Imagemagick: identify&convert of DPX file cause error

[mtrepanier]

Description

Using the latest version of ImageMagick cause the error improper image header
But using an older version, I have try a lots of them and found out that 7.0.7-28 will work but 7.0.7-29 and all newer version will fail.

Some DPX file will work, but some not

Steps to Reproduce

Here's the failing DPX file: https://drive.google.com/file/d/1xPr3YgHd1oLuA99CZRa7XRFYn5kzfTbP/view?usp=sharing

# identify will_fail.dpx
# identify: improper image header 'will_fail.dpx' @ error/dpx.c/ReadDPXImage/855.

System Configuration

• ImageMagick version:
• Environment (Operating system, version and so on): Centos7
• Additional information: compiled locally using docker

[fmw42]

Perhaps you should provide the command line that created it and the input image to the command line, so that the developers can try to reproduce your processing and result

[mtrepanier]

It's a DPX file coming from a client that we want to convert to a jpeg. The DPX file is in the ticket information.

To reproduce, it's easy, use newest version of imagemagick and just run a simple identify on this file and you will get the error. Then rollback to version 7.0.7-28 and you will see that it's passing.

I have try a lot of version and 7.0.7-28 seem to be the newest version that accept this file.

[dlemstra]

7.0.7-40 is the latest version, can you reproduce the issue with that version?

[mtrepanier]

Yes, all version after 7.0.7-28 I can reproduce it

But I think you meant 7.0.8-40 @dlemstra

[mtrepanier]

Well at least for centos7

[urban-warrior]

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ https://www.imagemagick.org/download/beta/ by sometime tomorrow.