Issue using %d operator and filename:label

[cuddlyogre]

I am attempting to output all of the frames of an animated gif to an individual file, while preserving the frame's delay time. This is my command:

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convert.exe image.gif -coalesce -set filename:label %T "frame_%02d_%[filename:label]0.png"

My problem is that when I use %02d I get file names like this:

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image_00_%[70.png

or when I use %07d I get:

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image_0000070.png

When I use %04d I get:

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image_0000_70.png

which is what I want, but I am puzzled as to what is happening here.

It appears that 4 leading zeros are required in cases like this or else it starts either reading or eating whatever is in the following %[filename:whatever]. It begins behaving normally when it encounters non-variable text again. Is there something I am not doing right?

[snibgo]

"convert.exe" means you are running on Windows, correct? If your commands are in a batch file, you need to double the "%" signs, because "%" on its own is interpreted by the Windows shell in a special way.

[cuddlyogre]

I am running it through the command prompt directly. When I use double percent signs, the exported file names get all screwed up or the command won't complete at all. I feel there is more to it than that.

[cuddlyogre]

Not sure what is happening, but I have found a bit of a workaround. The minimum amount of leading zeros you can have seems to be four in these cases and for each extra leading zero you want, you have to add 1 zero to %d and increment the number of leading zeros by the number of zeros you added.

%04d (minimum that works as expected) gives:

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image_0000_7.png

%005d gives:

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image_00000_7.png

%0006d gives:

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image_000000_7.png

...and so on.

[snibgo]

Weired. What version of IM, and what platform?

[fmw42]

I am not a windows user, but try

convert.exe image.gif -coalesce -set filename:label "%%T" "frame_%%02d_%%[filename:label]0.png"

[snibgo]

The OP is running from the command line so % should not be doubled as they would both be passed to IM convert, although this is generally harmless

If an environment variable called T already exists, that would cause a problem. Issue the command "set T=" to ensure it doesn't exist.

Trying this ...

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convert.exe image.gif -coalesce -set filename:label %T "frame_%02d_%[filename:label]0.png"

... (in 6.7.9, 6.8.2 and 6.8.3 on Windows 7), it seems IM is happy to have either "%02d" or "%[filename:label]" in the output name, but not both.

[cuddlyogre]

I am using 6.8.3 on Windows 7 and I have verified that "T" is not set as an environment variable. If I am reading you properly snibgo, it is a replicatable bug and not user error. In that case, I will file a bug report.

Your help was much appreciated.