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Jul - Computers and Technology - Batch PNG -> GIF conversion utility New poll - New thread - New reply
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Xkeeper

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Posted on 03-11-08 11:28:24 PM Link | Quote
I just need one that doesn't dither without a reason, is fast, and is commandline.

ImageMagick works, but takes for-fucking-ever.

Irfanview works too, and it's fast, but it reduces the colors and dithers... unacceptable when there's 23 colors to start with.

Saving them via imagegif() in GD has mostly the same result (pointless dithering)...

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Nicole

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Posted on 03-11-08 11:30:00 PM Link | Quote

I know at one point Acmlm had an old trial version of PSP4 on his server- as I recall, that had a fairly good Batch Conversion tool, though I haven't had to use it in awhile.

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Posted on 03-11-08 11:59:22 PM Link | Quote
Yep, Paint Shop Pro 4 does it fine, no useless dither either (as long as the PNG is 8bit or lower anyway)

But it's not commandline, so I'm not perfectly sure that's what you need



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Joe
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From: Pororoca

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Posted on 03-12-08 12:25:36 AM Link | Quote
Well, if the tools work fine on palla palet indexed PNGs and the images aren't indexed to begin with then you could just run them through pngout first.

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chungy
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Posted on 03-14-08 05:31:53 AM Link | Quote
Originally posted by Xkeeper
ImageMagick works, but takes for-fucking-ever.

What?
for i in *png
do
convert "$i" "`basename "$i" png`gif"
done

protip: if using Windows, install MSYS. Life gets easier.
Xkeeper

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Posted on 03-14-08 05:28:23 PM Link | Quote
Originally posted by chungy
Originally posted by Xkeeper
ImageMagick works, but takes for-fucking-ever.

What?
for i in *png
do
convert "$i" "`basename "$i" png`gif"
done

protip: if using Windows, install MSYS. Life gets easier.

system("mogrify.exe -format gif *.png");

Using a for loop to look at every file isn't going to magically make it take less time.

Well, if the tools work fine on indexed PNGs and the images aren't indexed to begin with then you could just run them through pngout first.

PNGOUT takes even longer, and it still doesn't work that way, so...

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Posted on 03-14-08 07:49:50 PM Link | Quote
Which doesn't work that way, PNGOUT or the PNG to GIF converters you're using? The version of PNGOUT I'm using automatically reduces bit depth whenever possible.

Plus, PNGOUT is way faster if you tell it not to compress. 
PNGOUT /s4 infile.png outfile.png


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Posted on 03-14-08 07:51:17 PM Link | Quote
The other (faster) conversion utilities. They still break.

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Jul - Computers and Technology - Batch PNG -> GIF conversion utility New poll - New thread - New reply


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