Resolving the FFmpeg Library Loading Error on Apple M1

Resolving the FFmpeg Library Loading Error on Apple M1

10 November 2024 Stephan Petzl Leave a comment Tech-Help

If you’re encountering an error while attempting to run FFmpeg on an Apple M1 device, specifically an error message related to the library libmbedcrypto.13.dylib, you’re not alone. This issue often arises when dependencies required by FFmpeg are not properly linked or installed, particularly when using Homebrew for package management.

Understanding the Error

The error message might look something like this:

dyld[89251]: Library not loaded: '/opt/homebrew/opt/mbedtls/lib/libmbedcrypto.13.dylib'
Referenced from: '/opt/homebrew/Cellar/librist/0.2.7_2/lib/librist.4.dylib'
Reason: tried: '/opt/homebrew/opt/mbedtls/lib/libmbedcrypto.13.dylib' (no such file), '/usr/local/lib/libmbedcrypto.13.dylib' (no such file), '/usr/lib/libmbedcrypto.13.dylib' (no such file)

This error indicates that the dynamic linker is unable to find the specified library file, which is crucial for FFmpeg’s operation. The problem often stems from incomplete or incorrect installations of related packages.

Solution: Reinstalling Dependencies

To resolve this issue, you can follow these steps to uninstall the problematic dependencies and then reinstall FFmpeg:

  1. Uninstall the librist package while ignoring dependencies:
  2. brew uninstall librist --ignore-dependencies
  3. Similarly, uninstall the mbedtls package:
  4. brew uninstall mbedtls --ignore-dependencies
  5. Reinstall FFmpeg, which will also reinstall the necessary dependencies:
  6. brew reinstall ffmpeg

These steps should help in re-establishing the necessary library links and resolving the error.

Why This Works

By uninstalling and reinstalling these packages, you ensure that Homebrew correctly manages and links all dependencies, particularly for architectures like Apple M1 where compatibility can sometimes be an issue.

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