Video Streaming is quite ubiquitous in the present day. With the aggressive advancement of internet speed over the globe, the demand for watching videos on the interest has risen up many folds. To observe it, you don’t need to read stat reports, Simply notice the behavior of folks around you.
Youtube, Vimeo, Dailymotion, and Facebook are the top examples of it. Whether we want to watch the latest news video or funny videos for boredom, it has become our second nature to pick up our smart-phones and visit video streaming websites.
Moreover, live tv channels are adopting this trend and instead of broadcasting their transmission through separate cable wire, They have started moving their services through the internet.
Video Streaming has really changed the way we get entertained and it influenced our behaviors too. It brought entertainment to our hands and we can access it in a matter of seconds with even our smart-phone wherever in the world we live.
But did you ever wondered how all this happens? In order to understand the process of video streaming, you need to educate yourself with encoding, decoding, and transcoding. In this guide, we will explain what actually happens under the hood when you watch video streaming on the internet. Without further ado, let’s dive in.
Video Encoding involves a process in which the raw information from an input device like a mobile camera, webcam, or any other is converted to a digital format so it can be accessed later. For instance, When you are recording a video on a smart-phone and after recording it you save it on your mobile gallery, the encoding process is in action under the hood.
Moreover, The digital file created with the process of encoding has all the information regarding the video. It has video details like resolution, frames per second, compression ratio, and meta-details. Various devices use a different set of settings for encoding their raw videos. Most video recorders have the capability for capturing video at 4K resolution while the other uses full-HD resolution.
These sets of settings including the compression ratio are known as codecs. The most popular codec is H.264 and widely popular among video streaming due to its high-quality video quality and efficient compression.
Video Transcoding is a process that involves decoding the video, making changes to its attributes like resolution change, or putting a logo watermark on it. And in the final step encoding the file in the digital format again for accessing it later.
Commonly, Video Transcoding is used for altering the video. For example, if the video has 4k resolution but the device where you want to watch the video does not support such type of resolution, you need to transcode video to a lower resolution so the video can be watched.
We will discuss more applications of video transcoding in our next article.