How do I convert an MP4 video to MP3 on iPhone?

Open an accessible MP4 file in Vid2Audio, select MP3 as the audio output and adjust the available settings before exporting. If the video is stored in a cloud photo library or folder, download it first. Listen to the saved MP3 before sharing or deleting anything; a silent source video cannot produce an audio recording that was never captured.

Steps to follow

1. Download the complete source video and play it first to confirm that the sound you need is actually present.
2. Select MP3 output in Vid2Audio, check the chosen segment and use settings suitable for the intended player.
3. Export to a location you can find, then open the saved MP3 independently and inspect its duration.

Check the saved audio before sharing

Compare the start and end with the source, especially when the video was downloaded from cloud storage. A file extension alone does not prove that a conversion completed correctly. Retain the video until you have verified both the content and the audio quality.