What does loop recording mean for a dash cam?

[McLucille]

Loop recording for a dash cam refers to the continuous video recording function of the device. Modern dash cams are equipped with memory cards, typically ranging from 4GB to 32GB in capacity. As the dash cam records in loop mode, the saved videos accumulate, gradually occupying the memory card's space. When the memory card reaches full capacity, the loop recording feature automatically deletes the oldest recorded videos (those furthest from the current time) to free up space. This ensures the continuous operation of the loop recording function, allowing the dash cam to store the most recent video footage.

[MacJosiah]

I did some research on loop recording when I installed my dash cam before. Simply put, it's a feature that automatically overwrites old footage when storage is full, allowing the device to run 24/7. My dash cam is set to record 3-minute clips, and the memory card can store about 2-3 days of content. Without this feature, you'd either have to manually delete videos or risk sudden storage failure stopping recordings – my friend once missed capturing a crash-for-cash scam because of this. Now I use a 128GB high-speed card with 1080P resolution, which works perfectly – no missed recordings and no daily cleanup hassle. Remember to manually format the memory card every six months to prevent lagging and file errors.

[GemmaLee]

Loop recording is like equipping your dashcam with an intelligent housekeeper. When the storage space is nearly full, it automatically deletes the oldest video clips to free up space for continued recording. Through disassembly, I discovered that dashcams divide the memory card into several blocks, each storing a fixed duration of video, ensuring that overwriting doesn't damage other important files. I recommend prioritizing devices with G-sensors, as emergency videos can be individually locked to prevent overwriting. The memory card speed should also be fast enough—Class 10 or above—to avoid frame drops.

[LaCamilla]

The core value of loop recording is to ensure uninterrupted driving safety. Last year, I was rear-ended on the highway, and the dashcam completely saved the 20-minute video before the accident, thanks to the loop function automatically overwriting older, useless footage. It ensures that the latest 4 hours of footage are always preserved on a 32GB card, saving space while allowing for evidence collection at any time. Remember to turn off parking monitoring to avoid draining the battery, and the emergency file lock function must be enabled.

[ONathan]

When I first bought a car, I didn't understand loop recording either. Later, I realized it's like the automatic cleanup of a phone photo album. After setting 1-minute or 5-minute clips, the device will rollingly update videos, automatically deleting old footage when full to record new ones. Beginners are advised to set 3-minute clips—too long makes it hard to locate key footage. Always use genuine memory cards, as off-brand ones may cause overwrite failures. Regularly formatting the card on the device itself is more stable than doing it via computer.