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Lesson 2 - Research Video Standards

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Creative iMedia
Unit 214
Video Standards Research

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Lesson 2 - Research Video Standards

  1. 1. Digital Video Lesson 2
  2. 2. Lesson GoalsKnow various video broadcast methodsBe able to identify resolution, aspect ratio, file formatsUnderstand where various standards are used #broadcast #resolution #aspect ratio #format
  3. 3. How can videos bebroadcast?Think about the various uses last lesson…
  4. 4. Broadcast Know various broadcast methods Research the use of video standards Video can be broadcast using various methods including: #broadcast #resolution #aspect ratio #format
  5. 5. Resolution Know various broadcast methods Research the use of video standardsStandard Definition (SD) This is the number of pixels displayed480p 720x480 on a screen given as width x height576p 720x576High Definition (HDTV)720p 1280x7201080p 1920x1080Ultra High Definition (UHDTV)4K 3480x21608K 7680x4320Digital Cinema (DCI)2K 2048x10804K 4096x2160 #broadcast #resolution #aspect ratio #format
  6. 6. Aspect Ratio Know various broadcast methods Research the use of video standards This is the relationship between the width and height of a video: Standard Widescreen Cinemascope 4 16 21 3 9 9 4:3 16:9 21:9Standard TV format Accepted widescreen video Very wide screen format that isfor second half of standard used for TV, DVD mainly used in cinemas20th century and HD Video #broadcast #resolution #aspect ratio #format
  7. 7. Video Standards Know various broadcast methods Research the use of video standards Phase Alternating Line National Television High Definition System Committee Europe & Africa Developed in 1940 Predominant Digital Format 25 fps North/South America Better sound quality 625 scan lines 30 fps Americas  ATSC Superior picture 525scan lines quality Europe  DVB-T Smoother picture Standard Definition (PAL and NTSC) High Definition (HD) #broadcast #resolution #aspect ratio #format
  8. 8. File Formats Know various broadcast methods Research the use of video standards There are many different video file formats used including: #broadcast #resolution #aspect ratio #format
  9. 9. Your Task Know various broadcast methods Research the use of video standards Briefly explain the following: Broadcast Methods Resolution Aspect Ratio List the main video standards and explain where each is used: PAL NTSC High Definition List some file formats and say where they are most often used. #broadcast #resolution #aspect ratio #format
  10. 10. Key Words Know various broadcast methods Research the use of video standards Broadcast  The way in which a video is sent out for people to be able to view it Resolution  Number of pixels that make up the display, given as a width x height Aspect Ratio  Ratio of the width to the height on the display being used

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