MP4 to MP3 Converter is a video converter that helps you extract audio from your video file and save it in MP3 format. It is fast and easy to use. It also has a built-in trimmer to help you trim the audio file. You can use it to convert videos and audio from your phone or tablet.

This application has been designed to make it easy to use. The first step is to select the video file you want to convert. Next, you need to select the audio file you want to add to the video. After that, you just need to click the "Convert" button and wait for the conversion process to be completed.