How long can a 32GB memory card record for a dash cam?
2 Answers
A 32GB memory card for a dash cam can record for approximately nine hours. Here is some extended information about dash cams: 1. Introduction: A dash cam is a digital electronic recording device that records and stores information such as vehicle speed, time, mileage, and other driving-related statuses, and can output data through interfaces. 2. Main Components: The main unit, which includes a microprocessor, data storage, real-time clock, display, operation keys, printer, data communication interface, and other devices; speed sensor; data analysis software. 3. Main Functions: Self-check function; identity recognition function; recording and storage of driving time, speed, and mileage; overspeed alarm and recording function; fatigue driving reminder function; accident suspicious point recording and analysis function; data communication function.
I've driven for many years and used several dash cams. How long a 32GB memory card can record mainly depends on the video quality you set. If set to 1080p HD with a bitrate around 10Mbps, it takes about 75MB of space per minute. A 32GB card has 32768MB of space, so it can record for about 5 to 6 hours. But in reality, it lasts longer because different dash cams have varying compression efficiency; for example, some night modes take up more space, while daytime modes use less. It's advisable not to use the highest quality setting—choosing 720p can extend recording to around 10 hours, which is sufficient for daily commutes. Also, pay attention to the card's quality; opt for brands like Samsung or SanDisk to avoid read/write errors that could interrupt recording.
