Legacy ImageMagick Discussions Archive

The stars were finally right and I managed to test this, and the fix does indeed work. Tested both by backporting into a locally built rpm in Fedora 15 and by testing 6.7.1-9 in a F16 virtual machine.

Thank, belatedly.

The use of '[0]' read modifier with JPEG is redundant as JPEG can only contain one image
Note for interest: this comes from digikam (really kipi-plugins) which is how I first noticed the problem .

It looks like the kipi-plugin batch resizer works by building a 'convert' command to run for every ...

try

convert "test-18:37.jpg[0]" -resize 1024x600 -verbose "small/test-18:37.jpg"
Doesn't work.

I started testing old livecds to see when it stopped working


ImageMagick Bash
GOOD 6.5.8.10-6.fc13 4.1.2-4.fc13
GOOD 6.5.8.10-6.fc13 4.1.7-1.fc13
GOOD 6.5.8.10-7.fc13 4.1.7-1.fc13
BAD 6.6.4.1-14 ...

None of that seems to work, maybe I'm missing something. It's the combination of the colon and the '[0]' modifier at the end that causes problems.

I've played around a little but still can't work out what combination of quotes and escapes will make this work:
$ convert -resize 1024x600 -verbose ...

convert has a problem when the input filename contains ':' - e.g in a timestamp - and I use [0] to specify the first image frame.

$ convert -resize 1024x600 -verbose test-18\:37.jpg small/test-18\:37.jpg
test-18:37.jpg JPEG 1944x2592 1944x2592+0+0 8-bit DirectClass 2.651MB 0.130u 0:00.139
test-18 ...