pngcrush 1.6.4

[Black_Fox1]

Does anyone have Win32 binaries of pngcrush v1.6.4?

[encode]

Just compiled:
pngcrush.exe.quad (55 KB)

[Black_Fox1]

Sorry, but it doesn't work for me
When run, it just changes command-line window's name to pngcrush.exe and nothing else happens.

[encode]

IIRC, it tries to compress from stdin to stdout. You must specify the command line parameters first! Read the pngcrush manual! (or type pngcrush <filename>)

Hope this helps!

[Black_Fox1]

well... I dont know... I expected better results than those produced by 1.5.10 to be honest. Im probably still doing something wrong.

type pngcrush <filename>

I already tried that, but that only gzips the file (compressess to .gz), showing on example of PNG from my testset, which is compressed to 240,147. That PNG measures 251,564 bytes, which is compressed by pngcrush 1.5.10 to 190,318 bytes and is still viewable via any program capable of opening png images.

Help to 1.6.4 obtained from sourceforge says
usage: pngcrush [options] infile.png outfile.png
but that only produces "outfile.png not found" (and compresses infile.png)

[LovePimple]

I already tried that, but that only gzips the file (compressess to .gz), showing on example of PNG from my testset, which is compressed to 240,147.

I have checked this myself with the following results:

Typing "pngcrush test.png" appears to produce a standard GZIP compressed file "test.png.gz".

Typing "pngcrush -h >help.txt" results in a zero byte file.

Executable is only about half the size when compared to v1.5.10.

[encode]

I don't know what exactly PMGCRUSH is - I've just compiled the newest version "AS IS". Probably, a special #define must me specified during compile. Executable size is a compiler related thing. Anyway, within a couple of days, I look at its source carefully.

[LovePimple]

Is this the correct archive to download for the v1.6.4 source code?
pngCrush v1.6.4 source code?

[encode]

Yes it is! Another package (pngcrush-1.6.4-nolib.zip) is just standalone pngcrush source with no zlib and libpng incuded.

[LovePimple]

Thanks!

[LovePimple]

To Black_Fox

What do you think of OptiPNG?


BTW: I think you will find this file interesting as a compression test.

Download file

[Black_Fox1]

I think you will find this file interesting as a compression test

Is it that home-made game module which was discussed some time ago at 7-zip forums? Its really surprising how individual compressors differ in performance at this file, nonetheless its extremely unusual

What do you think of OptiPNG?

Seems like a nice app - PNG->189,949 and BMP (to PNG) ->880,928 bytes

[LovePimple]

Is it that home-made game module which was discussed some time ago at 7-zip forums?

Yes! I find it very interesting that ONLY WinRAR can compress this file significantly.

[LovePimple]

Seems like a nice app - PNG->189,949 and BMP (to PNG) ->880,928 bytes

Do you think it is better than pngCrush?

[Black_Fox1]

Do you think it is better than pngCrush?

Its a fork of it, so they are quite similar. OptiPNG compresses only into memory as I read somewhere and hence should be faster, making it better than pngcrush

[Black_Fox1]

In case anybody was interested, month and a half after last post in this topic, pngcrush 1.6.4 win32 & DOS executables were released. There is some compression improvement (a few %, obtained via -brute param) in comparison with previous (1.5.10) version

[Vacon]

Hello everyone,

In case anybody was interested,...

Thank you, Black_Fox!

Best regards!

[LovePimple]

Thanks BF!