How much to compress files? (7zip, WinRar, FreeArc)?

R

Roman —2017-09-25 11:43:09

rar

Roman —, 2017-09-25 11:43:09

Hello!
How much to compress files? I watched various tutorials where they compressed almost 100 GB into 50 KB, but I can’t compress, say, even by half ;( I
used 7Zip, WinRar, and FreeArc at maximum settings - it was compressed by a maximum of 10%.
For example, pdf 21 MB, compressed to 19 MB by different archivers at different settings >< Does
it matter which file types to compress
?
Thanks for the replies
UPD #2
Here is a 100GB to 50KB compression video → https://www.youtube.com/watch?v=pZj_rMcD7R8

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1 answer(s)

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Vladimir Kuts, 2017-09-25
@helloimnewbie

> 100 GB in 50 KB
If it turns out that way, then there is an appropriate amount of useful information in 100 GB. Read about information entropy.
> I need to compress photos/videos into archives
. Ordinary archivers (lossless) don't fit well. Look towards transcoding to lossy compression formats with acceptable quality for you.