What this tool does
The DropZap MP3 converter takes a video file you already have on your device and pulls out just the audio track, saving it as a standard MP3 file. The video stays untouched on your device — you get an MP3 alongside it. This is the same job a desktop tool like FFmpeg or Audacity does, but in your browser with a single click, with no install and no command line.
Supported input formats
- MP4 — the most common format on the web. TikTok, Instagram, YouTube, and screen recorder exports all save as MP4.
- MKV — common for higher-quality archives, ripped media, and some recording software (OBS Studio).
- AVI — older Windows-era container, still produced by some legacy video tools.
- MOV — Apple QuickTime container; iPhone screen recordings and Mac exports default to MOV.
- WEBM — Google's open-source container, common for Chrome screen recorders and YouTube downloads.
- FLV / WMV — older formats kept around for compatibility with archived files.
128 kbps vs 320 kbps — which to pick
The bitrate determines audio quality and file size. Both options extract the same source audio; the difference is how aggressively the MP3 codec compresses it.
- 128 kbps — about 1 MB per minute. Indistinguishable from the source for podcasts, voice content, and casual music listening on phone speakers or earbuds. The default for streaming services and the right pick if you'll be sharing the file or uploading it elsewhere.
- 320 kbps — about 2.5 MB per minute. The maximum MP3 quality. Pick this for music you'll keep long-term, audio you'll edit further, or content you'll listen to on studio-quality headphones. The quality difference vs the source is essentially zero.
How it works on each device
iPhone (iOS 16+)
Tap the upload button, choose a video from Photos or Files, and the MP3 downloads to your iOS Files app under On My iPhone > Downloads. From there you can long-press the file and choose "Save to Music" to add it to your Apple Music library, or share it via AirDrop, Messages, or any app that accepts audio.
Android (Chrome, Samsung Internet, Firefox)
Tap upload, pick a video from your Gallery or file manager, and the MP3 lands in /Downloads within seconds of conversion finishing. Android's MediaStore service automatically scans the file, so it appears in any music player app (Spotify local files, Samsung Music, Poweramp, VLC) within a few seconds.
Windows / Mac / Linux desktop
On desktop, the converted MP3 saves to your browser's default Downloads folder. The whole flow takes about as long as the file takes to upload — the conversion itself is faster than real-time on our processing servers.
Common use cases
- Podcast editing — extracting the audio track from a video recording so you can edit it in Audacity, GarageBand, or any audio-only editor.
- Music extraction — pulling the soundtrack from a concert clip, music video, or live performance for offline listening.
- Voice memos — converting a video voice note to an audio-only file that's a fraction of the size and easier to share.
- Lecture / class recordings — turning a recorded video lecture into an MP3 you can listen to on a commute without draining your battery.
- Audio books and interviews — extracting just the audio for distraction-free listening or transcription.
Privacy
Files are uploaded to a temporary processing server, converted, and permanently deleted within 30 minutes. We don't store, log, share, or analyze the contents of any uploaded file. The conversion happens in an isolated worker — no other process, including DropZap's own analytics, sees the file content.
If you'd prefer to keep the entire conversion local on your machine, FFmpeg does exactly the same job offline:
ffmpeg -i input.mp4 -q:a 0 output.mp3FFmpeg is free and open-source, available for Windows, Mac, and Linux. The DropZap converter is just the same operation in a browser-friendly wrapper for users who don't want to install anything.