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Handling Duplicate Filenames

On my DJI Phantom 4 Pro drone, when I run multiple missions to do 3D modeling that require multiple batteries I get multiple folders of image files that begin at image 001.  Am I correct in that when you upload these images to Pix4D cloud for processing, it treats the same filenames as duplicate files and doesn’t bother to inspect the filesize or datetime stamp to see they are not duplicate files?

That seems to be what happened when I tried it and I ended up having to run the files through an auto renamer to add an incremental number to all the image filenames to make sure all filenames were unique.

I am thinking (hoping) I am missing something, or doing something wrong as running multiple missions where the filename numbers reset is a pretty common occurrence and I would be completely baffled that the Pix4D Software Designers had not taken that into consideration as that’s a pretty basic consideration.

Hi Jeff,

Thank you very much for your feedback.

We do not handle the duplicate filenames today for the reason that we do not support multiple folder uploads (to keep compatibility with older browsers). Just removing file duplicates check will not help us much because uploading true duplicates files would trigger another set of issues.

Congratulation for having found a workaround. There is a similar thread discussing this issue here:

We hope to find the time to implement a better algorithm to disambiguate real duplicates from different files with the same name.


Thanks again for your feedback,



Hey Jeff,

Another workaround we can suggest is the following.

Move all the images to the same directory on the computer. If the images have the same name, a pop-up asks if the files should be replaced or not. Click No to all , so that the images will have a suffix (1), (2), (3), etc. Select all the images to drag and drop them on the cloud web upload page of a newly created project.

I hope it helps,