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Graphics and Video File Types, Uses and Attributes Please take notes!

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Picture/Drawing File Types There are two main ways computers handle and create images. There are two main ways computers handle and create images. The first are the bit-mapped file types. The first are the bit-mapped file types. Programs using this type include: Photoshop Windows Paint Painter Classic Photo Editor

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File Formats - Bit Mapped.jpg.jpg.tif.tif.bmp.bmp.png.png.raw.raw.gif.gif And many others And many others

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Bit-Mapped Bit mapped images tend to be large files. Bit mapped images tend to be large files. Many types are not good for use on the Internet because of their size. Many types are not good for use on the Internet because of their size. Compression can be used to reduce the file size of the image. Compression can be used to reduce the file size of the image. Examples:.tiff, jpg, gif Some compression schemes lose noticeable amounts of quality. Some compression schemes lose noticeable amounts of quality.

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Vector-Based Graphics Vector-based graphics are based upon mathematical formulas. Vector-based graphics are based upon mathematical formulas. These scale very well. Some printers such as post-script printers use vector-based images to create fonts. CAD programs are vector-based. Vector-Based images do well with line drawings, but do poorly with photo- realistic images

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Vector-Based Programs All CAD Programs All CAD Programs Freehand Freehand Adobe Illustrator Adobe Illustrator Corel Draw Corel Draw Appleworks Draw Appleworks Draw Google SketchUp Google SketchUp

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Vector-Based File Types.eps.eps.swf.swf.ai.ai.cdr.cdr.dwg.dwg

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Some Graphic File Types.bmp.bmp Huge file size. Image broken down into pixels. Used for wallpaper, etc. in Windows.tif.tif High quality large file size, even when compressed. Used for printing.

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Graphics files.jpg.jpg Used for the Internet. Heavily compressed. Looks okay on-screen. Not so good for printing..gif.gif Used for the Internet. Very heavily compressed. Limited color depth. Can support transparent color and limited animation.

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Graphics files When you compress a file and overwrite it you lose detail that cannot be restored. When you compress a file and overwrite it you lose detail that cannot be restored. A 5kb.jpg balloons to 250kb when saved as a bit map with no increase in image quality. A 5kb.jpg balloons to 250kb when saved as a bit map with no increase in image quality.

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Graphics Files Always keep in mind your end use when selecting a file type. Always keep in mind your end use when selecting a file type. Use graphics programs to translate from one file-type to another by doing a Save As. Use graphics programs to translate from one file-type to another by doing a Save As.

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Video files Video files by their nature are rather large. Video files by their nature are rather large. .avi offers best quality At full resolution count on 1.5 gig/minute Files can be compressed into one of several file types. Each has its own advantages/disadvantages

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Video Files Major file types Major file types .avi .mpg (mp1, mp2, mp3, mp4) .wma .divix HCL (HD file type from Sony) HDV Quicktime

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Video Files Streaming vs. Downloadable Streaming vs. Downloadable Streaming can be viewed but cannot be saved without special software. Downloadable files take a great deal of time to copy. .wma file types support both.

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Streaming Video files Realplayer files are strictly streaming. Realplayer files are strictly streaming. Windows Media Player files can be either. It comes in both flavors. Windows Media Player files can be either. It comes in both flavors. Flash and Shockwave are strictly streaming. Flash and Shockwave are strictly streaming.

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Non-Streaming Video Files These copy to your hard drive before playing: These copy to your hard drive before playing: .avi Used for full-resolution applications such as editing. Can be used in PowerPoint. .mpg Used for compressed video. Has many variations. Can be edited but it is not recommended. .wma Windows Media Player. Can be used in PowerPoint. Offers different compression levels.

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Video Files DIVIX DIVIX Often used for movies Files highly compressed Students like these files Player software used to be free and widely available. Now most charge. Runs on Laptops and portable devices

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Video Files.VOB Used for DVDs - Video object file..VOB Used for DVDs - Video object file. Special players can be used to play this file type such as WinDVD. Special players can be used to play this file type such as WinDVD. These files can also be edited. These files can also be edited.

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High Definition Video There are video formats that were created specifically for HD. There are video formats that were created specifically for HD. HCL HDV Others have been adapted for HD Others have been adapted for HD AVI MP4/Quicktime

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High Definition Video Special software may be needed to reduce HD footage to SD. Special software may be needed to reduce HD footage to SD. Some editing software may reduce the image quality to fit on a standard DVD disc, but the format remains in HD. Some editing software may reduce the image quality to fit on a standard DVD disc, but the format remains in HD. This may cause compatability issues. HD DVDs are Blu-Ray. HD DVDs are Blu-Ray.

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Next Class We will have a worksheet about graphics and video files. We will have a worksheet about graphics and video files. You may use your notes from today and the Internet. You may use your notes from today and the Internet.