Xiaomi Yi 3 — The best balance of price and opportunity. HD 1080p@60fps, angle 155°, memory card support 64 GB. Suitable for most tasks.
- 📹 Xiaomi Yi Lite – budget version with resolution 1080p@30fps angled 145°. Suitable for temporary use, but the quality in the twilight leaves much to be desired.
- 📹 Xiaomi Yi 4K (The first version is an outdated model, but still relevant thanks to the support 4K. The main disadvantage is the lack of stabilization.
For permanent use in the car, we recommend Yi. 4K+ Or Yi 3. One will give you better detail, the other will give you more stable performance in hot weather. Note the firmware version: older builds may not have a cyclic record that you have to manually enable through the Yi Action Camera App.
⚠️ Note: Xiaomi Yi models do not have a built-in capacitor for emergency file saving when power is turned off. If you are critical of the black box function (save the last seconds before an accident), you will need an external uninterruptible power source (UPS) or specialized registrar.
Additional equipment required
To turn the Xiaomi Yi Action Camera into a full-fledged DVR, you'll need accessories, without which the camera will either not work properly in the car or quickly fail.
| Accessory | Appointment | Recommendations for selection |
|---|---|---|
| Car mounting | Locking of the camera on the windshield | Choose a mount with 3M-It's adhesive and adjustable angle, and it's a universal for action cameras, like Yi Car Mount). |
| Car charger | Continuous cell power | We need an adapter with an exit. 5V/2A and USB-Type-C cable (for new models) or Micro-USB cable (for older models). |
| Memory map | Storage of video files | Minimum Class 10 or UHS-I, It's 32 GB. 4K — 64GB and higher (SanDisk Extreme recommended). |
| Filter CPL | Reducing glare from glass | Polarization filter with a diameter of 28 mm (for Yi) 4K+) or 22 mm (for Yi 3). |
Further consideration may be given to:
- 🔋 External battery (if you plan to record when the engine is off).
- 📶 Wi-Fi Repeater for remote camera control via smartphone (useful for setting up without removing the camera).
- 🛠️ Refrigeration case – if the camera overheats in the sun (relevant to Yi) 4K+).
Setup of camera for recording in the car
By default, Xiaomi Yi is not optimized to work as a registrar. To achieve stable cyclic recording and correct file retention, you need to change several parameters, you can do this through the official Yi Action Camera App (available for Android and iOS) or manually through configuration files.
Main settings:
- Cyclical Recording: Enable Loop Recording mode with a 3 minute or 5 minute segment length to avoid overflowing memory card.
- Permission and FPS: For the daytime shoot, choose 1080p@60fps (optimal balance of quality and size of files — 1080p@30fps high-exposure.
- Exposition: Install EV +0.7 or EV +1.0 for better shadow drawing in the cabin.
- Stabilization: Include EIS (if there is, but note that it cuts the edges of the frame on ~10%.
- Auto-Switch off: Turn off the Auto Power Off and set Always On.
For advanced users, if the standard settings don't work, you can edit the script.fex file on the memory card, for example, to turn off the shutter sound or change the bitrate. Changing the configuration file can lead to unstable camera operation - back up the original file!
Insert cycling (3-5 minute)|Turn off auto-power|Permits to be established 1080p@60fps|Increase exposure to +0.7 EV|Check stabilization (EIS)|Formatting a memory card in FAT32-->
Fixing and installation in the car
The right placement of the camera is the key to quality recording and security.
- 📍 Place of installation: Optimally, behind the rear-view mirror, closer to the top of the windshield. Avoid areas closed by wipers or sun visor.
- 🔄 Inclination angle: The camera must "look" above the horizon, capturing 2-3 meter of road in front of the hood and part of the sky (for fixing traffic lights).
- 🚫 Avoid: Do not attach the camera to the torpedo – vibrations will worsen the quality of the video. Also avoid places where the lens gets direct sunlight (risk of overheating).
Use bilateral scotch for fastening 3M (It comes with most car holders. Before installation, degrease the surface of the glass with alcohol. If you plan to shoot the camera often, choose a fast-removal mount (for example, Yi Suction Cup Mount).
⚠️ Note: When using Xiaomi Yi 4K+ hot-weather (>30°C) avoid direct sun exposure to the body. Overheating can cause automatic shutdown or battery damage. In such cases, use a sun visor or a case with ventilation.
To power, connect the camera to the lighter through USB-Interference filter adapter. Cheap chargers can interfere with the car's audio system. If the camera accidentally shuts down when the engine starts, check the on-board voltage, you may need a voltage stabilizer.
Nutrition and autonomy: how to avoid discharge
One of the main drawbacks of using Xiaomi Yi as a recorder is the rapid discharge of the built-in battery. 1.5-2 It's a few hours before it goes off:
- Continuous power from the lighter: the most reliable option. Use high-quality USB-exit-adapter 5V/2A short-core (1 (m) to minimize voltage losses.
- External battery: Power bank with a capacity of 10,000 mAh with Quick Charge support is suitable. Note that some models turn off at low current consumption - look for batteries with Low Current Mode function.
- Replacement of the built-in battery: in models Yi 3 and Yi 4K+ You can install a high-capacity battery (for example, 1200 mAh instead of the standard 1050 mAh.
If the camera turns off when the engine starts (due to a voltage drawdown), try:
- 🔌 Connect the camera through USB-hub with a capacitor (e.g. Ugreen) USB Hub).
- 🔋 Use a voltage stabilizer 12V→5V (for example, MP1584).
- ⚡ Turn off Auto Power Off camera settings and install Always On.
💡
If the camera is overheating, try reducing the resolution to 1080p Or turn off Wi-Fi. An external fan will also help on the 12V, lighter.
Nuances of video recording and storage
Cyclical recording solves the problem of overflowing memory cards, but has its own features:
- 📁 Formatting the map: Use FAT32 (for cards up to 32 GB or exFAT (64 GB)+). Format the card at least 1 time a month through the camera, not through the computer.
- 🔄 Segment length: Optimal — 3 minutes. Longer files (5-10 Minutes increase the risk of data loss in a crash.
- 🔍 File Search: Videos are saved in a folder DCIM/100MEDIA name-named YDXJ0001.MP4. For easy viewing, use apps like Dashcam Viewer (allows you to view video with a map link).
The important point is that Xiaomi Yi does not have a built-in G-sensor (impact sensor), so in case of an accident, the file will not be saved automatically.
- Regularly copy videos to your computer or cloud (e.g., via Google Drive).
- Use memory cards with Write Protection (overwrite protection).
- Install an external G-sensor (e.g. module) TP4056 with accelerometer, connected to the camera through GPIO (soldering).
How to recover lost files?
Comparison with classic video recorders: pros and cons
Using the Xiaomi Yi Action Camera as a registrar has its advantages and disadvantages over specialized devices.
| Criteria | Xiaomi Yi Action Camera | Classic DVR |
|---|---|---|
| Video quality | ✅ Best Details (especially in the 4K), dynamical range | ❌ Often worse in the dark, narrow dynamic range |
| Viewing angle | ✅ 155° (adjustable) | ✅ 120°–170° (fixed) |
| Automatic onset | ❌ Requires manual start or external relay | ✅ Starts when the engine starts |
| G-sensor (shock fixation) | ❌ Not present (needs to be improved) | ✅ There are 90% of models |
| Voice alerts | ❌ No. | ✅ Available (radar, camera warning) |
| Price. | ✅ Cheaper (if you already have a camera) | ❌ Expensive (but often with extended functionality) |
When should you choose Xiaomi Yi?
- 🚗 You already have a camera and you want to save money.
- 🎥 You need the highest quality video (for example, for a blog or insurance).
- 🔧 You are willing to spend time on customization and refinement.
When is the best time to buy a classic registrar?
- 🚨 You need an automatic switch on and a G-sensor.
- 📡 Voice alerts for cameras and radars are important.
- 🔋 You don’t want to mess with food and settings.
💡
Xiaomi Yi is suitable for enthusiasts who are willing to sacrifice convenience for quality, and for everyday use without “dancing with diamonds” it is better to choose a specialized recorder.