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Video1 history concepts

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Video1 history concepts

  1. 1. History Key Concepts Tips on Shooting and Capturing Videos Video Production Process
  2. 2.    Explain some key concepts in video. Enumerate and describe some tips in creating good videos. Discuss the steps or processes involved in a video production.
  3. 3. A bit of history…
  4. 4.  Thomas Edison (US): kinetograph – motion picture camera kinetoscope - peephole viewer
  5. 5.  The June 1894 Leonard–Cushing bout. Each of the six one-minute rounds recorded by the Kinetograph was made available to exhibitors for $22.50.
  6. 6.  Lumiere Brothers (FR) cinématographe— apparatus that took, printed, and projected film
  7. 7. Key concepts
  8. 8.  Motion Picture History SLR Video FPS Frames per Second.flv
  9. 9.  24 fps
  10. 10.  Frames vs Fields   Frame = 1 complete picture Field = ½ frame in interlaced scanning
  11. 11.  Scanning: interlaced vs progressive scans
  12. 12.  Interlaced Scanning—scans the display twice, using two fields, to complete a single frame   Invented to improve quality of a video without increasing bandwidth Used for CRT televisions
  13. 13.  Progressive scanning—each line is scanned consecutively until a complete frame is drawn   Results in a faster refresh rate Used in LCD monitors
  14. 14.   Refresh Rates = ―vertical refresh rate‖ = no of times in a second that the display hardware draws the data Timer used = oscillation of alternating current (AC)
  15. 15.  Describes the proportional relationship between an image’s width and height
  16. 16.  PAL/SECAM (Phase Alternating Line/Séquentiel Couleur àvec Mémoire)     625 scanlines 25fps or 50 fields/sec, interlaced 50Hz NTSC (National Television System Committee) 525 scanlines  29.97fps or 59.94 fields/sec, interlaced  60Hz 
  17. 17.      VCD: 352x240 (NTSC)/352x288 (PAL), 4:3 SVCD: 480x480 (NTSC)/480/576 (PAL), 4:3 DVD: 720x480 (NTSC)/720x576 (PAL), 4:3 or 16:9 720p HDTV, Blu-ray: 1280x720, 16:9 1080p/1080i HDTV, Blu-ray: 1920x1080, 16:9 or 16:10
  18. 18.  Lossless: allows the exact original data to be reconstructed from the compressed data (e.g., Zip) and then decompressing it retrieves data that may well be different from the original, but is close enough to be useful in some way (e.g., iPod video format)
  19. 19.   ―Co-dec‖ = compression-decompression Standards Organizations:   Moving Pictures Experts Group (MPEG) Telecommunications Standardization Sector (ITU-T) under International Telecommunications Union (ITU)
  20. 20.     MPEG-1: used in Video CDs (VCDs) MPEG-2: DVDs, SVCD MPEG-4 (part 2): internet, broadcast, etc. MPEG-4 (part 10): Blu-ray, PSP, iPod, XBOX360  Often referred to as MPEG-4 AVC (Advanced Video Coding)
  21. 21.   H.261/H.263: used in videoconferencing and videotelephony, internet video H.264: aligned with MPEG-4 AVC
  22. 22.     WMV: Microsoft’s family of codec designs RealVideo: RealNetworks Cinepak: early codec from Apple Quicktime DivX, Xvid, FFmpeg: different implementations of MPEG-4 (part 2)
  23. 23. Preproduction Production Postproduction
  24. 24.  Pre-production: Conceptualization: aim, style/format, key message, target audience  Storyboarding: good to include camera shot styles (pans, zooms, wide/close-up, etc.)  Study shooting locations  search for available raw footage/clips/graphics/sound etc., permits?  Screen/select talents, crew  Create a working production schedule   Where, when, who
  25. 25.  Production     On-location or studio shooting Design/creation of graphics, animation, etc. Recording of narration Selection/creation of music
  26. 26.  Post-production  Prepare video/audio for editing: linear vs nonlinear  Select video segments  Editing  audio: narration, music, sound effects  Video  Motion graphics  Animations  Text  Transitions, special effects  Final editing, mixing, and mastering

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