Here is a sample code that extracts the audio from a mp4 file and saves it into mp3, using the moviepy library. Opensesame-plugin-media_player_mpy (0.1.6) - Media player plugin for OpenSesame, based on MoviePy Mediadecoder (0.1.5) - Moviepy based media decoding library Livingbio-moviepy (0.2.2.11.3) - Video editing with Python Moviepy-wumii (0.2.3.6.1) - Video editing with Python Moviepy (1.0.1) - Video editing with Python The built in virtual environment supports comes with Python 3 suffices most use cases.)Īctivate activate.fish easy_install-3.6 pip3 pythonĪctivate.csh easy_install pip pip3.6 python3 (note: virtual environment can be activated in many ways. Installing third party packages in a virtual environment makes it much easier and cleaner to handle the dependencies than installing in the user environment. I installed the moviepy packages inside a virtual environment since I didn’t have any plans to use this package outside of this use case. I chose to give a try with moviepy library mainly because of its super simple interfaces. That way I can script the process and can have more control over how files are handled and named. So I looked out for a command line tool or a library that I can simply use inside a Python program. Also those apps are usually heavy weight and comes with boat load of stuff that I probably will never use. But I did want to download a third party app just for a rare use.

There are indeed some apps available in the App Store to extract the audio stream out of the mp4 videos. They do play well in phones but I could not use them as is because of few reasons: 1) they take considerable storage space 2) does not play well in the background, so can’t listen during 3) distracting while driving and so on. I had a bunch of video files of a lecture that I wanted to listen offline while doing errands or driving.

Ffmpeg mp4 to mp3 python