Digital video: What is bitrate?
As we have been mentioning, the bitrate refers to the amount of information when reproducing a video file that our computer is able to read for every second.
For this reason, in the same way that it happens with the image size, the greater the data flow, the higher the quality of the material.
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The bitrate can even be more decisive than the size of the image to define its quality, since when viewing a video that has a large size but at the same time its data flow is scarce, we will be facing a material of very poor quality.
In this sense, we can cite as an example the DVD of 720 x 576 resolution and approximately 8 Mb / s, in comparison with a Bluray of 3840 × 2160 and 50 Mb / s, where without any doubt the second example will give us a much higher image quality, but with a greater effort on the part of the computer to reproduce it.
Let us bear in mind that in the case cited for comparison, although in one of them the screen size is larger, the truth is that its bandwidth is scarce, since this data stores the information regarding luminance and color of the video. Therefore, when the data flow is poor, the computer must group a large number of pixels that contain the same information, generating redundancy that directly affects the quality of the video.
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As a side note, it is important to mention that we should not distinguish between KByte (KB) and Kbit (Kb), since every 8 bits we have one byte.
Conclution
As we could see in the article, the bitrate affects practically all the tasks that we undertake with our PC, tablet, smartphone or any other device, and we hope that it has been useful to understand a little better the wonderful world of the computing.
