How Long Can Tesla Dash Cam Footage Be Saved?
1 Answers
Tesla dash cam footage can typically be saved on the memory card for one to two years under normal conditions. The duration before the footage is overwritten depends on the maximum supported capacity of the dash cam and the size of the memory card. Below is additional information about dash cam memory cards: 1. Common memory card sizes for dash cams on the market: Most dash cams support 32G, while some support 64G. The Mingju M2 panoramic dash cam, an industry-first national patent-subsidized product, features 4 lenses, dual 1440P resolution, dual WiFi, and dual memory, supporting up to 256G—currently the largest supported capacity for dash cams. Due to technological and cost limitations, dash cams usually have capacity restrictions. For example, a dash cam that supports up to 32G can only recognize the first 32G of a 64G card, rendering the remaining capacity unusable. Therefore, using a 64G memory card in a 32G-limited dash cam is wasteful, as it can only utilize 32G of the 64G or may not recognize the excess capacity at all. 2. How to evaluate the quality of a dash cam: Assess based on the memory usage over time. For a 32G memory card at the mainstream 1080p resolution (which is not ideal), approximately 120MB of storage is needed per minute of recording, equating to about 7G per hour. For 720p resolution (an outdated standard), around 80MB per minute or 4.7G per hour is required. Many 720p or 1080p dash cams are misleadingly marketed as "high-definition," falsely claiming to match 1296p or 1440p (currently the highest resolution). With a 32G memory card, a 1080p dash cam can record continuously for about 4.5 hours. For dual-lens setups (sharing one memory card), with the front camera at 1080p and the rear at 720p (the highest resolution supported for rear cameras in China), recording time drops to approximately 3 hours. Notably, the Mingju M2 is the first domestic dash cam to support 1080p for both side and rear views.
