Data Compression Video

What is the primary goal of data compression?

• To increase file size

• To make files more complex

• To reduce file size

• To change file format

How many bytes of color data are typically needed to store the color of a single pixel using the RGB model?

• 1 byte

• 2 bytes

• 3 bytes

• 4 bytes

Which compression technique reduces data by identifying and encoding sequences of identical values?

• Huffman coding

• Dictionary coding

• Run-Length Encoding

• Lossy compression

What is a key characteristic of lossless compression?

• It permanently removes some data to reduce file size.

• The decompressed data is identical to the original data.

• It only works for text files and simple images.

• It prioritizes speed over data integrity.

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What is the primary principle behind lossy compression techniques?

• Removing all redundant data to achieve the smallest file size.

• Discarding information that human perception is not good at detecting.

• Encoding data with perfect precision across all frequency bands.

• Converting files into a universal, uncompressed format.

How do lossy audio compressors leverage human hearing characteristics?

• They amplify all sound frequencies to ensure clarity.

• They discard all frequencies outside the human hearing range.

• They encode different frequency bands at varying levels of precision, based on human sensitivity.

• They convert all audio into a single, standardized frequency.

What is the term for discarding or reducing precision in data compression in a way that aligns with human perception?

• Data quantization

• Perceptual coding

• Lossless encoding

• Frequency modulation

Which technique is used in video compression to reduce file size by taking advantage of similarities between consecutive frames?

• Spatial redundancy

• Inter-frame similarity

• Pixel-by-pixel encoding

• Full frame re-transmission