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Video Prototyping in HCI

Video Prototyping in HCI. Outline. Why prototype? Tools & Techniques. What is a video prototype?. shows your System in Context Big budget not required. System. from flickr: dan gavie. A paper prototype. System. A paper prototype A physical prototype. System. A paper prototype

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Video Prototyping in HCI

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  1. Video Prototyping in HCI

  2. Outline Why prototype? Tools & Techniques

  3. What is a video prototype? shows your System in Context Big budget not required

  4. System from flickr: dan gavie A paper prototype

  5. System A paper prototype A physical prototype

  6. System A paper prototype A physical prototype An on-screen mockup

  7. Context Who (is the user)? What (are they doing)? When (in their day does this fit in?) Where (are they sitting/standing/working/ playing)? How (is your system helping them with their task)?

  8. Tradeoffs

  9. In other words...

  10. But... You should budget ~1 hour per minute of video It’s easy to fiddle for a long time

  11. Some Tips - How to light from http://www.exposure.co.uk/eejit/light/

  12. How to light • Fill lighting • Bounce off a surface (softens shadows) • Key lighting • Main light, shine at angle on subject • Back lighting • Optional, especially for video prototypes (helps separate from background)

  13. Short version for you Light more than you think you need Use a room lamp to either shine on subject, or bounce off a white surface to help fill in shadows

  14. Audio • If possible, use an external microphone • Avoid tape noise! • Get closer to your subject • Audio is make-or-break for communicative power

  15. Which software? (Mac) • iMovie ’06 • Doesn’t support some newer video formats • Has some initial learning cost • But is really easy and relatively powerful • Just one video track + some overlays • iMovie ’08 • Slicker, but lacks some basic features • Better video format support • Final Cut Express • Very powerful, non-linear, multi-track editing • Not easy to jump into

  16. Which software? (Windows) • Windows Movie Maker • Highly frustrating (but reportedly better in latest version) • Adobe Premiere Pro • Powerful, but again, learning curve

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