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Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
Digital Cre8or Unit D Lesson 1
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Digital Cre8or Unit D Lesson 1

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Lesson 1 - Introduction to Digital Video …

Lesson 1 - Introduction to Digital Video

This first lesson of Unit D (Digital Video) covers the differences between digital and analogue video, the different ways of copying DV from one device to another, and things like frame rates, formats and aspect ratios.

This material is adapted from David Baugh's original course materials for Digital Cre8or.

Published in: Education, Technology
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  • 4 units total = 1/2 a GCSE
    opportunity to take other 4 units next year to make up full GCSE
    12/13 weeks total
  • 3 strikes and you’re out rule regarding Facebook, email, online games or anything other than the work you are on. Strict rule on this.
    Respect and tolerance - listen carefully when others are talking to whole class.


  • 1 = analogue v digital video, capturing digital video, different video formats
    2 = formulate ideas, storyboarding
    3 = take good footage
    4 = import footage to computer, organise clips, produce rough cut
    5 = fine edit sequence, add insert & cut away edits, titles, transitions, effects
    6 = adding audio, editing audio, exporting project


  • 1. differences between ‘digital’ and ‘analogue’ video
    2. how can get digital video from a camcorder to a computer for example?
    3. different ways of playing back DV on a computer e.g DVD software
    4. frame rate, aspect ratio
    6. examples of some short films

  • Analogue video such as a VHS tape or non-digital television is delivered by a constant stream of red, green and blue colour waves. Waves carry information regarding the luminance (brightness) and chrominance (colour) of the wave signals. Transferred via composite or S-Video. Stored on tape.

    Digital video works in a different way in that the image and audio are delivered by the use of binary computer code which essentially a series of 1s and 0s. Digital Video is essentially a series of digital images that are displayed one after the other as ‘frames’ at a constant rate e.g 30 frames per second.
  • Analogue video such as a VHS tape or non-digital television is delivered by a constant stream of red, green and blue colour waves. Waves carry information regarding the luminance (brightness) and chrominance (colour) of the wave signals. Transferred via composite or S-Video. Stored on tape.

    Digital video works in a different way in that the image and audio are delivered by the use of binary computer code which essentially a series of 1s and 0s. Digital Video is essentially a series of digital images that are displayed one after the other as ‘frames’ at a constant rate e.g 30 frames per second.



  • Digital Video is of much greater quality than analogue. More lines of information = better quality. Better quality audio too, since it is of CD or better quality.

    MiniDV = old-fashioned tape which stores a modern digital signal
  • VHS copies - each one of poorer quality than previous
    DV (e.g blu-ray or miniDV) - no image degradation, each copy is perfect. In practice after 30 or 40 copies, some dropout of frames may occur, depending on quality of media.
    Why? DV = computer code, perfect copies. VHS = analogue, magnetic pulses, degrades each time copy is made.
  • VHS copies - each one of poorer quality than previous
    DV (e.g blu-ray or miniDV) - no image degradation, each copy is perfect. In practice after 30 or 40 copies, some dropout of frames may occur, depending on quality of media.
    Why? DV = computer code, perfect copies. VHS = analogue, magnetic pulses, degrades each time copy is made.
  • VHS copies - each one of poorer quality than previous
    DV (e.g blu-ray or miniDV) - no image degradation, each copy is perfect. In practice after 30 or 40 copies, some dropout of frames may occur, depending on quality of media.
    Why? DV = computer code, perfect copies. VHS = analogue, magnetic pulses, degrades each time copy is made.
  • VHS copies - each one of poorer quality than previous
    DV (e.g blu-ray or miniDV) - no image degradation, each copy is perfect. In practice after 30 or 40 copies, some dropout of frames may occur, depending on quality of media.
    Why? DV = computer code, perfect copies. VHS = analogue, magnetic pulses, degrades each time copy is made.
  • Signal degrades faster on a VHS tape BUT technology is constantly changing, so for example some ways of storing computer data is now obsolete e.g zip disks, floppy drives. No guarantee that Blu-Ray will be around in 10 years time. Also Hard Drives (standard for HD video) fail, some in 2 or 3 years.
  • Major benefit of using digital video is that it makes editing video much easier using ‘non-linear editing’. Non-linear editing allows a user to edit video in a similar way that you would edit text in a word processor, using techniques such as copying, pasting and deleting to alter the appearance of the content. You can cut out the boring bits or bits not needed! It uses the principle of a timeline and ‘bins’ for cutting unwanted bits.
    Linear editing was done originally by cutting and splicing tape, and then later by machines that would edit the video in one long, linear sequence.
    A non-linear editing suite made by Avid in 1990 cost £20,000+ hardware etc.
    Now, anyone can edit good quality video using free tools such as iMovie or Windows Media Maker.


  • Show different cameras:

    - MiniDV (show tape)
    - Hard Drive (Canon)
    - Compact (Sanyo Xacti)
    - Digital Camera (Panasonic)
    - Mobile Phone (iPhone - demonstrate)

    Popularity of video on mobile phones and compact camcorders - quality vs always-available
  • Digital video can be captured by a variety of cameras onto different types of media.

  • Digital video can be stored in different formats in the same way as a text files can be stored on a computer. A computer, or other player, will need software to play these video files.
  • Digital Video is often compressed unless it is a DV Stream
    When video is compressed its frame rate and number of pixels is reduced.

  • Video is effectively a series of image frames that are shown to you in quick succession. The difference in quality is because the number of frames you see per second (frames per second - fps) is different for different files.

  • If you have played digital movies before you might have noticed that the movies open in different size windows. The size of window a digital video opens in is measured by its width and height expressed in pixels.
  • 4:3 format used in traditional TVs and computer monitors
    16:9 format = international standard of HDTV and widescreen TVs and many modern computer monitors.

  • Transcript

    • 1. Welcome to Digital Cre8or!
    • 2. My Details • Julian Prior • F34a Wed and Thurs • AF07 Mon, Tues, Fri • julian.prior@newcollege.ac.uk
    • 3. Course Overview Mondays 3.30-5.30 G46 Unit D - Digital Video (Julian Prior) Unit F - Sharing with Optical Media (Julian Prior) Tuesdays 10.30-12.30 G46 Unit C - Moving Image Language (Ron Morton) Unit A - Digital Audio (Julia Tucknott)
    • 4. Expectations 1. 1 Assignment each week + blog entry (6 for each unit) which should be finished during the lesson. If not it must be finished before the next class. 2. No food or drink allowed in room. 3. 15 min break during lesson - opportunity for food, drink, Facebook, online game etc. but only during the break. 4. Be prepared to work independently but ask for help when needed. 5. Work together co-operatively - listen & learn from each other (but no copying!). 6. Treat each other with respect - zero tolerance to any racism, sexism, homophobia or other forms of discrimination.
    • 5. Your Expectations In pairs write down your expectations of the course: • Your name • Why you have taken this course (be honest!) • What you would like to get out of the course (job skills? new friends? GCSE in digital creativity?) • Any experience you have with creating something digital (e.g photos, movies, songs/audio, DVD, blog etc. - describe this experience)
    • 6. Digital Video Unit D Lesson 1 - Introduction
    • 7. Unit Overview 1. Introduction to digital video technology 2. Plan a digital video project 3. Take effective digital video footage 4. Import footage, produce rough cut 5. Edit video using iMovie 6. Add audio and export project
    • 8. Your Task • Using your list of expectations create a 1 minute video introducing yourself and talking about what you hope to get from the course; • Include a title and a piece of audio from the sound library in iMovie; • When you have finished export (‘share’) your movie as an mp4 that can be played on an iPod/iPhone.
    • 9. Unit D - Digital Video Lesson 1 - Introducing Digital Video
    • 10. Lesson Objectives By the end of today’s lesson you should be able to: 1. Understand what ‘digital’ video (DV) is; 2. Explain how it can be copied from one device to another; 3. Explain how it can be played on a computer; 4. Understand and outline how one digital video can vary from another one in quality and appearance; 5. Complete Assignment 1 and your weekly blog; 6. Start thinking about some ideas for your 1 min film.
    • 11. 1. What is Digital Video?
    • 12. Analogue video
    • 13. Analogue video Digital video 011001110010101001001000110011100 101010010010001100111001010100100 100011001110010101001001000110011 100101010010010011001110010101001 00100 binary code
    • 14. Digital Video differs from Analogue Video in 3 main ways:
    • 15. Digital Video differs from Analogue Video in 3 main ways: Quality
    • 16. Digital Video differs from Analogue Video in 3 main ways: Quality Longevity
    • 17. Digital Video differs from Analogue Video in 3 main ways: Quality Longevity Editing
    • 18. (a) Quality Tape Format Analogue or Digital? Max Lines of Resolution VHS Analogue 240 8mm Analogue 280 TV (pre-digital) Analogue 300 S-Video/SVHS Analogue 400 Digital Satellite TV Digital 400 MiniDV Digital 500 High-Definition Digital 720 or 1080 David Pogue and Aaron Miller iMovie ’09 & iDVD: The Missing Manual (2009)
    • 19. (a) Quality Analogue video degrades in quality when copied
    • 20. (a) Quality Image degradation e.g video ‘noise’ Analogue video degrades in quality when copied
    • 21. (a) Quality Image degradation e.g video ‘noise’ Analogue video degrades in quality when copied
    • 22. (a) Quality ‘Perfect’ copies each time Image degradation e.g video ‘noise’ Analogue video degrades in quality when copied
    • 23. (a) Quality ‘Perfect’ copies each time Image degradation e.g video ‘noise’ Analogue video degrades in quality when copied
    • 24. (b) Longevity 10-12 years? 30+ years? signal degrades no signal degradation
    • 25. (c) Editing Linear Editing (Analogue) Non-Linear Editing (Digital) http://en.wikipedia.org/wiki/Non-linear_editing_system
    • 26. 2. How can we copy DV from one device to another?
    • 27. Different types of Camcorder Type Storage Issues cheap, excellent quality, must MiniDV mini cassette tape rewind & FF to access material & imports in real time. only 20 mins of video per DVD mini DVD disc, don’t work in Macs holds several hours, must be Hard Drive Hard Drive imported to computer when full Compact SD Memory Card cheap, good quality, poor audio Digital Camera SD or Compact Flash cheap, good quality, poor audio always available, quality not Mobile Phone SD or onboard memory great, poor audio
    • 28. A DV camera can capture video to: You can copy DV from one device to another using: • Digital Video tape (miniDV tape). • (mini) DVD. • USB 2.0 • Hard Drive. • ‘Firewire’ 400 or 800 • Removable media such as an SD card. • Hard Drive (see above) • A built-in webcam e.g iSight on Macs. • Removable media such as an SD card. • Bluetooth?
    • 29. 3. How can DV be played on a computer?
    • 30. Computer based video players VLC Player
    • 31. 4. How does DV vary according to quality and appearance?
    • 32. File format File Extension How it is used MPEG1 .mpg For web downloads and Video CDs MPEG2 .m2v DVDs MPEG4 (AVCHD .mp4 Web downloads, mobile phones and iPods, newer or H.264) hard drive camcorders QT Movie .mov Web downloads, web streaming and CD ROM AVI .avi Computer use and some digital cameras Windows Media .wmv Computer use, web streaming and download, CD ROM RealNetworks .rmp Web streaming and download Media 3G video .3gp Mobile phone video format DV Stream .dv A very high quality form of digital video for editing
    • 33. Frame rates 25 fps action 12 fps action
    • 34. Frame rates
    • 35. Window Size/Pixels
    • 36. Aspect Ratio 4 X 3 Standard format 16 X 9 Widescreen format
    • 37. Assignment One see your workbook for more information

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