The method that offers the greatest compression ratio is lossy compression. The compression ratio of lossy video codecs are generally more superior to audio and still-image.
• The video can be compressed immensely at a 100:1 ratio with little visible quality loss.
• Audio can often be compressed at a 10:1 ratio with imperceptible loss of quality
• Still images are also often compressed at a 10:1 ratio.
The compression rate of lossy compression is about 5-6% while the rate of lossless compression ranges from 50 - 60%.
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