To convert a YouTube video to the MP3 format, use the free version of Any Video Converter to download the video by copying its Web address, add the downloaded file to the main window, select the MP3 format, and start the conversion process. If necessary, modify the audio settings of the output file before starting the conversion.What is MP3 and MP4?
The most fundamental difference between MP3 and MP4 is the type of data they store. MP3 files can only be used for audio, whereas MP4 files can store audio, video, still images, subtitles, and text. In technical terms, MP3 is an “audio coding” format while MP4 is a “digital multimedia container” format.