lossy/lossless

• What does lossless compression mean?

  It means no loss of data occurs
• Lossy data compression reduces the size of digital media by removing some information from the original file without significantly affecting its quality or content.
• Lossy data compression is commonly used with large multimedia files such as videos and music because these types of files contain redundant information that can be removed without causing noticeable degradation in image or sound quality.
• Lossy compression is a technique where data is permanently ​removed from the file to reduce the size
• works for

  audio

  images

  videos
• doesn't work for

  word/text files
• What are the two types of compression mentioned?

  Lossy and lossless compression
• What is the primary benefit of compression?

  It reduces file size for quicker transfer
• What are the advantages of file compression?

  • Faster download, upload, and transfer speeds
  • Increased storage capacity for more files
• What happens to data in lossy compression?

  Data is permanently removed from the file
• Does lossy compression result in a loss of data?

  Yes, it always results in a loss of data
• Can a file compressed using lossy compression be restored to its original state?

  No, it will never go back to the original
• What can be retrieved from a file after lossless compression?

  Full data can be retrieved
• What is the characteristic of lossless compression?

  It does not permanently remove data
• Why might you choose lossy compression for images?

  Because small data loss may not be noticeable in images
• How does lossless compression compare to the original file?

  It will be identical to the original
• In what scenario would you prefer lossless compression over lossy compression?

  When you need to preserve all data, such as text files
• What is a key difference between lossy and lossless compression regarding data retention?

  Lossy compression results in data loss, while lossless retains all data
• What is an example of data that should use lossless compression?

  Text files, where losing words would be noticeable