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 circumstances. The duration before the footage gets overwritten depends on the dash cam's maximum supported capacity and the size of the memory card. Below is additional information about dash cam memory cards: Common memory card sizes for dash cams in the market: Most dash cams support 32G, with some supporting 64G. The Mingju M2 panoramic dash cam, an industry-first national patent-subsidized product, features a single unit with 4 lenses, dual 1440P resolution, dual WiFi, and dual memory, supporting up to 256G—currently the largest memory capacity supported by any dash cam. Due to technical and cost limitations, most dash cams have capacity restrictions. For example, a dash cam that supports a maximum of 32G will only recognize the first 32G of a 64G card, leaving the remaining capacity unusable. Therefore, using a 64G memory card in a 32G-limited dash cam is wasteful, as it can only utilize 32G or may not recognize the excess capacity at all. How to evaluate the quality of a dash cam: Judge based on the memory usage over time. For a 32G memory card with the current mainstream 1080p resolution (which offers suboptimal quality), approximately 120MB of capacity is needed per minute of recording, amounting to about 7G per hour. For 720P resolution (an outdated and inferior product), about 80MB per minute or 4.7G per hour is required. Many 720 or 1080 products are misleadingly marketed as "high-definition," imitating the superior 1296 or 1440 (currently the highest definition) products. With a 32G memory card, a 1080P configuration can record continuously for about 4.5 hours. If the dash cam has front and rear lenses sharing one memory card (front at 1080P and rear at 720P—720P is currently the highest resolution supported for rear views in China, while the Mingju M2 is the first domestic product to support 1080P for side or rear views), the recording time is approximately 3 hours.
