Lesson 2 - Research Video Standards
- 1. Digital Video Lesson 2
- 2. Lesson Goals Know various video broadcast methods Be able to identify resolution, aspect ratio, file formats Understand where various standards are used #broadcast #resolution #aspect ratio #format
- 3. How can videos be broadcast? Think about the various uses last lesson…
- 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. Resolution Know various broadcast methods Research the use of video standards Standard Definition (SD) This is the number of pixels displayed 480p 720x480 on a screen given as width x height 576p 720x576 High Definition (HDTV) 720p 1280x720 1080p 1920x1080 Ultra High Definition (UHDTV) 4K 3480x2160 8K 7680x4320 Digital Cinema (DCI) 2K 2048x1080 4K 4096x2160 #broadcast #resolution #aspect ratio #format
- 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 21:9 Standard TV format Accepted widescreen video Very wide screen format that is for second half of standard used for TV, DVD mainly used in cinemas 20th century and HD Video #broadcast #resolution #aspect ratio #format
- 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. 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. 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. 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