# Video library DLLs not found in Windows 10

**URL:** https://discourse.processing.org/t/video-library-dlls-not-found-in-windows-10/46213
**Category:** Libraries
**Created:** [April 14, 2025, 1:33am UTC](https://discourse.processing.org/t/video-library-dlls-not-found-in-windows-10/46213 "2025-04-14T01:33:16Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![nixiebunny](https://avatars.discourse-cdn.com/v4/letter/n/54ee81/32.png) [@nixiebunny](https://discourse.processing.org/u/nixiebunny)
#### Post date: [April 14, 2025, 1:33am UTC](https://discourse.processing.org/t/video-library-dlls-not-found-in-windows-10/46213/1 "2025-04-14T01:33:16Z")

</div>

I have just installed Processing 4.3.4 x86-64 on my Windows 10 i7 laptop. It is installed at  
\Users\David\Processing4.3.4\processing.exe  
I installed the Video library for Processing 4 from the Manage Libraries dialog.  
I am attempting to run the videoSDcard sketch from [pjrc.com](http://pjrc.com)  
This sketch fails with message:  
can’t load library avcodec-58 (avcodec-58|libavcodec-58|libavcodec-58-0) with -Djna.library.path=C:\Program Files\gstreamer\1.0\msvc\_x86\_64\bin. Last error:java.lang.UnsatisfiedLinkError: Unable to load library ‘avcodec-58’:

The file avcodec-58.dll does exist in the path  
\Users\David\Processing\libraries\video\library\windows-amd64  
but is not being found by Processing.

How can I resolve this problem?