NPA Digital Media (Video) - File Formats 1

Multiple Choice

Which of the following is NOT a common video file format?

• AVI

• MOV

• JPEG

• MPEG-4

Multiple Select

Which of the following are examples of container file formats?

• AVI

• MPEG-4

• QUICKTIME (MOV)

• WMV

Multiple Choice

What technique does MPEG use to achieve high compression rates?

• Discrete Cosine Transform (DCT)

• Fourier Transform

• Run-Length Encoding

• Huffman Coding

Open Ended

Describe the type of compression used by MPEG and its effect on data quality.

Multiple Choice

Which file format requires a special player and a lot of disk space?

• AVI

• MOV

• GIF

• SWF

Multiple Select

Which of the following statements about GIF files is/are correct?

• GIF files support animated images.

• GIF files use lossy compression.

• GIF files can store a maximum of 256 colours.

• GIF files are commonly used for images on the web.

• The GIF file format supports millions of colours

Multiple Choice

Which of the following statements best describes SWF files?

• They are editable files for video editing.

• They are read-only files for user viewing.

• They are used for audio compression only.

• They are exclusively used for DVD-ROMs.

Open Ended

Describe the difference between lossless and lossy compression, providing an example of each.

Open Ended

Explain the difference between a container format and a codec, and give two examples of each.