Applies to: Annke cameras with micro SD card or micro SD card slot.
Note:
The micro SD card is only for motion detection recording
The camera stream of 720P is generally 1024kbps, and the stream of 1080P camera is generally 1024kbps-2048kbps.
The micro SD card is only for motion detection recording
The camera stream of 720P is generally 1024kbps, and the stream of 1080P camera is generally 1024kbps-2048kbps.
Bitrate affects video quality and the size of recording files. In general, the higher the bitrate is, the better the image and audio quality will be, and the bigger the file size will be, vice versa.
Here is the formula that demonstrates the relationship between the SD Card Capacity, the Bitrate, and the Recording Time.
The formula shows that Recording Time is inversely proportional to Bitrate under the same SD Card Capacity.
Here are some references for the Recording Time under different Bitrate and SD Card Capacity.
| Max. BitRate/kbps | Recording Time/h | ||
| 16GB | 32GB | 64GB | |
| 1024 | 37.3 | 74.6 | 149.1 |
| 1536 | 24.9 | 49.7 | 99.4 |
| 2048 | 18.6 | 37.3 | 74.6 |
| 3072 | 12.4 | 24.9 | 49.7 |
| 4096 | 9.3 | 18.6 | 37.3 |
| 5120 | 7.5 | 14.9 | 29.8 |
| 6144 | 6.2 | 12.4 | 24.9 |
| 7168 | 5.3 | 10.7 | 21.3 |
| 8192 | 4.7 | 9.3 | 18.6 |
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