What is the typical memory card size for a dash cam?
1 Answers
Currently, the mainstream options are 8GB, 16GB, and 32GB. Most dash cams on the market support MicroSD cards up to 32GB. 1080P has become the standard resolution for dash cams. Taking an 8GB memory card as an example, it can store up to 180 minutes of 1080P video, which is barely sufficient. Therefore, memory cards below 8GB are no longer commonly used. However, dash cams, as high-speed read/write devices, have specific requirements for storage and read speeds. The Class rating is the current standard for measuring MicroSD card speeds, with classifications including Class0, Class2, Class4, Class6, and Class10. For instance, a Class2 memory card indicates a minimum write speed of 2MB/s, and higher numbers correspond to faster write speeds. It is recommended to use a memory card with at least Class6 speed for dash cams to ensure smooth video storage and prevent recording corruption. Additional information: 1. Imaging issues: At high speeds, the scenes captured by dash cams change rapidly, posing a significant challenge to the device's imaging and processing speed. To test this, we printed a mock license plate on A4 paper and had a person hold it by the roadside. A car equipped with a dash cam then passed by at different speeds to compare the impact of speed on the dash cam's recording quality. 2. Pixel issues: 1080P is a high-definition video format, and most mainstream dash cams support it. The term "megapixels" refers to the number of light-sensitive elements on the sensor. For 1080P resolution, 3-5 megapixels is ideal. For wide-angle lenses, avoid blindly pursuing extreme specifications, as larger angles can lead to more noticeable image distortion, which may render the footage unusable as evidence. When selecting a memory card, prioritize those with a write speed of Class6 or higher. Although dash cams record in loops, to maximize storage duration, it is advisable to use 16GB or 32GB memory cards.
