Help With Importing mp4

So I need to edit the audio in an mp4 file and at first I didn’t have the ffmpeg files needed for more advanced files that audacity needed, so I went on youtube to figure out how to do it followed multiple videos step by step through installing. Even after the ffmpeg library autodetects the dll files it needs I still get the “mp4 is an advanced audio coding file audacity can not open” error. I’ve reinstalled audacity and even reinstalled the needed libraries needed but I still get this error.

We at Aydacity don’t make “how-to” videos (they get out of date too quickly) - and most you find on the internet can be wildly inaccurate.

Instead follow the instruction from this page in the Audacity Manual:


I think you mean …

Download BOTH the LAME and FFmpeg libraries.
Extract the files.
I manually put mine into this folder:
C:\Program Files (x86)\Audacity\Plug-Ins

Start Audacity…

Edit → Preferences → Libraries → LOCATE

For BOTH MP3 and FFmpeg click Locate → Browse → (the needed file shows up in the box but that is deceiving) → Pick Browse and manually browse to the folder where you put the plugins (.dll files).

I moved all mine to:

C:\Program Files (x86)\Audacity\Plug-Ins

Do this for BOTH. Restart Audacity and it should work just fine.

I just went through this and now mine is working perfectly.

Instructions for installing FFmpeg are provided in the Audacity manual.

While other instructions “may” work (or may not), it is always highly recommended to follow the proper instructions as given in the official manual.