Audacity Forum

I want to edit the AAC audio from an mp4 video created with iMovie. When I try to open it with Audacity I get a notice that says I need to have the FFmpeg library. What the heck is that and how do I get it?

23:28:19: Audacity 2.4.1 23:28:19: Trying to load FFmpeg libraries... 23:28:19: Trying to load FFmpeg libraries from system paths. File name is 'avformat-55.dll'. 23:28:19: Looking up PATH environment variable... 23:28:19: PATH = 'C:\Program Files ...

... Instructions for Building Audacity 2.4.x on Linux Prerequisites: Repository sources (sources.list) must include source code sources. For MP3 / FFmpeg support, "non-free" repositories may need to be enabled. Root access is required for installation (usually via "sudo"). cmake ...

Hi. I am having exact the same problem now. I use 2.4.0 version and I cant locate FFmpeg. I have done instaliing step by step using the wiki instructions (https://manual.audacityteam.org/man/installing_ffmpeg_for_windows.html) and it didn`t help . What am I doing ...

Hi. I am having exact the same problem now. I use 2.4.0 version and I cant locate FFmpeg.
I have done instaliing step by step using the wiki instructions (https://manual.audacityteam.org/man/ins ... ndows.html) and it didn`t help .

What am I doing wrong? Here is my log.

... remains like this as long as my selection is smaller than the entire track. This behaviour doesn't change by converting the MKV file to WAV with ffmpeg before opening it in Audacity. With an "original" WAV file that was never converted from any other format, splitting works fine. What ...

You an expand the number of different filetypes Audacity will manage by installing the FFMpeg software.

Scroll down to optional downloads.

https://www.audacityteam.org/download/windows/

Koz

Because Audacity links to the FFmpeg dll, it requires a compatible version of FFmpeg. When a compatible version of FFmpeg is installed, Audacity will normally find it without requiring user interaction. See this page in the manual for obtaining ...

I am using audacity 2.3.3. When I go to edit preferences I get the FFmpeg library not found dialog. So I click on the FFmpeg Library Locate button and I get the "Audacity needs the file 'avformat-55.dll' to import and export audio via FFmpeg" message. ...

... AAC (MP4/M4A). I checked it with MediaInfo . Change the name to .AAC. Then if you haven't done so already, you'll need to install the optional FFmpeg import/export library so that Audacity can open it. Download & run ffmpeg-win-2.2.2.exe to install it.