TF Card Frequently Asked Questions

Q: Why does a TF card show many files when connected to a computer, take up memory, but has no playable videos?

Answer: After formatting in a camera, the TF card creates a special file system and generates MP4 pre-storage files. During recording, videos are stored sequentially from the file with the smallest serial number until the card is full, after which new recordings overwrite the files with the smallest serial numbers. Files without recorded content cannot be opened. When searching for recordings, you can start from files with smaller serial numbers.

  

Q: Why does my device show a formatting failure message, but it doesn't show any errors when used on a computer or other webcams?

Answer: When formatting an SD card, our device performs a comprehensive check on the entire card. If the SD card has many bad blocks or unstable areas, a formatting failure message may appear. This is to ensure stable recording without frame drops and to avoid abnormalities during use.

 

Q: Why can't playback videos on the TF card be opened with computer video software, and which software should be used?

Answer: Some computers' default media players only support H.264 or earlier video codecs. The camera uses H.265 encoding by default. You can use Tenda's "VideoConverter" to convert the recording files before playback. The download and usage guide for "VideoConverter" is available at: https://www.tendacn.com/material/show/762172101025861.

It is recommended to use VLC media player. Download VLC here: VLC official website

  

Q: Why choose security-specific TF cards rather than regular TF cards for surveillance cameras?

Answer: a High-load abuseSurveillance cameras write continuously 24/7. Regular TF cards are designed for storing static files (like photos or videos) but are often used in high-write scenarios, far exceeding their design limits, significantly reducing their lifespan.b. Unsafe operating habitsPulling out the card directly instead of using 'safely remove' increases the risk of file system corruption. Interrupting power during writing (e.g., unstable power from a power bank during file transfer) also causes issues.

  

Q: How to check if a TF card is good but the camera doesn't detect it?

Answer: Place the TF card in a card reader and connect it to a computer. If recognized, you can use a professional tool like MyDiskTest for testing.Tool download: https://m.3dmgame.com/soft/175448.html

  

Q: Could you give me some TF card purchasing suggestions?

Answer: TF cards vary greatly in quality on the market. It is recommended to choose well-known brands with service and after-sales support (e.g., Tenda, Ezviz).

  

Q: Why format a TF card first?

Answer: Formatting is required because Tenda's unique recording storage system can extend the TF card's lifespan and improve data safety and stability compared to other storage methods.

  

Q: Can a TF card continue recording if the camera is offline?

Answer: YES, but be aware that power interruptions can cause playback recorded offline to have time discrepancies or overwrite previous recordings. Therefore, if the device restarts without connecting to an NVR, it is recommended to reconnect it to the network as soon as possible.