Multimedia 3 - Video Data

How is video data stored in a computer?

• In RAM

• A series of moving pictures

• in a big file

• A series of still images

What is meant by the term 'resolution'?

• Number of pixels of a fixed colour

• Number of colours in a fixed area

• Number of pixels in a fixed area

• Total file size

What does FPS stand for?

• Frames Pin Second

• Frames Per Sequence

• Frames Per Second

• Fruit Please Sadie

What are 3 things that can be done to increase the quality of a video file?

• Increase the colour depth

• Increase the length of the videa

• Increase the FPS

• Decrease the FPS

• Increase the resolution

What effect does compressing a video file have on its file size?

• It stays the same

• It gets smaller

• It doubles in size

• It gets bigger

What effect would decreasing the FPS of a video file have on file size?

• It would get smaller

• It would get bigger

• It would stay the same

• It would double

What effect would increasing the FPS have on the length of a video?

• None

• It would get longer

• It would get shorter

• It would be half its length

Which one of the following is an uncompressed video file type?

• Avi

• Mp4

How does mpeg (or mp4) compression work?

• Records the resolution of each frame

• Records each frame on its own

• Records the changes in colour between frames

• Records the colour depth of each frame.

What type of compression does mp4 use?

• Lossy

• Lossless