Kinds of video formats

 

The vidéo formats, types, and qualité Levels varie accordina to the type of vidéo and encoding system, as well as the display quality settings, and include the video container, video and audio codecs, codec, file resolution, image resolution, Aspect ratio, and the number of frames per second F / S or fps, System scan, bit rate.

 

Digital video files are divided into several types, according to the resolution and clarity of the image, and the clarity depends on the number of points that make up the image, "Pixel". One of the factors affecting video quality is the number of consecutive frames per second (Frames per Second = F / S or fps). Another factor affecting video quality is: Interlace.

 

The second type has improved clarity of ED, which is the same as the previous type measurements, but it is an improved scanning system and symbolized by the symbol p, and the second type is high-quality HD and measured at a value of 720 vertical pixels or 1080 vertical, which is the latest and better system than previous systems and is common in modern screens and TVs as well as cameras And broadcast systems, and the fourth system Ultra HD, which are systems with greater accuracy dedicated to cinemas and measured by 2160 and also called 4K UHD - and also measured by 4320p also called 8K UHD.

 

Sometimes you may see black stripes or green squares while watching the video, you lose your senses, and this is due to poor networking, as well as there is an Aspect ratio, which is related to the size of the clip, small or large, whether it is 4/3 or 16/9, and finally the colors: Color space and bits per pixel

So the factors involved in video quality are:

Resolution, which depends on the number of pixels

Frames per Second, whose number is directly proportional to the number of points, Pixel

Interlace, which is called interlacing

Aspect ratio, which determines the dimensions of the clip

Color space and bits per pixel, which has a big role in clarity as well as its storage space

 

Each extension has a specific way of making it, and therefore there is a certain way to read it, which made some extensions specific programs for reading them, and this is called codec.

 

Now, let's get to know the meanings of some of the most popular video extensions:

 

 AVI: (Audio Video Interleave)

Created by Microsoft Corporation, and it is characterized by the fragmentation of image and sound data, which makes it easy to compress it, that is, to convert it into a file with a smaller size. This type of file can be read using many programs, including Windows Media Player.

 

WMV: (Windows Media Video)

Also affiliated with Microsoft, and it was invented specifically to be displayed directly on the Internet, or so-called Streaming. To read this type of file you use Windows Media Player.

 MOV: (Quicktime Movie)

Created by Apple, it is characterized by its convenience for streaming data and compatibility with its pages. You can find cameras that save the video you take with this extension, such as some Kodak devices, to save you time if you want to include them for Internet pages. To read this type of file you use Quick Time.

 

FLV: (Flash video)

This type of file is used to display videos on webpages, such as YouTube. These files can be played on a computer directly after being loaded using various programs such as FLV Player or VLC.

 3GP: (3rd Generation Partnership Project)

This is a type of compressed video file that is used on mobile phones. It is characterized by lower size and lower quality as well. It is available in either 3GP or 3G2 format.

 

Vob: Video Object File

They are included in the DVD-type discs and feature as well as subtitles. It is also characterized by high quality. It is read using VLC Player.

 

MP4: (MPEG-4)

High quality video and audio compression format, widely used in the Internet as well as mobile phones, television and video games.