Applies to: All Reolink cameras SD card
If you find the videos in the playback can't erase themselves automatically when the SD card is full, there are two causes below:
Cause 1. The Overwrite is not enabled.
The SD card will overwrite the old recording files and store new recordings when it becomes full.
Here we'll guide you to enable/disable overwrite via different platforms. Please refer to the articles below:
How to Enable/Disable microSD card/HDD Overwrite
Cause 2: The SD card is not compatible or defective.
Please refer to the requirements below to choose the right SD card for Reolink cameras, otherwise, the recording function may not work properly.
| Item | Requirement |
| Capacity | 8GB or 16GB card is suggested (Up to 64GB) |
| Read and Write Speed | Class 10 or higher |
| Format | FAT32 |
If you're not sure about whether your SD card is compatible, please take a photo of the SD card or share a product link then contact support for help.
Cause 3: The camera issue.
If you have more than one Reolink camera, please swap the SD card to perform a test. If the issue persists, please contact support for help.