ffmpeg question on Audacity 2.4.2 and ffmpeg 4.3.1


I’m on 10.15.7 (Catalina).

I just installed Audacity 2.4.2 and I already have ffmpeg 4.3.1 installed via home-brew.
So how do link Audacity to use this version of ffmpeg?

When I go to preferences in Audacity → preferences → Library

I can’t find this file on my Mac : /Library/Application Support/audacity/libs/ffmpeg.55.64bit.dylib

These are the files present under ~/Library/Application Support/audacity
AutoSave Plug-Ins audacity.cfg pluginsettings.cfg
Macros SessionData pluginregistry.cfg

Where did you install it?

– Bill

Hi Bill,

I don’t recall, I think its under /usr/local/bin

This is what I see:
% ls -al /usr/local/bin/ffmpeg
lrwxr-xr-x 1 computer4 admin 35 Sep 27 00:22 /usr/local/bin/ffmpeg → …/Cellar/ffmpeg/4.3.1_1/bin/ffmpeg

As I mentioned in my previous post, I also see files under
~/Library/Application Support/audacity

Does this help?

You can either point Audacity to the location where you installed ffMPEG, or you can use the installer linked-to from here, which will put the correct version of ffMPEG into the default location for Audacity.
– Bill


In the preferences settings for audacity, its looking for this file: ffmpeg.55.64bit.dylib
It’s not looking for where audacity is installed.

In my installation of ffmpeg I can’t find this file.

Can I have two versions of ffmpeg at the same time if I use the version for audacity?

By “default location for Audacity” I meant “/Library/Application Support/audacity/libs/”

Yes, you can have many installations of ffMPEG. I still suggest you download and run the recommended PKG installer.

– Bill