To turn a video into an audio file on your iPhone, you'll need to download a third-party app from the App Store.
You can convert a video to an MP3 file using Adobe Media Encoder, which can help save you storage space on your device.
Maybe it's a video of a beautiful speech that was recorded at an awful angle. Or maybe it's a video of your kids singing a song that you want to be able to play while driving in the car. Whatever your ...