Legacy ImageMagick Discussions Archive

Hi!

I'm new to this, and have been using the search option (and read a huge part of the documentation), to no avail. Redirect me to the correct section if necessary.

I've been trying to convert an online gif's first 6 frames into an appended .png image (in order to use that as a bitmap in Rainmeter).
The thing is, the gif in question (http://www.meteox.com/images.aspx?jaar= ... n=&tijdid=) renders this result http://s28.postimg.org/nhc5mjh5p/converted.png: only the changes from the previous frame are appended (with an alpha canal on the rest, I assume).

Using the -flatten option gives me a black background on the frames 1 to 6, and I've also looked into -coerce but I can't get it to give me the result I want.

How do I use the convert tool to give me an appended .png with each frame only superposing the new contents onto the last?

Thank you very much for your time!

This works for me on IM 6.9.3.0 Q16 Mac OSX

1. "-append" should come after the input images, not before.

2. The gif is compressed. "-layers coalesce" will uncompress it.

3. [0-6] will give you 7 frames, not 6.

Should have given the precisions: I'm in IM 6.9.3.0 Q16 on W10

Thank you so much! Both of you!

For someone that may have the same question:

Put the arguments after the image input, and put the -coalesce function before the append.

Put the arguments after the image input, and put the -coalesce function before the append.

Correct. IM 6 proper syntax is different from unix scripting. Raster images come right after convert, settings come before operators and operators are order sensitive.

See http://www.imagemagick.org/Usage/basics/#cmdline

Think of these as sequential operations that will be done in the order you give. First, read the gif. Next, decompress it (with either "-layers coalesce" or "-coalesce"). Then, append the images together. Finally, write the image.