Introduction to video

1. What are some advantages of digital video?Digital video has many advantages including its great ease of use, portability, and durability. Footage can also be updated or changed with ease. Digital video presentations can be distributed easily.

2. What is meant by frame rate in video? Frame rate in video says how many images of a movie are displayed every second a movie is played. The higher the frame rate in a video, the smoother objects move during playback.

3. Are all videos/movies the same frame rate, explain your answer. Not all videos and movies are the same frame rate.

4. What is meant by resolution, how is it measured? Resolution is the image created as a result of the number of pixels or dots used. This can be on a computer monitor or a setting on a digital camera. It is measured in pixels.

5. What is the colour system called RGB?
The RGB color model is an additive color model in which red, green, and blue light are added together in various ways to reproduce a broad array of colors.

6. Explain the video standards PAL, NTSC, and SECAM. What are the main differences between them?

 Here is a chart I screenshotted from http://www.high-techproductions.com/pal,ntsc.htm The difference between them is that each standard is incompatible with each other. Eg. A recording from France could not be played on an American DVD player.

7. What standard do we use in Australia?In Australia, we use the PAL standard.

8. What is an IEEE 1394 port?
An IEEE 1394 port is an entry point for devices that you want to connect to your computer. It is also known as a fire wrie that allows the connection of periphals to a computer such as video cameras. An IEEE 1394 port supports a higher bandwidth than a USB which allows you to feed from a high-resolution digital camera onto a computer with ease.

9. Why do video cameras use video compression?Video cameras use video compression to save memory.