Your Home Theater System Bible

Understanding Video Resolution

video resolution1At the outset, it is vital that we have a sound understanding of what is meant when we talk about video resolution. Note that when we refer to resolutions in digital video, we simply pertain to the number of pixels displayed on screen. There are two types of resolutions. First, is what is called spatial resolution. This refers to the width as well as the height of the images that are displayed on the video display device and is measured in pixels. In other words, this represents the total number of pixels that are enclosed in a single video or image frame. The second type of resolution is called temporal resolution, which actually signifies the frame rate or the number of frames shown per second (resolution over time).

Let’s consider a typical computer monitor that has 1024×768 resolution. This only implies that there are 1024 columns of pixels found horizontally and 768 rows of pixels found vertically on the computer display screen. At this point, it is vital to stress that the higher the resolution of a digital device, the higher will be its potential for projecting better quality images. On the other hand, although resolution is not the only factor that affects the quality of an image that will be projected onto an image display device, still it plays a vital role in the total quality of images created and projected onto any display device. You also need to bear in mind that higher resolution does not principally mean that bigger images will be displayed onto the image display device. It only means that there are more pixels in the images that will be displayed. Nonetheless, higher resolution images are essentially matched to larger image display devices.

When deciding on what image display device would best give you the best home theatre experience that you are looking for, you also need to consider the aspect ratio of the image display device. The aspect ratio simply refers to the width of a picture or image display device or screen in relation to its height, and are represented in the form “width x height.”

A better understanding about video resolution will prove to be vital especially when you are planning to join a number of video sources with a couple of  image display devices. To have an image display device, like a HDTV, a TV, computer monitor, or other image display device project images that are coming from a certain video source, it has to be well-matched with the resolution of the video source.

There are three most typical aspect ratios known: other variants of these are likewise available on the market. However, most video as well as film production, usually make use of these aspect ratios:

1. 4×3 aspect ratio, which is sometimes referred to as 12×9, is the typical TV format that has been made available throughout the 20th century.

2. 16×9 aspect ratio. This display screen format has gained recognition as the new standard for widescreen TV, DVD as well as the high-definition video. Nearly every PC monitor as well as laptop manufacturers had moved to the 16×9 aspect ratio by 2010.

3. 21×9 aspect ratio, is a rather wide display format that is used for movies that are released on theatres.

Most image display devices as well as video sources are capable of supporting a variety of resolutions. Nonetheless, you will still need to ensure that there’s no less than one resolution that both devices support. Doing this will guarantee a quality viewing experience for you and your family.

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Posted on August 2, 2013 by 0 Comments Short URL

Author:

Alphonso Soosay, an accomplished musician and sound recording specialist has been in the industry for more than 30 years. In this blog Alphonso shares all his experiences and knowledge in the recording and home theatre industry. Alphonso Soosay's Blog

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