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WorksheetsFile Compression and Digital Audio/Video Formats
Total questions: 12
Worksheet time: 3600secs
Compression is reencoding a file in a way that uses ____________________, but keeps most or all of the information intact.
fewer bits than the original
more bits than the original
the same number of bits as the original
zero bits compared to the original
An image starts with four black pixels. If it were compressed using ______________, the computer stores the number 4 and then the three bytes for the color black.
Run-Length Encoding
individual pixels
lossy compression
compression artifacts
Which of the following file types use lossless compression? Select ALL that apply.
GIF
PNG
ZIP file
JPG
If a video is heavily compressed, the computer may retransmit patches of data that should have been changed, which can cause funny-looking areas called...
(a)
For images, the most common (a) file type is the (b) .
A compression algorithm that doesn’t affect the original data. In other words, the uncompressed file will be exactly the same as the file before compression, bit for bit. This definition describes...
Lossless compression
Lossy compression
The kilobits of audio data processed each second refers to...
bitrate
compression artifacts
codec
WMV
MP3 is a format that uses _______ data compression to reduce file size.
lossy
lossless
Run-Length Encoding
In 1999, Microsoft released the (a) format to be used with their Windows Media Player and to avoid licensing issues associated with the (b) format.
Video files used to be so large that only the most powerful computers could run them. (a) were created to make video files more accessible.
______ is a very common format for Internet videos because it takes up much less space than many other videos types.
MP4
H.264
AVI
WMV
_______ uses an advanced compression algorithm that can compress a standard 120-minute film into 300MB.
H.264
HEVC
AV1
MPEG-4
