Xiaomi TV does not play video from the flash drive: causes and solutions

You plugged a flash drive into a Xiaomi Mi TV, but instead of the long-awaited movie, the “Not Supported Format” error appears on the screen, or the device does not see files at all? This problem is familiar to many owners of Xiaomi smart TVs – from budget Mi TV 4A to flagship Q2 QLEDs. The reasons can lie in both format incompatibility and software failures of the PatchWall system.

In 80, you can solve the problem without going to the service center, just prepare the USB drive correctly, update the firmware or adjust the playback settings. In this article, we will analyze all possible scenarios, from basic checks to advanced methods like forced codec installation, you will learn what formats are supported by Xiaomi TVs out of the box, how to convert video without loss of quality and what to do if the TV does not recognize the USB- drive itself.

We'll focus on the Mi TV 5 Pro, Mi TV Q1E and Redmi Smart TVs, which often have specific problems playing.mkv and.mp4 files with high bitrate. If you've tried to restart the TV and change the flash drives, but the results haven't changed, go straight to the codecs and firmware sections.

Basic Diagnostics: What to Check First

Before diving into the technical details, rule out the obvious reasons. Start by checking the USB- drive itself and the TV ports:

• 🔌 Port USB: Connect the flash drive to another connector on the TV (if there are more than one).
• 💾 Flash drive: test it on another device (computer, laptop) if the files don't open and there's a problem with the drive.
• 🔄 Reboot: Turn off the TV for 30 seconds, then turn it back on. This will reset the PatchWall cache.
• 📁 File structure: Make sure the video lies at the root of the flash drive or in a folder without nested subfolders (deep nesting can cause crashes).

If the flash drive works on other devices but the TV can’t see it, try formatting it in FAT32 (for files up to 4 GB) or exFAT (for files over 4 GB). Don’t use NTFS – many Xiaomi models don’t support this format for media playback.

⚠️ Warning: Some flash drives with USB 3.0 (blue connectors) may not work properly with USB 2.0 ports on Xiaomi TVs. Try the USB 3.0 → USB 2.0 adapter or other drive.

2. Supported video formats: why the TV can't see the file

Xiaomi PatchWall TVs officially support a limited set of video formats. If your file has a custom codec or container, the TV will simply ignore it. Here is a full list of compatible formats for most models (relevant to firmware 2023-2026):

Critical feature: Xiaomi TVs often refuse to play.mkv files with multichannel DTS 5.1 or DTS-HD sound, even if the video codec is supported, in which case only converting the audio track to AC3 or AAC will help.

To determine exactly which codec is used in your file, use the free MediaInfo program (available for Windows/macOS), open the problem file in it and check the lines Format (container), Codec ID (video) and Audio Format. If it specifies HEVC 10-bit, DTS-HD or TrueHD, the TV will not play them.

💡

If the TV sees the file, but the video is “slowing” or is jerking, try to reduce the bitrate to 20-30 Mbps using the HandBrake program.

3. Video conversion for Xiaomi TV: step-by-step instruction

If your file is incompatible, you need to convert it, and the best way to do this is with the free HandBrake program (you can download it from the official handbrake.fr website).

1. Open HandBrake and click Open Source to download the original file.
2. In the Presets section, select Fast 1080p30 (for Full HD) or Fast 4K (for Ultra HD).
3. Go to the Video tab and set: 📹 Video Codec: H.264 (AVC) 🔢 Framerate: Same as source (or 30 fps if source 24 fps) 🎯 Quality: RF:18–22 (optimal size/quality ratio)
4. In the Audio tab, select: 🔊 Codec: AAC (or AC3 if you need Dolby Digital) 📢 Bitrate: 160–320 kbps

In the Save As field, specify the path to save and click Start Encode.

For multichannel audio files (DTS 5.1), additionally adjust the audio tracks:

1. Click Audio → Add Track and select the original track.
2. In the drop-down menu of Codec, install AC3 (Dolby Digital).
3. Specify Bitrate: 640 kbps (standard for 5.1).

4 Problems with USB- Drive: Flash drive is detected, but files are not readable

If the TV sees a flash drive but doesn’t display files or writes “No supported files,” the problem may be:

• 🗃️ File system: Xiaomi only works stably with FAT32 and exFAT. NTFS is supported selectively (e.g. Mi TV Q2 works, but Redmi TV A65 doesn’t).
• 🔠 File name encoding: Avoid Cyrillic, spaces, and special characters (!, @, #. Use Latin and under-emphasizing (film_2026.mp4).
• 🛡️ Write Protection: Check if the switch is locked on the flash drive body (relevant for the MicroSD in the adapter).
• 🔋 Power shortage: Some flash drives require more power than the USB- TV port can give. Try connecting via an externally powered hub.

To check the file system:

1. Connect the flash drive to the computer.
2. Open this computer (Windows) or Disk utility (macOS).
3. See the format in the column File system.
4. If there is NTFS or RAW, format the drive in exFAT (right click → Format).

⚠️ Warning: On the Xiaomi Mi TV 4S and 4A TVs (2018–2019), there is a bug with exFAT reading on flash drives larger than 64 GB. In this case, use FAT32 (but remember the 4 GB limit per file).

5. Firmware Update: How to Fix Playback Errors

If the flash drive used to work, and now the TV stopped playing video, it may be the old firmware. Xiaomi regularly releases updates for PatchWall, which fix bugs with support for formats.

1. Go to Settings → About TV → System Update.
2. Click Check Updates. If a new version is available, install it.
3. After the update, perform a cache reset: Settings → Apps → Clear the cache.

If the automatic update does not work (for example, due to regional restrictions), you can install the firmware manually:

1. Download the latest firmware version for your model from the official Xiaomi website (TV section).
2. Unpack the archive and copy the update.zip file to the root of the flash drive (formatted in FAT32).
3. Connect the flash drive to the TV and go to Settings → About TV → Update via USB.
4. Confirm the installation and wait for the restart (it will take 5-10 minutes).

💡

After manual firmware update, the TV can reset your Wi-Fi settings and Mi Account. Write down your passwords in advance!

For the Mi TV Q1E and Q2 QLED (2022-2026), beta firmware with advanced codec support is available to install:

1. Sign up for the Mi Community Testing Program.
2. Download the beta version of the firmware (the file will be called miui_tv_q1e_global_beta_*.zip).
3. Install it via USB Update (similar to standard firmware).

6. Alternative ways of video playback

If none of the previous methods worked, use the workarounds:

• 📱 Mi Home/Google Cast: Install the Mi Home or Google Home app on your phone, connect to the same network as your TV, and stream video from your mobile device. Supports formats that are not played from a flash drive.
• 🌐 DLNA- Server: Configure a DLNA- server on your computer (e.g., via Plex or Kodi) and connect to it via the Media Player app on your TV.
• 🖥️ External Player: Connect to Amazon Fire Stick, Nvidia Shield or Xiaomi Mi Box TV – they support more formats than the built-in Xiaomi player.
• 📂 Cloud Services: Upload the video to Google Drive or Mi Cloud, then open it via your browser on your TV (pre-installe TV Bro or Puffin TV from the Mi App Store).

For the phone broadcast:

1. Install the LocalCast or AllCast app on your smartphone.
2. Open the video in the gallery and select the option to Broadcast → Mi TV.
3. The TV will have a connection request – confirm it.

If you use Plex,

1. Install Plex Media Server on your computer and add a video folder.
2. On the TV, install the Plex app from the Mi App Store.
3. Sign in and select your server – videos will be streamed without conversion.

7. Hardware problems: when to carry in the service

If you’ve tried all the software techniques, but the TV still doesn’t play flash drive video, the problem may be the hardware:

• 🔌 Faulty USB- port: Ports on Xiaomi TVs often fail due to mechanical damage or overheating. Check the port for bent contacts or foreign objects.
• 🔧 Motherboard problems: If the TV doesn’t see any USB- device (mouse, keyboard, external hard drive), it may indicate a faulty south axle or controller USB.
• 🔥 Chipset overheating: The Mi TV 4X and 4C models have a problem with the Amlogic T962 processor overheating, which causes the system to "hang" and not read the flash drives.

To diagnose a hardware malfunction:

1. Connect your USB- to your TV, or your keyboard, and if it doesn't work, it's the ports or the board.
2. Try connecting the flash drive via the OTG- cable (if there is a microUSB port on the TV).
3. Check if the back of the TV is warming in the processor area (top left corner). If the temperature is above 60°C, you need to clean the dust or replace the thermal paste.

⚠️ Warning: On the Xiaomi Mi TV 5 Pro (Model 2020) TVs, there is a defect in the soldered contacts of the USB- ports. If the port stopped working after a fall or impact, it can only be restored by soldering at the service center.

The cost of repairs in official Xiaomi service centers (for 2026):

• Replacement of USB-port: 1,500–2,500 ₽
• Motherboard repair: 3,000–6,000 ₽
• Dust cleansing + Thermopaste replacement: 1000–1 800 ₽

FAQ: Frequent questions about video playback on Xiaomi TV