Moving Image FIles

Question 1

What 3 factors affect the quality of a moving image?

Answer 1

Frame rate, resolution, and file format.

Question 2

What is frame rate?

Answer 2

The number of frames shown per second (fps); higher fps = smoother movement.

Question 3

What are common frame rates for different uses?

Answer 3

Film: 24 fps
TV/news: 30 fps
Gaming: 60 fps
Slow motion: 120 fps+

Question 4

What does resolution measure in moving images?

Answer 4

Number of pixels per frame (screen resolution).

Question 5

Name 3 common video resolutions.

Answer 5

SD (720×576) – DVDs
HD (1280×720) – Early HD TVs
4K (3840×2160) – Modern screens

Question 6

What happens if a high-res video plays on a low-res screen?

Answer 6

The extra detail won’t be visible.

Question 7

What are the 3 common aspect ratios?

Answer 7

4:3 (Pre-HD)
16:9 (Widescreen)
2.35:1 (Cinema)

Question 8

Name 4 common moving image file formats.

Answer 8

.avi, .mov, .mp4, .gif

Question 9

What are .mp4 and .mov files good for?

Answer 9

High quality and widely supported across devices and platforms.

Question 10

Why is .gif different from other video formats?

Answer 10

It supports short, looping animations and doesn’t use audio.