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Computer Hope Forums  >>  Software  >>  Computer software  >>  Topic: Extreme compession tool? 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Extreme compession tool?  (Read 439 times)
Vikram Varaprasad
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« Reply #15 on: November 07, 2009, 03:47:17 AM »

Quote
It's empty. Every single character in the extracted Image is ascii 0.

Amazing...... Shocked what's happening ? while i got the files but you told it was written with 0's
I can't believe this ? why it was happening like that........................... Huh? Huh? Huh?
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Vikram...
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« Reply #16 on: November 08, 2009, 09:57:04 AM »

You are obviously doing something wrong.  Especially if you are seeing compression ratios that are that high.  It's just not possible to compress them that much.

<edit>  Are you sure that you aren't just compressing the links to the files?  </edit>
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Vikram Varaprasad
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« Reply #17 on: November 08, 2009, 08:51:29 PM »

No no no man....... they are files, I uncompressed and installed MSOffice 2003. But I don't know what happened when you uncompressed them. It's working on my desktop as well as on my notebook. I verified once again.....
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Vikram...
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« Reply #18 on: November 08, 2009, 08:58:27 PM »

I don't think that you did what you think that you did.
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Vikram Varaprasad
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« Reply #19 on: November 08, 2009, 09:08:17 PM »

I compressed them, and still i'm using them........
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Vikram...
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« Reply #20 on: November 08, 2009, 09:09:24 PM »

you can't use a compressed file.... unless they are compressed via the NTFS filesystem feature.
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If this is real life, where the heck is the decimal?
Vikram Varaprasad
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« Reply #21 on: November 08, 2009, 09:13:19 PM »

what i was did is here....

1)I downloaded winrar version 3.80
2)I copied the contents of my xp os into a folder
3)I copied MSOffice, Nero, VLC and some other files into the same folder where i put the windows.
4) Now using Nero 7 i make an image file of these
5) then I compressed that image file, and it came to 2MB

I gave it to my friends and they told it's working....
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Vikram...
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« Reply #22 on: November 08, 2009, 09:16:05 PM »

And you say that it went from what size before compression to what size after compression?
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« Reply #23 on: November 08, 2009, 09:17:03 PM »

Before compression 3.4GB
After compression  2MB
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Vikram...
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« Reply #24 on: November 09, 2009, 06:13:34 AM »

Not possible i say.
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« Reply #25 on: November 09, 2009, 09:10:53 AM »

No, that's positively unheard of.
Even 3.4 Gig to 2 Gig would be absolutely astounding.
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patio
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« Reply #26 on: November 09, 2009, 09:15:37 AM »

Wonder why the compressed files are empty ? ?

 Roll Eyes
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« Reply #27 on: November 09, 2009, 10:35:26 AM »

what i was did is here....

1)I downloaded winrar version 3.80
2)I copied the contents of my xp os into a folder
3)I copied MSOffice, Nero, VLC and some other files into the same folder where i put the windows.
4) Now using Nero 7 i make an image file of these
5) then I compressed that image file, and it came to 2MB

I gave it to my friends and they told it's working....


So we add piracy to the charge of falsehood...
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patio
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« Reply #28 on: November 09, 2009, 02:40:17 PM »

Why would it work for them and not the Expert ...one wonders ? ?
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 Last year I went fishing with Salvador Dali. He was using a dotted line. He caught every other fish.

 
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« Reply #29 on: November 09, 2009, 03:07:57 PM »

I just double-checked what I saw in the file with the following routine:

Code:
Public Sub CheckBytes(Byval onFile as String)
    Dim StreamOfFile as BCFile.FileStream
    Dim StringRead as String,CountMismatch as Long
    Set StreamOfFile = BCFile.OpenStream(onfile)
   
    Do Until StreamOfFile.AtEndOfStream
        StringRead = StreamofFile.ReadString(32768,strRead_ANSI)
        if StrComp(Stringread,String$(len(stringread),vbnullchar)) <> 0 then
            debug.Print "Compare mismatch"
            countmismatch = countmismatch+1
        End If
    Loop
    StreamOfFile.CloseStream()
    debug.print "number of 32K blocks that contain non-null characters:" & countmismatch

End Sub


I ran it on the extracted image. the result was that there were 0 32K blocks containing non-null characters.

This is not a valid image, and the only reason it is 20MB in size is because the entire thing is just one character repeated billions of times. In fact, 20MB is far more then would be necessary, the only thing you'd need to compress this file is a Unsigned long integer to store the number of bytes, so it could be reduced to only 8 bytes.

Wondering why it worked for your friends is irrelevant. Because it did not. There is not "it probably didn't work" or even an inkling of a possibility that it worked. saying it worked is analogous to saying you were able to turn a cooked egg into a raw egg again.

lastly, what exactly are you copying? your explanation is not clear. you copied the contents of your XP OS? Is this the CD, your windows directory, or what? same with the other entries. copying your program files folder is pointless and even if you had a valid archive from that it would be completely useless. And larger then 20MB.
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If this is real life, where the heck is the decimal?
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