Our GRAV-1 video recorder offers the ability to store video data using a USB memory.
The device supports USB flash drives with a capacity of up to 32 GB and uses FAT32 format. It is possible to save image files in JPEG or BITMAP format. Especially in the case of jpeg format, the file size per sheet is about 100 KB.
Theoretically, up to 320,000 images can be stored.
However, the FAT32 format has a limit on the number of files, and the maximum number of files that can be stored in the root directory is about 65,000.
As a result, even if there is plenty of space, the number of images that can be stored is limited to 65,000.
To deal with this problem, the GR-AV1 automatically creates three folders and stores files in these folders in order.
However, it is not possible to change the directory structure, and therefore will continue to be affected by the file limit described above.
