I don't know a fx expression that returns the alpha channel depth. But
I'm no ImageMagick expert.
Ralf
Actually ... I spoke to soon. I discovered this:
identify -format %[fx:a] my.png
is not behaving as I initially thought. So maybe Ralf or someone else
knows a better fx expression
Actually ... I spoke to soon. I discovered this:
identify -format %[fx:a] my.png
is not behaving as I initially thought. So maybe Ralf or someone else
knows a better fx expression to use?
identify -verbose file.png | perl -pe 'while(STDIN){ if(/^\s.*alpha:
(\w+)-bit/){print $1;}}'
Luke
Hi Lynn,
Identify verbose should have some lines indicating channel depth,
there should be one called alpha:
Channel depth:
gray: 8-bit
alpha: 1-bit
I have written a one line script to tell me the bit depth of the alpha
channel from the output of identify -verbose. If there is no
my.jpg
Put clip id=my_mc import=my.jpg / in my simple movie xml.
Thanks,
Lynn
-Original Message-
From: Walton, Lynn
Sent: Tuesday, May 13, 2008 6:02 PM
To: 'swfmill@osflash.org'
Subject: Re: Does swfmill have any options for image compression
Hi Ralf and others,
This should work
quoting mawe [EMAIL PROTECTED]:
I want to add that the PNG preserve its full alpha capabilities, though it
had been grilled by this
lossy compression. Means I can put something under it and this will show
through. I can even animate
the whole thing, continuous transparency still works.
Flash seems to require a color image with pre-multiplied alpha,
otherwise the colors in semi transparent areas are wrong. You can use
the following command to create the color image using ImageMagick:
convert source.png -channel RGB -fx u*a image.jpg
Ralf
I tested this theory and I was
Tested it at work, with a 24 bit PNG with semi-transparent areas, saved for
web out of Photoshop:
- Original PNG: 858 KB
- SWF output size, with JPEG quality for publishing set to 0 (zero): 177 KB
- SWF output size, JPEG quality set to 100 (hundred): 627 KB
The low quality version
Mark Winterhalder schrieb:
Tested it at work, with a 24 bit PNG with semi-transparent areas, saved for
web out of Photoshop:
- Original PNG: 858 KB
- SWF output size, with JPEG quality for publishing set to 0 (zero): 177 KB
- SWF output size, JPEG quality set to 100 (hundred): 627 KB
i asked this 1 or 2 weeks ago also, and the answer was no, but because i
need to import a lot of png's i decided that flash is best because can
compress them, and can create one frame for each image.
otherwise is unacceptable for swfmill to let them at 100% quality.
On Fri, Apr 25, 2008 at 9:07
Mark Winterhalder schrieb:
Yes, the Flash IDE is what I meant.
I'd be curious about an experiment somebody with access to Flash could
do: A simple SWF with just a single PNG, once with lowest compression,
then highest compression, and how those compare to each other and a
Swfmill
Mark/Ralf/Joel .. thanks for all your input on this topic! It's ironic
that Joel and I asked the same question on the same day. I had posted
mine before I received my digest and saw his. :)
Mark - If you re-read my post, I kind of did show what you were asking.
I said if we just created a
mawe schrieb:
Mark Winterhalder schrieb:
Yes, the Flash IDE is what I meant.
I'd be curious about an experiment somebody with access to Flash could
do: A simple SWF with just a single PNG, once with lowest compression,
then highest compression, and how those compare to each other and a
I tested this theory and I was correct, the 8bit mask doesn't work for
semi-transparencies (unless I'm doing it incorrectly). I followed your
example ralf and it worked great for images with 0% or 100% transparency,
but not for variable transparencies (ie. tinted glass). Is this a bug with
Does swfmill have any options for image compression?
I thought not, but a colleague saw this line from the release page on
0.2.6 that says: minimum compression buffer size for importing PNGs
and thought that might me you could?
I see this post from Mark in 2005
On Thu, Apr 24, 2008 at 7:15 PM, Walton, Lynn [EMAIL PROTECTED] wrote:
Does swfmill have any options for image compression?
Hmm... the reply I just sent to the other thread would have fit better here. :)
I think the compression setting in Flash only affects JPGs (where
Swfmill just takes what
On Thu, Apr 24, 2008 at 2:23 PM, Mark Winterhalder [EMAIL PROTECTED] wrote:
I think the compression setting in Flash only affects JPGs (where
Swfmill just takes what you pass to it, so you'd have to use another
program to compress your JPGs further if desired).
If you're talking about the
On Thu, Apr 24, 2008 at 11:32 PM, Joel Poloney [EMAIL PROTECTED] wrote:
On Thu, Apr 24, 2008 at 2:23 PM, Mark Winterhalder [EMAIL PROTECTED] wrote:
I think the compression setting in Flash only affects JPGs (where
Swfmill just takes what you pass to it, so you'd have to use another
program
I'm not sure this is the same thing the flash IDE does but this is a way
to get better compression for transparent pngs using swfmill:
I have used ImageMagick to do the image conversions:
1. Convert the image to an jpg (only color information):
convert source.png image.jpg
2. Convert the alpha
Ralf,
Sounds good, I'm going to try this soon. Do you know how well this works if
parts of image are 50% transparent instead of 100%? I'm going to try it, but
I'm afraid that the colors might not look right.
-- Joel
On Thu, Apr 24, 2008 at 3:00 PM, Ralf Fuest [EMAIL PROTECTED] wrote:
I'm not
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