TF Card Frequently Asked Questions

1.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.

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

Answer: Some built-in computer players only support video files encoded with H.264 or lower. Cameras use H.265 encoding, so it is recommended to use VLC player.Download VLC here: https://www.videolan.org/vlc/#download

3.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.

4.How to check if a TF card is good if 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

5.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).

6.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.

7.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.