LO3 - Lesson 7 - File Formats
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The document discusses different file formats for images, audio, and video. It describes the properties and limitations of various image file formats like JPEG, GIF, and PNG. These file formats differ in features like color depth, compression levels, and file size. The document also explains the concepts of compressed and uncompressed files as well as lossy and lossless compression techniques used to reduce file sizes.
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For example, a multimedia format may allow text to be stored as PostScript or Rich Text Format (RTF) data rather than in conventional ASCII plain-text format. Still-image bitmap data may be stored as BMP or TIFF files rather than as raw bitmaps. Similarly, audio, video, and animation data can be stored using industry-recognized formats specified as being supported by that multimedia file format.
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File format
Digital media comes in different file formats for images, audio, and video depending on the device and how the file will be used. Common file formats include JPEG, GIF, PNG for images and MP3, WAV, and AAC for audio. Video file formats include AVI, MP4, and MOV. File formats can vary in properties like file size, quality, resolution, and whether they are compressed or uncompressed. Compression reduces file sizes but also lowers quality, while uncompressed files are highest quality but largest in size. The appropriate file format depends on balancing quality needs with file size and device compatibility.
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This document discusses digital media compression. It aims to help readers understand compression techniques, specifically lossy versus lossless compression. Lossy compression permanently eliminates some data to greatly reduce file sizes, while lossless compression uses formulas to compress files without losing any quality upon decompression. Examples show lossy compression can shrink files more than lossless compression, though quality is reduced. The document seeks to explain these concepts and differences between uncompressed, compressed, lossy, and lossless files and compression techniques.
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This document discusses digital image software and file formats. It aims to help students understand the key capabilities and limitations of various image editing software, and know different image file formats and their properties. Some key points covered include:
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This document discusses digital video editing. It covers identifying the capabilities and limitations of video editing software as well as understanding different video file formats. Regarding software, it notes common tools like cutting clips, adding effects and transitions. It asks the learner to describe capabilities and limitations of software like Adobe Premiere and Windows Movie Maker. For file formats, it discusses characteristics like file size, quality and compression for formats used on different viewing platforms. The learner is tasked with outlining properties and compression of formats like MP4 and OGG. The overall goal is for the learner to understand features of video editing and properties of file types.
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This lesson covers digital audio media, including identifying the capabilities and limitations of various audio software and understanding different audio file formats and their properties. It discusses common audio editing software such as Audacity, Pro Tools, and GarageBand and their typical capabilities, like cutting, copying, and pasting audio, adding effects, and recording. The lesson also examines audio file formats like MP3, WAV, and WMA, how they vary in size, quality, and compression, and which formats are best for different devices. Students are asked to research and summarize specific audio software and file formats based on their characteristics, capabilities, limitations, and compression levels.
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This document provides information on different types of digital graphics file formats including raster graphics (made up of pixels), vector graphics (made up of paths and strokes) and the key differences between the two. It then outlines several specific file formats for raster (JPEG, TIFF, GIF, BMP) and vector (PSD, AI, FLA, WMF) graphics and provides details on what each is used for, advantages and disadvantages. The document also discusses topics like compression, image capture methods, optimizing images, file size considerations, naming conventions and asset management.
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This document provides information on different types of digital graphics file formats including raster graphics like JPEG, TIFF, GIF and BMP as well as vector graphics like PSD, AI, FLA and WMF. It explains the key differences between raster and vector graphics, when each format type would be used, advantages and disadvantages of each format. It also discusses topics like compression, image capture methods, file optimizing, factors that influence file size, and best practices for file naming and asset management.
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File format, compression techniques, image resolution, and color depth all impact file size and image quality. Different file formats like BMP, GIF, JPEG, TIFF, and PSD are used for different purposes and affect file size. Compression techniques like lossless and lossy compression reduce file size but can degrade image quality for lossy compression. Image resolution determines detail and quality, while higher resolution means larger file sizes. Color depth also controls file size and quality, as more colors increase size. These factors must be considered to balance image quality with optimal file size.
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This document discusses different types of digital file formats for graphics. It covers raster graphics, which are made up of pixels and lose quality when scaled, and vector graphics which are paths and curves that can be scaled without quality loss. Specific file formats are then outlined, including JPEG, TIFF, GIF, BMP, PSD, AI and more. Details are provided on what each format is used for, advantages, and disadvantages. The document also discusses compression, image capture methods, optimizing files, file sizes, naming conventions, and asset management.
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This lesson teaches how to check digital media file properties and test files against requirements. Students will learn to check a file's type, size, length and other properties by viewing its properties details. They will also create a testing table to check that their audio, image and video files meet requirements for file type, size, length, pixels and other specs. Screenshots of file properties will be produced to identify key features and show the files meet requirements.
File types pro forma(1)
Raster graphics are made up of pixels while vector graphics use paths and strokes. Common raster file formats include JPEG, TIFF, GIF, BMP while vector formats include AI, FLA, and WMF. File sizes can be optimized through compression, reducing image size and resolution. Assets for games should be clearly named and organized in a folder structure to help manage large projects.
File types pro forma(1)
Raster graphics are made up of pixels while vector graphics use paths and strokes. Common raster file formats include JPEG, TIFF, GIF, BMP while vector formats include AI, FLA and WMF. File sizes can be optimized by compressing files through reducing image size, resolution and bit depth. Assets should be organized, accurately named and stored in folders to help manage large projects.
File types pro forma(1)
Raster graphics are made up of pixels while vector graphics use paths and strokes. Common raster file formats include JPEG, TIFF, GIF, BMP while vector formats include AI, FLA and WMF. File sizes can be optimized by compressing files through techniques like reducing image size and bit depth. Assets should be organized, named accurately and stored in folders to help manage large projects.
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The document discusses various digital file formats including raster graphics (JPEG, TIFF, GIF, BMP), vector graphics (PSD, AI, FLA, WMF), and methods for capturing and optimizing graphics. JPEG is used to compress photos, TIFF maintains quality on edits, GIF uses 256 colors for animations, and BMP displays accurate color. PSD preserves Photoshop layers, AI is a vector format, FLA is for Flash movies, and WMF works on Windows. Compression reduces file sizes for storage and transfer while optimization improves loading speed online. Factors like bit depth, scaling, and file naming impact file sizes and organization.
Digital graphics pro forma
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This document summarizes several common file formats for images and graphics, including their purposes, advantages, and disadvantages. JPEG is a commonly used format for sharing photos on the internet due to its small file size, though it is "lossy" and image quality degrades each time it is saved. TIFF files have higher quality than JPEGs since they are lossless, but take up more storage. PNGs are also lossless and useful for images with clipped backgrounds. GIFs are best for small animations due to their highly compressed file size but have low quality. RAW files store the full, unprocessed image data from a camera sensor but take up more space. PSD files support layers and editing in Photoshop
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This document discusses different types of digital graphics file formats, including raster graphics, vector graphics, and common file formats like JPEG, PNG, GIF, TIFF, and others. It provides definitions and comparisons of raster vs vector graphics, describes common graphics file formats and their uses, advantages and disadvantages. It also covers topics like image capture, file optimization, file size management, naming conventions, and asset organization.
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The document discusses different types of digital graphics file formats including raster graphics, vector graphics, and various file format types for both raster and vector graphics. It provides definitions and examples of uses for common file formats like JPEG, TIFF, GIF, BMP, PSD, AI, FLA, and WMF. It also covers topics like compression, image capture methods, optimizing files, file size considerations, naming conventions, and asset management.
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This document provides information on different types of digital graphics file formats, including raster graphics (made up of pixels and bitmaps), vector graphics (created using geometric shapes defined by mathematical expressions), and various file format types for both raster and vector graphics. It discusses common file formats like JPEG, TIFF, GIF, BMP, PSD, AI, FLA, and WMF and provides details on their uses, advantages, and disadvantages. The document also covers topics like raster graphics file capture and optimization, file compression, file sizing, and asset management best practices.
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- 2. Lesson Goals Know file formats used for images, audio and video Understand the use of file compression techniques Be able to describe properties and limitations of file formats #limitation #property
- 3. Viewing Digital Media What devices can we use to view digital media files?
- 4. Digital Media Know image, audio and video files Be able to describe file formats Because there are so many different platforms which we can view images, video and audio we need different file formats depending on the device: #limitation #property
- 5. Digital Media Know image, audio and video files Be able to describe file formats Digital media devices are required to be able to play back the following: There are various different types of audio, image and video file and each one is used for a specific reason or type of job. These different files will also vary in their quality, file size and the way that the file is compressed. #limitation #property
- 6. Image File Formats Watch the video and identify the good and bad features of five image file types: GIF PNG EPS
- 7. File Type EPS Not good for sharp edges Not great for text Some colour detail is lost when compressed Features millions colours No colours are lost No or little compression PNG Bad Points Zooming in is good quality Millions of colours Compresses well GIF Good Points Not compatiable with all applications Large file sizes Compresses well Very small file size Only has 256 colours Doesn't show all colours Millions of colours Compresess well Sharp edges Not compatiable with all applications Can only use in a few particular places Doesn't lose colour or detail Scalable to any size Does not lose any colour quality Can only open in certain software
- 8. Image Formats Know image, audio and video files Be able to describe file formats Different image file formats are used depending on the way in which you want to use or display the image files but the quality varies greatly: JPEG GIF #limitation #property
- 9. What is compression? Think of what the keyword may actually stand for…
- 10. Compression Know image, audio and video files Be able to describe file formats Digital media files can be either uncompressed or compressed: 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. #limitation #property
- 11. Compression Know image, audio and video files Be able to describe file formats There are two main methods for compressing files: This technique uses a formula which doesn’t lose any of the original data so the quality of lossless compression files is good. Lossy This technique gets rid of any data it thinks is unnecessary. File sizes are much smaller but the quality is poor compared to lossless. #limitation #property
- 12. Your Task Know image, audio and video files Be able to describe file formats Create a table showing properties and limitations of each image file: Big or small file size? Common file or not? Where is it used? State if the file is compressed or uncompressed. File Properties Limitations Compression #limitation #property
- 13. Key Words File Format The standard way that a digital media file is stored on a computer Properties Features of the file format such as the size and quality of the file Limitations Something that is a restriction on what you are doing or want to do Compression Making a file smaller for broadcast on different platforms
Editor's Notes
- Video Source: http://www.youtube.com/watch?v=maqbhJx3H4E