There appears to be a problem with opening/importing QuickTime audio (m4a).
Build Info says:
“ffmpeg (FFmpeg Import/Export) Enabled”
Download and install Audacity 2.3.0 on clean image of MacOS
Record audio using QuickTime on MacOS 10.14.3, save at m4a file.
Try to open/import an m4a file in Audacity and get:
This version of Audacity was not compiled with QuickTime files support”
This alone appears to be some kind of bug/problem/inconsistency. Because it is saying one thing in Build Info and doing another.
I go to Preferences > Libraries and see:
FFmpeg Library Version: FFmpeg Library not found
I click “Locate” and it shows:
I verify there is no file with that name at that location.
I downloaded the dmg and zip from https://lame.buanzo.org/#lameosxdl
And neither contains libavformat.55.dylib
I used the locate command to search for libavformat55.dylib and it doesn’t appear to be anywhere on my filesystem.
At the moment, I am blocked from opening m4a files.