We really appreciate all the feedback that we get through our contact form each twenty-four hour period. A question that comes up quite often is “What is the maximum recording time of photographic camera XY”, or, “How much recording time do I get with a 32GB card (64GB carte, etc.)?”.

The reply to this question applies not only to dashboard cameras of grade, but to any digital video camera. This article will show you how to summate exactly how much video footage yous are going to get with whatsoever given camera setup, and nosotros will also give yous a elementary dominion-of-thumb formula that allows you to all only calculate the recording time in your head.

**Note:**

If you don’t care almost the math and only desire a quick and dirty formula to summate the recording time of whatever camera, just skip the next couple of paragraphs and continue reading at

**“Quick Formula”.**

The reason why we practice not usually land the recording chapters of the cameras in the reviews is because information technology depends on several factors. One cistron is of course the

**size of the memory card**

(SD menu) used, and the other cistron is the photographic camera’s

**bit rate.**

When both of these are known, you can calculate the maximum recording capacity using a simple formula.

Bear in heed that you tin reduce the scrap rate by lowering video resolution. For case, if your camera’s maximum resolution is 1080p but you set it to 720p, patently this will allow y’all to record more video footage than when you tape in 1080p mode.

## Calculating Recording Time

So based on the size of the memory card and the bit rate, how tin we summate the total recording time?

Let’due south say you are using a Street Guardian SGGCX2 with a 256 GB SD card. Yous are running your device at a 1080p resolution for best video quality, resulting in a bit rate of approximately xv Mbps. Mbps means “Megabit per second”, so each 2nd of video consumes 15 million bits.

256 GB are 256 Gigabyte, or 256 billion bytes. one byte has 8 bits, so the capacity in bits is 256*viii=2048 Gbits. Divide this past fifteen Mbits and the result is the number of seconds you tin record.

^{256,000,000,000*8}⁄_{15,000,000}

=

^{256,000*8}⁄_{15}

=

^{2,048,000}⁄_{15}

= 136,533.33

136,533.33 seconds divided past 60 are 2275.55 minutes, which equals 37.93 hours. In other words, with a 256 GB carte du jour the SGGCX2 can tape continuoulsy for one day, 13 hours and 55 minutes before it will automatically start to overwrite the oldest footage.

So with GB being the bill of fare size in GB, Mbps the bit charge per unit in Mbps, and s the recording fourth dimension in seconds, our formula is

^{GB*eight*grand}⁄_{Mbps}

= s

or to get the upshot in hours directly

^{GB*8*grand}⁄_{Mbps*3600}

= ii.222*^{GB}⁄_{Mbps}

## Quick Formula

If you just need a quick approximation of the total recording time in hours, of a dash cam or whatsoever other digital video camera, you can utilise this quick formula:

2*^{GB}⁄_{Mbps}

In other words,

**take the retentiveness carte du jour capacity in GB, separate it past the bit rate, and multiply the upshot past 2.**

The result volition be most 10% less than the theoretical maximum recording time. Of grade there will as well be some formatting information on the carte, and the infinite is not always used optimally. Thus, the simplified formula will give you a pretty good approximation of your actual recording time.

## Ever Use High Endurance SD Cards In Video Surveillance

If you use a regular memory card in a video surveillance camera, y’all may find out that it won’t last very long, in some cases merely a few weeks or months. Why is this?

Security cameras — no affair whether information technology’southward a dash cam, a security camera, a torso cam, or whatsoever other type of video surveillance — continually write to the SD carte,

ofttimes even 24/vii. In one case the carte is full, the oldest content is overwritten, and a new writing

wheel begins.

Each time the data is overwritten, the wink retentiveness on the card degrades a fiddling bit. Regular memory cards are not designed for this blazon of heavy use. High endurance cards are specifically made for continuous recording, and volition survive much longer.

Of course, the bigger the memory carte du jour is, the more data it will hold. As a event, there will be less writing cycles, so the card will final longer. For maximum SD carte du jour life, nosotros recommend you lot get the largest carte du jour that your photographic camera supports.

Most dash cams support 64GB these days. If your camera can handle it, it’southward preferable to become a larger menu though: Statistically speaking,

**128GB will final roughly twice equally long as 64GB, and 256GB volition last you four times as long.**

If you’re interested in the technical details, cheque out

this article

that goes a lot deeper into the specifics of SD cards and how they piece of work.

**Source: https://dashboardcamerareviews.com/video-recording-time/**