This document discusses digital video formats and standards. It explains that video can be broadcast using different methods and resolutions. Resolution is measured by pixel dimensions, while aspect ratio refers to the width-to-height ratio of frames. Common video standards include PAL for Europe/Africa, NTSC for North/South America, and high definition digital formats globally. File formats like MP4 are often used to store and distribute video online.

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