Library not loaded error and Abort trap: 6 when using ffmpeg

Question

After updating my mac to high sierra, I can't use ffmpeg

$ ffmpeg
dyld: Library not loaded: /opt/local/lib/libidn2.0.dylib
  Referenced from: /opt/local/lib/libgnutls.30.dylib
  Reason: image not found
Abort trap: 6

I appreciate any help!

Answer 1

I had the same problem after a security update. I found this Github issue with the same error message for ffprobe, a sister program. The solution was to uninstall and install again.

On macOS, I did:

brew uninstall ffmpeg
brew cleanup
brew install ffmpeg

Depending on your installation, you may need to run brew uninstall --ignore-dependencies ffmpeg (if you have dependencies such as opencv that require ffmpeg) or brew uninstall --force ffmpeg (if you have multiple versions).

And now FFMPEG works:

$ ffmpeg -version
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
...