Will the dash cam automatically overwrite when the memory is full?

3 Answers
SanMargaret
07/29/25 7:02am
When the memory of a dash cam is full, it will automatically overwrite the oldest recordings due to its "overwrite" function. This feature allows vehicle owners to avoid frequently replacing the memory card, making it more convenient to use. A dash cam is an instrument that records images, sounds, and other relevant information during vehicle travel. Essentially, it is a car camera that can capture high-definition footage, completely documenting the visuals, audio, and vehicle conditions during the journey. After installing a dash cam, it can record the entire driving process in video and audio, providing evidence for traffic accidents.
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RiverFitz
08/12/25 11:28pm
I've used quite a few dash cams, and generally when the memory is full, they automatically overwrite old files. This is called the loop recording feature. It continuously records new videos and then deletes the earliest files to free up space, which is very convenient. But you have to make sure the settings are correct: choose loop recording mode, and don't set the resolution too high, like 4K, otherwise the overwriting frequency slows down. I've also found that if the card is too full for too long or has too many file fragments, it might malfunction and fail to overwrite. In that case, manually formatting it can solve the problem. I recommend using a high-speed SD card with at least 32GB capacity and regularly checking the card's status to avoid recording interruptions. Safety first, after all.
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StJonathan
10/04/25 5:17am
After driving for half my life, my dash cam often fills up its memory, but it automatically overwrites old clips, saving me the hassle. I've experienced smooth overwriting, but once it got stuck and stopped working—later I found out it was due to a file system error. A word of advice: don’t let the card stay over 80% full for too long, and set it to record in 5-minute segments. This ensures more stable overwriting and prevents losing critical footage. New drivers, remember to choose a dash cam model that supports this feature.
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