1. Creative Media
Pre-production
Introduction
Creative Media GCSE
Mr Tench
Mr Crawford

2. Creative Media
Pre-production
Learning outcome 1

3. Understand the different methods of compression
Creative Media
Pre-production
Title - Compression
Understand the different methods of compression
Be aware of the consequences of use of different compression methods

4. Creative Media
Pre-production
What is compression?

5. Creative Media
Pre-production
What is compression?
Compression is when a file on a computer is reduced from its original size.

6. Creative Media
Pre-production
Uncompressed
This is the original file which is at the best quality it could ever be. These files are usually used just for storage because they have massive file sizes.
Compressed
This is a file that has been made smaller to store on things like portable devices. They are poorer quality than uncompressed files but have a much smaller file size.

7. Creative Media
Pre-production

8. Creative Media
Pre-production
Task 1
Why is it a good idea to compress video and audio files that you are saving to a mobile phone?

9. Be aware of the different file formats for images, videos and audio
Creative Media
Pre-production
Title – File Formats
Be aware of the different file formats for images, videos and audio
Be able to select the correct file format for a given situation

10. Every digital file you store on a device has a file format.
Creative Media
Pre-production
Every digital file you store on a device has a file format.
When you see an extension on the end of a document (like .JPEG) this represents the type of file it is.

11. How many different file formats can you fit into this table?
Creative Media
Pre-production
Task 1
How many different file formats can you fit into this table?

12. Creative Media Pre-production Kind of file Common file extensions
Images
Videos
Audio files

13. Creative Media Pre-production Kind of file Common file extensions
Images
JPEG, GIF, BMP, PNG, TIFF
Videos
AVI, MPEG, WMV
Audio files
MP3, WMP, WAV

14. Creative Media
Pre-production
Title - File Formats
The reason we have different formats for the same file type is because they have different properties, meaning they are useful in different situations

15. Creative Media
Pre-production
Title - File Formats
The file types vary in quality, the way they are compressed and file size.
Different file types will be more appropriate for different devices and different situations.

16. The more colours a file has, the better the quality will be.
Creative Media
Pre-production
Title - File Formats
If a file is compressed this means it will lose quality when blown up to a bigger size.
The more colours a file has, the better the quality will be.

17. Creative Media
Pre-production
Task 2
You are designing a billboard to be displayed in the city centre. Which would be the best option from the following list and why?

18. Creative Media
Pre-production

19. Creative Media
Pre-production
Task 3
You are going to use the billboard image as a small advert on your website. Which type of file might be appropriate from the list? Justify your choice.

20. There are also a number of different audio files…..
Creative Media
Pre-production
Audio Files
There are also a number of different audio files…..

21. Creative Media
Pre-production
Audio Files
WAV and WMA files have by far the highest quality and largest file sizes. MP3s are compressed down, with some loss of quality from the original file.

22. When might it be appropriate to use a high quality music file?
Creative Media
Pre-production
Audio Files
When might it be appropriate to use a high quality music file?

23. Creative Media
Pre-production
When downloading audio from the internet, the most common format is MP3. Why do you think this is?

24. Creative Media Pre-production HD1080P -Best quality available
-Uncompressed
-Extremely large files