4K video has become very popular in recent times, being the best technology in quality and availability in the video production industry. This is very evident in that even well renowned and distinguished streaming sites have integrated 4K technology in their framework. This has resulted in most people upgrading their storage devices and micro SD cards to cater for the 4K video resolution. This development is coupled with many people seeking to update their storage devices ask, how much 4K video can 64 GB hold? Before answering the question, you should first understand what the term 4K video resolution really means when it comes to our screens, be it our TVs or our PC monitors.
What is 4K Video Resolution?
4K video resolution refers to high definition (HD) video that as much as four times the resolution of a 1080p HD video (1920 x 1080 pixels). The 4K video resolution also comes in two standard resolutions depending on which part of the industry it is being applied in. For the film and video production industry, the Digital Cinema Initiatives standard for the 4K resolution is 4096 x 2160 pixels. On the other hand, when it comes to monitors and televisions, the standard for 4K resolution is 3840 x 2160 pixels.
Fundamental Viewing Qualifications
The 4K adaptive bit rate systems need between 10 Mbps and 20 Mbps of bandwidth to operate. For instance, Netflix, an online video streaming service provider, requires an internet connection speed of about 25mbps or higher to allow for streaming content in 4K resolution. To view 4k resolution content, a 4K TV or a monitor is required. To further help in the ratification of 4K resolution videos, the UHD alliance announced an ultra HD specification at the consumer electronics show in 2016. The UHD Alliance is a bloc of more than 50 technology companies, content distributors, entertainment studios, and consumer electronics manufacturers that establish performance requirements for video and audio attributes for consumer satisfaction. The specification outlines the features included in devices to ensure compatibility with other 4K content and hardware.
For devices to be certified, they must offer the following:
- A resolution of at least 3840 x 2160 or higher.
- The 10-bit color depth allows for 1024 shades of each of the three primary colors, is blue, red, and green.
- A good blend between peak brightness and black level is either more than 1000 nits peak brightness and less than 0.05 nits black level or more than 540 nits peak brightness and less than 0.0005 nits black level.
- A high dynamic range (HDR) for color accuracy. HDR expands the range of bright and dark levels shown on a 4K device and improves color vibrancy and richness to simulate real-world brightness and darkness.
4K Resolution Upscaling
It is also possible for lower resolution images like 1080p HD to be up-scaled on 4K monitors or 4K TVs. The 4K devices have exclusive hardware such as video scaler and image processing algorithms to help in increasing the pixel count in lower resolution images. Other devices built for this purpose are upscaling boxes with more processing power than the hardware built-in 4K TVs and 4K monitors.
4K or Ultra HD?
It is also important to note that 4K and ultra HD are used interchangeably, although ultra HD can refer to resolutions above 4K. Ultra HD needs a minimum resolution of 3840 x 2160 pixels but includes resolutions as high as 8K.
Merits and Demerits
The advantage of 4K resolution is that it offers images of superior quality at a higher resolution. Industries like the manufacturing and healthcare industries benefit a lot from this high resolution because high quality and detailed images are a necessity. The downside to the 4K resolution is that it demands high bandwidth and storage requirements, which would explain the need for upgrading storage devices to accommodate these 4K videos.
With that said, you are now certainly familiar with what a 4K video means if you did not before, and we can now focus on our initial question. A micro SD card of 64 GB can hold approximately 1 hour and 20 minutes of 4K content. However, this is not the only factor to consider when choosing an SD card for storing your 4K videos, whether you are purchasing a new one or changing from one to another.
How big is a 1 hour 4K Video?
As we have seen when discussing 4K resolution, its video is way bigger than a 1080p resolution video. To put this into perspective, a 64 GB micro SD card would allow up to 5 hours of 1080p footage, while it only allows 1 hour and 20 minutes of 4K footage. This significant difference can be explained by the frame rate employed by the two resolutions. A 4K video would require 375MB for a minute of footage at 30 frames per second.
How much Storage do I need for a 4K video?
An hour of 4K video footage requires about 110 GB of storage, which translates to a rate of 2 GB a minute. As far as you can tell, more space is needed for a 4K video than a standard video of a lower resolution. This means that this is a factor you should consider when choosing what 4K SD card to pick. You should keep in mind that your memory card must accommodate a larger 4K video size.
How much 4K Video can 128GB hold?
It is also important to know how micro SD cards of different Storage perform when it comes to 4K footage. A typical 128 GB micro SD card can store up to 4 hours 30 minutes of 4K footage. This, however, varies depending on the brand of the 4K SD card you are using. This is because the technologies employed by different brands or manufacturers differ, which affects the performance of the SD cards differently. Furthermore, remember to check the SD cards’ Mbps reading and writing speeds to help you make the best decision.
How much 4K Video can 256GB hold?
This again is dependent on the memory card you are using. For instance, the Samsung 256 GB micro SD card can hold up to 12 hours of 4k video content, which is quite a figure and way above what normal memory cards offer! The reason why Samsung was able to achieve this feat is that it employs V-NAND technology in its memory cards. It also boasts a reading speed of 95 Mbps and a write speed of 90 Mbps. This card will meet your storage needs for your 4K content with these specifications but will need you to dig a little deeper in your pocket, which is rightfully justified. This, however, does not mean that you always have to go for the most expensive cards when looking to purchase one. You should simply carefully evaluate your needs, like the recording time you actually need, and decide based on that.