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

Creative Media Pre-production Learning outcome 1

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

Creative Media Pre-production What is compression?

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

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.

Creative Media Pre-production

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?

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

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.

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?

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

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

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

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.

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.

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?

Creative Media Pre-production

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.

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

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.

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?

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

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