
The automatic deletion interval of a dash cam depends on the set resolution and the capacity of the memory card. Higher resolution results in clearer video recordings but also consumes more memory, leading to shorter automatic deletion intervals. Conversely, a larger memory card capacity extends the automatic deletion interval. Below are relevant details: 1. Recording Duration: Generally, a 16GB memory card can record 90 minutes of 1080P30FPS video; a 32GB card can record 180 minutes; and a 64GB card can record 360 minutes. When the memory card is full, the dash cam will automatically delete the oldest unlocked videos based on recording sequence. 2. Non-Automatic Deletion: Notably, emergency recordings are locked and cannot be automatically deleted. Manual deletion is required, which can be done in several ways: directly selecting the video files to delete on the dash cam and pressing the corresponding button as indicated by the on-screen icon (most dash cams lack a direct delete button and require navigating to the file browsing interface to delete). 3. Formatting for Deletion: Alternatively, you can download the dash cam's designated app on your phone, connect to the dash cam via WiFi, and access the "Album" tab at the bottom of the app's main interface to view and delete videos. Another method involves removing the memory card, inserting it into a card reader connected to a computer, and deleting files there. For bulk deletion, export important videos first, then format the memory card.

My driving experience tells me that the deletion of dashcam footage isn't based on fixed timing, but rather depends on loop recording settings and memory card capacity. With my 64GB card set to 1080p HD recording, it automatically overwrites old files every 10 minutes because recordings are saved in segments - when full, it starts overwriting from the beginning. Without parking mode enabled, driving two hours daily means footage gets completely overwritten every 3-4 days. In practice, I never manually delete videos as everything's handled automatically. Key reminder: always check for important events (like accident footage) before overwriting occurs, and promptly export them to phones or computers. Smaller capacity cards overwrite faster with higher data loss risk, which is why I chose mid-range capacity to minimize hassle. Additionally, extreme weather (e.g., summer heat) may accelerate SD card wear - reducing recording quality or adding heat dissipation stickers can help. Overall, the deletion process is fully automated, only requiring occasional card formatting or firmware updates.

I often tinker with electronic devices, and the deletion mechanism of dash cams is actually quite smart. Most dash cams support loop recording, where video files are stored in segments, and when the memory is full, the oldest files are automatically overwritten. For example, my 128GB card can store about 12 hours of video at high frame rate settings, and then it overwrites part of the old content every hour. But this doesn’t mean you can be completely at ease—it’s best to check the user manual to set the overwrite interval, as some can be adjusted to overwrite every 5 minutes. I’ve also noticed that the higher the recording quality (e.g., 4K), the faster the deletion and the quicker the card fills up. Regular maintenance is key—clean the card quarterly or set up automatic overwrite functions to avoid performance issues caused by file fragmentation. The card’s lifespan is also limited; it should be replaced every two years, or read failures could lead to video loss. In short, optimizing settings to reduce manual operations saves time and boosts efficiency.

When using a dashcam, I found that the deletion frequency is mostly controlled by automatic loop recording, so there's no need to worry much about daily deletions. Most dashcams default to overwriting old footage every 5-10 minutes, depending on the card size. For example, with a 64GB card, standard recording can store 5-6 hours of footage, and overwriting takes about an hour. However, the key concern is safety: sometimes important footage might get overwritten in accidents, so it's recommended to briefly check stored files weekly and export crucial events to your phone. This maintenance is simple and effective, helping prevent potential risks. Choosing a reliable card with adequate capacity can save you trouble.


