multiple files and %[filename:...] handling.

[anthony]

Code: Select all

  convert eye.gif news.gif storm.gif    -scale 200% \
          -set filename:f '%t_magnify.%e' '%[filename:f]'

This works, except that all three files are being saved to the first file name!
That is not a bug, it is what I would expect.

What is a bug is that the result however is NOT a 'GIF animation'.
that is each of the three images are being saved separately to the the
first file name, as separate images with separate opens/closes.

Note however, that adding '+adjoin'

Code: Select all

  convert eye.gif news.gif storm.gif    -scale 200% \
          -set filename:f '%t_magnify.%e'  +adjoin '%[filename:f]'

and we get three separate image files, as we should.

The first (-adjoin) case is incorrect, no matter how you look at it.
The second (+adjoin) is correct handling.

[magick]

We get:

• -> convert eye.gif news.gif storm.gif -scale 200% -set filename:f '%t_magnify.%e' '%[filename:f]'
  -> identify eye_magnify.gif
  eye_magnify.gif[0] GIF 64x64 64x64+0+0 8-bit PseudoClass 8c 2.5KB
  eye_magnify.gif[1] GIF 64x64 64x64+0+0 8-bit PseudoClass 8c 2.5KB
  eye_magnify.gif[2] GIF 64x64 64x64+0+0 8-bit PseudoClass 8c 2.5KB

Isn't that the expected behavior?

[anthony]

Yes it is. Sorry it seems I didn't see the animation, because there was no -loop 0.

My bad... Thanks.

[anthony]

Hmmm but changing the suffix of the file doesn't.

Code: Select all

convert eye.gif news.gif storm.gif -scale 200% \
       -set filename:f '%t_magnify.png' +adjoin '%[filename:f]'

Saves GIF files into filenames with a .png suffix.

Code: Select all

file news_magnify.png
news_magnify.png: GIF image data, version 89a, 64 x 64

Of course I could force it by also adding a PNG: prefix...

Code: Select all

convert eye.gif news.gif storm.gif -scale 200% \
       -set filename:f '%t_magnify.png' +adjoin PNG:'%[filename:f]'