When you're creating an ident it is generally a good idea to think about the overall dimensions which are within video screens. In terms of the most common formats, this would be rectangular which is described by ratio of the overall width vs the height. Aspect Ratio, the most common would be 16:9 which is generally the standard HDTV format. However, with older television display less space so the producers generally would tend to keep text and other important elements within a safe area which they wouldn't have the same widescreen quality as the recent newer models of televisions.
Aspect-Ratio!
There is generally no standardised screen format. However this generally just means that there is potentially no control over the final output of the transmitted graphic. This would be a clear limitation, as a graphic could potentially lose its quality. This would lead into analogue as well as digital transmission systems.
Aspect ratio is generally the width of the screen and comparing it to the height. With traditional TV's they have a ratio of 4:3. An example of a 32 inch traditional television screen would generally be 25.5 inches wide and then 19 inches tall. Wide screen aspect ratios are 16:9. 32 inch widescreen televisions would be around 28 inches and then 19 inches tall. Looking at anamorphic, which is known as a cinematic which is conventionally known as the overall screen size in which we watch during a trip to the cinema. They generally have much larger screens which would incidate that the films/ shows and adverts in which are shown would need to have a high resolution.
The ratio would really vary, and this would depend on the actual device in which you would be using.
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