Replace audio with appropriate filename referring to your audio file before and after this operation. The following command will perform conversion from mp4 to wav format: 1įfmpeg -i audio.mp4 -ab 160k -ac 2 -ar 44100 -vn audio.wav ffmpeg library allows converting audio file formats. However, since my video audio file was an mp4, I needed to first convert the file format. Convert Audio from MP4 to WAVįor my specific use case, I needed an audio file in wav and mp3 formats. If that happens, double check your command then try another video id, or use an audio file you already have. If the video has no audio, or the audio is not accessible, this command will fail. The output of this command, when successful, is a mp4 audio file saved at the specified location.

out_filename - enter a name for the audio file, for example 'audio.mp4'.

out_directory - enter local directory path where the file should be saved, for example 'C:/Documents'.your-video-id-here - enter the youtube video id you want to work with.In the code sample above, replace the following: download(output_path= 'out_directory', filename= 'out_filename') filter(file_extension= 'mp4', only_audio= True) Otherwise, you can obtaining your audio sample from Youtube using pytube library. If you already have an audio file you want to work with, feel free to skip this first step. Pip install pytube imageio imageio-ffmpeg PrerequisitesĮxecute this command to ensure you have all necessary modules installed. To accomplish this, I used pytube to download the audio file, then ffmpeg library to converted the file to appropriate format, and finally ffmpeg to cut the audio file length - all using a command line! These are the commands I will discuss today. I wanted to test specific audio files from youtube, then upload them to the speech-to-text app for transcription.

In my own situation, I wanted to experiment with some speech-to-text services, to test them for quality. Working with these media formats requires a few extra steps if you do not have suitable 3rd party software pre-installed, or perhaps you just prefer a command line approach for these operations? Either way, Python is a great tool for this job and next I will show you how. When working on experimental things, you might find yourself in a situation where you are faced with raw audio or video and need to modify it.

Ffmpeg mp4 to mp3 python