What is Video Compression?

Hello Everyone,

Its Josh here from Loveridge Digital, this week on “Getting into it with Loveridge Digital” we are going to cover what video compression is?

Video compression is the process of encoding a video file in such a way that it consumes less space than the original file and is easier to transmit over the network/Internet.

Video compression is performed through a video codec that works on one or more compression algorithms. Usually, video compression is done by removing repetitive images, sounds and scenes from a video. For example, a video may have the same background, image or sound played several times throughout or the data displayed within the video file is not that important. Video compression will remove all such data to reduce the video file size.
Once a video is compressed, its original format is changed into a different format (depending on the codec used). The video player must also support that video format or be integrated with the compressing codec to play the video file.

The 5 most common compression techniques are as follows

  1. Image resizing
  2. Interframing
  3. Chroma subsampling
  4. Altering frame rates
  5. Interlacing

Some of the above techniques may leave items called artifacts within the compressed file, A common example of this is called “Pixelation” or “Color Banding”, These phenomenon occur when a video file is too heavily compressed.

While video compression may not seem like the most important topic in the world, many online platforms have stipulations on how big a file can be on their servers which is why a basic understanding of what compression is and does is essential

Thank you very much for taking the time to watch the video, I hope you found it informative and engaging, until next time.

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