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Understanding Digital Video: Frames, Standards, and Basic Editing Techniques

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Explore the fundamentals of digital video, including frame rates, video standards, and basic editing techniques in Premiere. Learn how frame rates like 24 FPS and 32 FPS affect playback, the significance of resolutions such as 1024x768 and 1920x1080, and discover the various video formats including MPEG, AVI, and PAL. Understand the importance of audio in video files and how compression reduces file size. Get a step-by-step guide on starting a project in Premiere, importing clips, and editing them on the timeline using tools like the razor tool and delete key.

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Understanding Digital Video: Frames, Standards, and Basic Editing Techniques

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Presentation Transcript

  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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