# Screen capture problem with FFmpeg version

**URL:** <https://discourse.slicer.org/t/screen-capture-problem-with-ffmpeg-version/17234>\
**Category:** Support\
**Tags:** registration, screen-capture\
**Created:** [April 21, 2021, 5:49pm UTC](https://discourse.slicer.org/t/screen-capture-problem-with-ffmpeg-version/17234 "2021-04-21T17:49:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![HodaGH](https://avatars.discourse-cdn.com/v4/letter/h/858c86/32.png) [@HodaGH](https://discourse.slicer.org/u/HodaGH)\
**Post date:** [April 21, 2021, 5:49pm UTC](https://discourse.slicer.org/t/screen-capture-problem-with-ffmpeg-version/17234/1 "2021-04-21T17:49:58Z")

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Hi all,

I want to use screen capture to make a video of fading between my fixed and registered images but before that I get an error while installing FFmpeg. I’m on MacOS Mojave and I installed FFmpeg with : brew install FFmpeg  
I tried reinstalling but it says you’re using the most up to date one which is version 4.4

ffmpeg error output: dyld: Library not loaded: /usr/local/opt/zeromq/lib/libzmq.5.dylib  
Referenced from: /usr/local/bin/ffmpeg  
Reason: Incompatible library version: ffmpeg requires version 8.0.0 or later, but libzmq.5.dylib provides version 5.0.0

Thanks for any help.