technical considerations for idents

Explain the technical considerations for the 3 idents 

Technical Considerations for idents

Aspect Ratio - This is the proportional relationship between width and height. Ratios are expressed in the form "Width x Height". For example, a 4:3 ratio means the picture is 4 units wide and 3 units high. In this instance, the actual physical size of the picture is irrelevant. This is the standard format used for the majority of the 20th century, which can be referred to as 12:9. The format  that is the new standard for modern wide screen TV is 16:9. 

Frame Rates -Frame rates are the rate in which an image displays consecutive images called 'frames'. It can be used for film and video cameras, gaming and motion capture systems. Frame rate is exposed in Frames Per Second (FPS). It helps people within the film industry understand the quality that they need that is used in modern film production, for example 60 FPS would be seen as very high quality, full HD footage. 

Video File Compression - This is where you package a file so it doesn't take up as much space on a disk, to save memory. For example, a file of 20GB is taking up your memory stick. If you compress that, it'll go down a vast amount. This is essential for filmmakers in order to preserve space. There are two main types of video file compression that are used to save space. These are; lossless and lossy. Lossless compression is where the initial quality of the video is not lost, but the file is compressed successfully (this is the most used one). Lossy compression results in data loss but actually compresses the file more. 

Formats - This is how the ident is laid out. For example, the ident used by 'E4' lasts ten seconds, with a very eye-catching theme to it. It appeals to individuals within a diverse society, yet mainly teens as the target audience of pretty much all E4 shows are teens.