File Formats and Compression

GCSE Computer Science: ​File Formats and Compression

This module contains:

  • An editable PowerPoint lesson presentation
  • Editable revision handouts
  • A glossary which covers the key terminologies of the module
  • Topic mindmaps for visualising the key concepts
  • Printable flashcards to help students engage active recall
  • A quiz with answer key to test knowledge and understanding of the module
Compatible with the following examination boards
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​File Formats and Compression

File handling is one of the primary functions of a computer system. Based on the type of data that needs to be stored, several types of file formats are available. Each file format occupies certain storage space. An image file with good quality occupies around 1 MB and a video file needs to store 25 frames per second occupying large storage space. Thus, compression methods are used to reduce the size of the files. Compression is also helpful in reducing the download time of image, audio and video from the internet. In this chapter, different types of files formats and compression methods are explained.

This GCSE Computer Science module introduces ​​file ​formats and ​compression to your students, explaining:

  • ​Compressing Image files
  • Streaming audio and video files
  • Videos
  • Codecs and Compression Algorithms

More ​Data Representation Modules

​File Formats and Compression is one lesson in our ​Data Representation module. The other ​​data ​representation lessons can be found below: