Guide · 5 min read
How to Convert MP4 to MP3
Extract audio from video files you own: formats, bitrates, quality expectations and the honest limits of browser conversion.
Last updated: 2026-09-29
Tools for this guide
Use files you have the rights to
The legitimate uses are your own recordings: lectures you filmed, meetings you recorded, voice memos saved as video, music you produced. If you didn't create it and don't have permission, don't convert it.
Pick the output
MP4 and WebM inputs work in virtually every browser; MOV works where the browser supports it. If a file is rejected, re-export it as MP4 (H.264 + AAC) — the most compatible combination in existence.
Choose MP3 for compatibility and small size, WAV when you plan to edit further. Expect roughly 1–2 MB per minute at 192 kbps.
Convert locally
Drop the file into the Video to MP3 tool, pick a bitrate, and download the result. Decoding and encoding happen in your tab — a 500 MB video never touches a server, which is also why very long files depend on your device's memory.
Frequently asked questions
Can I convert YouTube videos with this?
No. Gargloo's tool processes only video files you already have and are authorized to use. It cannot download from YouTube or streaming services, by design.
Which bitrate should I choose?
192 kbps is the sweet spot for speech and general listening. 128 kbps saves space for voice memos; 256 kbps preserves more detail for music. Nothing restores quality lost in the source.