Advantages of recording a video in 4k
We already know that the 4k resolution is four times higher than Full HD or 1080p the higher resolution and the better image sharpness. But if I’m going to export a video in Full HD, why record it in 4K? There are several advantages:
The possibility of making camera movements in postproduction.
By having a resolution 4 times higher, we have two options: reduce the image and adapt it to Full HD, or keep the size and choose the part that interests us and even make camera movements at the time of editing, this ensures us fluid movements and without loss of quality.
Low light conditions
We know that in unfavorable light conditions the use of the telephoto lens is very complicated, although we have high quality optics we will always have a higher f-number than when working on angles. Once we take this into account and know the advantage mentioned in the previous section, we will have a video in Full HD without the need for an optical zoom.
New compression codecs
At the moment we have a very powerful compression codec such as the H.265, it duplicates the compression of the H.264 and partially solves one of the biggest disadvantages of the 4k files, which is specified below.
Evolution of the market itself
Until a few years ago those who bought a camera for 4k video were not sure how the market would behave. But we can already see that all the big companies of television, video games, mobile phones and computers are betting on this technology.
Greater color depth
Even in 12-bit videos.
As everything in life, there are always good and not so good things.
This are some of the disadvantages, which we think the video in 4k have:
By having higher resolution and a great depth of color, the size of these files is huge. We need a large capacity to store all this information. This amounts to a great expense on hard drives and memory cards. These cards have a high cost since we not only need large capacity, but high write speeds to process all this information.
The greater weight of the files also requires us to have better equipment for editing this problem is largely solved with the use of proxies, which allows us to work with lower resolutions and be able to export them to their source format without losing quality.
Render and export times are longer, these increase significantly with the use of effects, filters, 3d fonts … nothing is free when we perform a video production and assembly service in 4k.
Thanks to the H.265 codec, export times are considerably reduced, although they remain large.
The consumption of products via streaming is more demanded, so in order to view content in 4k we need to have a minimum bandwidth of at least 30 Mbps, as we know, there are many places where this is currently impossible.