Help! "File contains more than one image descriptor"

Question

I've seen this error message posted several times but none seem to have a solution that works for me.

I have a large Quicktime ProRes 4444 Alpha file that won't import into Premier or Adobe products. It does playback in QT but in Pr it give me the message "We were unable to open the file on disk. File contains more than one image descriptor."

I'm on an M1 Mac and I exported a clip with an alpha using Compressor. What does it mean when it says the file contains more than one image descriptor?

Thanks!

Peru Bob · Answer

Ran into this same problem trying to take ProRes 4:4:4:4 files output from Apple FCP-X into Adobe AE or Premiere. I found that taking the problematic ProRes 4:4:4:4 files into Apple Compressor and re-outputting them as new ProRes 4:4:4:4 files solves the problem. Note that compressor has to be set to "ProRes 4:4:4:4" and NOT to "ProRes 4:4:4:4 with Alpha." The "Preserve Alpha" button in the video setting must NOT be checked (this is the default setting).

This is, obviously, not the most elegant solution. But at least it works.

This was posted by Dean358

here:

https://community.adobe.com/t5/premiere-pro-discussions/quot-we-were-unable-to-open-file-on-disk-quot/m-p/10328848

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