From iPhone video to audio
Videos recorded on an iPhone or exported from a Mac are usually MOV files. When you only need the sound, for example a speech at a wedding, a song at a concert or a voice message to share, MP3 is the easiest format to send and play.
The converter reads the AAC audio in the MOV, decodes it and encodes MP3 at 192 kbit/s. Large videos are fine because nothing is uploaded; your phone video stays on your device.
On the phone itself
The converter also works in Safari and Chrome on a phone. Choose the video from your library, wait a few seconds and save the MP3 to your files.
About MOV
MOV is the video format of iPhones and Macs. The audio inside is usually AAC.
About MP3
MP3 is the most widely supported audio format: every phone, car radio, speaker and music app plays it.