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Let’s Stream! Using iMovie 2 An overview of video for streaming for the Internet
Workshop Agenda Video in instruction Tools and tips for streaming video Overview of iMovie 2 Hands-on with iMovie 2 Importing Editing and enhancing Exporting (video and computer files)
Two thoughts on video… As part of the curriculum As an assignment within a curriculum
As a part of the curriculum When you are not in class Interesting topics Distance learning
About using video on the web… Be aware of your audience! Bandwidth/connection speed? Processor speed? RAM? OS/browser/plug-ins?
As an assignment within the curriculum Another form of expression Engages students’ attention in content Useful technical skill
An example… http://www.apple.com/education/dv/gallery/mov2.html
Finished video formats Video tapes Video files CD or DVD In multimedia production PowerPoint Hyperstudio On a webpage
Equipment needed Video camera Digital 8 Mini DV
Equipment needed Video tapes Tripod
Equipment needed FireWire cable iMac with iMovie
How do you stream? Take the best possible video and audio! Use a tripod Less pans and zooms the better Use an external microphone Lighting is good
How do you stream?
Bandwidth codec Info
How do you stream? Bandwidth Info
Codec Compression-Decompression Makes video/audio files smaller so easier to transmit over the Internet Macs and PCs do not have the same default codecs
Example – video footage H.263 compression, 12 fps, Keyframe rate = 99 No audio compression 240 x 180 pixels QT file = 108 KB, AVI file = 697 KB 5:17 seconds = 167 frames (or 167 individual pictures)
Possible compression Multiple pictures that represent changes
Codecs apply to… Bandwidth Images Sound Images Sound images sound
Streaming codecs As recommended by QuickTime for the Web
Audio Codecs Qualcomm PureVoice QDesign Music
Video Codecs Photo JPEG Motion JPEG Sorenson Video H.263
iMovie’s preset codec options Email Movie, small Web Movie, small Streaming Web Movie, small CD-ROM Movie, medium Full Quality, large Expert – you set both video and audio
Is this a good video clip?
What was wrong? Background movements Bad zooms Horrible picture and sound quality Distracting transitions Small titles
How to improve it? Subtle background Portrait mode on video camera Use a tripod Stills are great! Zoom in from beginning or pan very slowly Slow down pan in iMovie
How to improve it? Get quality video and audio from the start Better to degrade than try to improve Good lighting Use transitions sparingly Remember change is bad! Large titles
Let’s get started! Using iMovie 2
iMovie’s Components 1 2 3 Viewer Bookshelf Timeline
iMovie’s Components Eyeball view Clock view
Answers Pans and Zooms Large Titles iMovie 2
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