Thursday, 7 September 2017

windows - Why doesn't ZIP Compression compress anything?


A 398MB directory was only compressed to 393MB using 7Z and Normal ZIP compression. Is this normal? If so, why do people continue to use ZIP on Windows?



Answer



If you're compressing things that are already compressed (AVI, JPEG, MP3), you won't gain much other than packing everything in a single file.


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