[swfmill] Does swfmill have any options for image compression

[Luke Rajlich]

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 alpha,
nothing is printed out.

identify -verbose file.png | perl -pe 'while(<STDIN>){ if(/^\s.*alpha:
(\w+)-bit/){print "$1";}}'

Luke

On Tue, May 13, 2008 at 4:01 PM, Walton, Lynn <Lynn_Walton at adp.com> wrote:
> Hi Ralf and others,
>
>
>  > This should work with every png file with an alpha channel.
>  > Ralf
>
>  Sorry to be a pain, but would you happen to be able to tell me the way
>  with ImageMagick to be able to tell if the png file has an alpha
>  channel?
>
>  I've been studying all the ImageMagick references I can find, but
>  haven't found it yet.
>
>  Of the info in identify -verbose, I don't know which would be the most
>  reliable indicator?
>
>  Thanks,
>  Lynn
>
>
>
>
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