How Many Days Can a Dash Cam Recordings Generally Be Saved?
2 Answers
The number of days a dash cam can save recordings depends on the storage card capacity and the set recording resolution, generally ranging from 3 days to a week. Generally, dash cams with larger memory capacities can store recordings for longer periods. Taking 1080P video quality as an example, a 16G memory card can typically record for 100 minutes; a 32G memory card can record for 200 minutes; and a 64G memory card can record for 400 minutes. Currently, dash cams on the market record in a loop-recording mode. The recorded videos are segmented into clips of certain durations, such as 1 minute, 3 minutes, 5 minutes, or 10 minutes, and stored in the memory card. When the memory card is full, newly recorded videos will directly overwrite the oldest video clips, which are the ones farthest from the current time. The advantage of this mechanism is that it prevents the inability to continue recording due to insufficient storage space on the memory card.
I think the number of days a dashcam can save footage is quite subjective. From my driving experience, it really depends on the size of your memory card. For example, I use a 64GB card with 1080p HD resolution in continuous recording mode, where files take up about 1GB per hour. I commute daily, driving two hours a day, so when the card automatically overwrites old footage, it can store approximately five days of data. However, video quality affects file size—if you choose 4K resolution, the same card capacity won't even last three days. I also recommend regularly formatting the card to prevent file corruption and data loss. It's better to choose a reliable brand card for stability; for instance, I've had good experience with Samsung cards—no issues so far. A larger capacity is preferable since, in case of an accident or fraud attempt, having several days of evidence stored provides extra security.
