# VideoExport: NoSuchFieldError: You may be using a library that's incompatible with this version of Processing

**URL:** <https://discourse.processing.org/t/videoexport-nosuchfielderror-you-may-be-using-a-library-thats-incompatible-with-this-version-of-processing/44782>\
**Category:** Libraries\
**Created:** [July 19, 2024, 3:08am UTC](https://discourse.processing.org/t/videoexport-nosuchfielderror-you-may-be-using-a-library-thats-incompatible-with-this-version-of-processing/44782 "2024-07-19T03:08:14Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [July 20, 2024, 3:19pm UTC](https://discourse.processing.org/t/videoexport-nosuchfielderror-you-may-be-using-a-library-thats-incompatible-with-this-version-of-processing/44782/2 "2024-07-20T15:19:15Z")

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I followed the trail here for W10 and P4:

_[NoSuchFieldError: frame on Processing4 · Issue #69 · hamoid/video\_export\_processing · GitHub](https://github.com/hamoid/video_export_processing/issues/69)_

The above directs you to here:  
_[GitHub - hamoid/video\_export\_processing at kotlinGradle](https://github.com/hamoid/video_export_processing/tree/kotlinGradle)_

And I followed the _Using the Library_ instructions.

I now get this instead of an error:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/f/5/f528b90448e17c2267473381e3c21f9c90474aa3.png)

I have not installed _FFmpeg_ to test if it works past this point.

_UPDATE_

I installed FFmpeg and it now saves a _movie_ but it has this issue:  
_[NullPointerException: it must not be null · Issue #72 · hamoid/video\_export\_processing · GitHub](https://github.com/hamoid/video_export_processing/issues/72)_

Does this _KotlinGradle branch_ work on the Mac?

`:)`

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_[View the full topic](https://discourse.processing.org/t/videoexport-nosuchfielderror-you-may-be-using-a-library-thats-incompatible-with-this-version-of-processing/44782)._