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Thread: gzip-1.2.4-hack - a hacked version of gzip

  1. #61
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    i have been using deflopt for along time . i use it after optipng then advdef or advpng the result is not just 20byte.. actually it varies based on the images some save byte but others save 10kb .. specially on texture images used for rendering.. i could figue it out.. how it can act that will on some files but not others..

    on ther hand pngout is best but veryslow there is no quick setting to reach the smallest file..

    anther program you can test is http://psydk.org/PngOptimizer
    but i noticed that in some palette images it can invert color or introduce colors that does not exist

  2. #62
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    Quote Originally Posted by maadjordan
    i use it after optipng then advdef or advpng the result is not just 20byte.
    Hard to say. usually depends on the image.

    BTW for those using jpegtran but not jpegoptim to optimize jpeg image for some reason (e.g. I use my ICL 9.1 + assembly highly optimized jpeg library) I made a "Send To" script as a frontend:
    @echo off

    :LOOP
    if %1== GOTO END
    SET NEWSIZE=0
    SET SIZEDIFF=0
    jpegtran -optimize "%~1" "%~1.new"
    if errorlevel 1 del "%~1.new" & echo %~nx1 ... jpegtran internal error. Skipped.
    for %%x in ("%~1.new") do SET NEWSIZE=%%~zx
    SET /A SIZEDIFF=%~z1-%NEWSIZE%
    if %NEWSIZE% EQU 0 del "%~1.new" & echo %~nx1 ... Zero byte output. Skipped.
    if %SIZEDIFF% LSS 0 del "%~1.new" & echo %~nx1 ... Output [%NEWSIZE%] is larger than original [%~z1]. Skipped.

    if exist "%~1.new" (
    echo %~nx1 ... from %~z1 to %NEWSIZE% [%SIZEDIFF%].
    move /y "%~1.new" "%~1"
    )
    shift
    GOTO LOOP

    :END
    echo Done.
    SET NEWSIZE=
    SET SIZEDIFF=

    pause

  3. #63
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    Quote Originally Posted by roytam1
    BTW for those using jpegtran but not jpegoptim to optimize jpeg image for some reason (e.g. I use my ICL 9.1 + assembly highly optimized jpeg library) I made a "Send To" script as a frontend:
    its jpegoptim or jpegtran library.. what libray you have optmized for speed

  4. #64
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    Quote Originally Posted by maadjordan
    its jpegoptim or jpegtran library
    No. They all use the IJG JPEG library.

    and JPEGOptim wont compile in Windows ICC/MSVC so I use jpegtran instead.

    I use Independent JPEG Groups JPEG software release 6b with x86 SIMD extension for IJG JPEG library version 1.02. This one is fast with ICC.

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