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Digital Video

Digital Video. Digital Video. Representing video. An array of images Movie = video + audio. How big is a movie. Frames (pictures) per second 32 FPS faster than human eyes 24 FPS - OK 10 FPS - a little jerky How big is a frame This screen 1024x768 TV - 640 x 480. How big?.

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Digital Video

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  1. Digital Video

  2. Digital Video

  3. Representing video • An array of images • Movie = video + audio

  4. How big is a movie • Frames (pictures) per second • 32 FPS faster than human eyes • 24 FPS - OK • 10 FPS - a little jerky • How big is a frame • This screen 1024x768 • TV - 640 x 480

  5. How big? • 640 x 480 x 10 minutes • 307,200 x 600 sec x 32 fps • 5.9 billion pixels x 3 (RGB) • 17 billion pixels • Audio - 48000 x 10 min x 60 sec/min x 2 • 58 million bytes • Compression (reduce the size)

  6. Video Standards • NTSC - American Television • Mostly black and white with a little color added • 460x360 • VHS - video tapes • Cheat a lot on the color • 300x360 • DVD - 720x480 • HDTV - High definition TV • 1920x1080

  7. Video Standards • Digital video • MPEG • Quicktime • AVI • PAL - European standard • More lines, better color

  8. Basic video editing in Premiere • Project • A collection of clips and cuts of audio and video • Import • Bringing in clips • Tools • Timeline • Select • Razor • Export Timeline • Generate an edited movie

  9. Starting Premiere • Select the resolution and rate for your work

  10. Monitor where you watch Project where clips are collected Tools Timeline Pieces of Premiere

  11. Import • Bringing clips into the project • Movie clips • Audio files (from CoolEdit or elsewhere)

  12. Creating a movie • Drag clips onto the Timeline • DEMO

  13. Editing • Razor tool • Cuts clips into two pieces so that each can be used independently • Select • Select and moves a clip • Delete key • Removes clips from the time line

  14. DEMO

  15. Timeline • How does the timeline relate to the video and audio array? • Each point on the timeline corresponds to an index in each of the arrays • Not necessarily the same index

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