Extract Audio from Video

Free Online Audio Extractor — Pull Audio from Any Video in Your Browser

iFixImg is a fully browser-based audio extractor that converts the audio track from any video file into a downloadable MP3 — without uploading anything to a remote server. Traditional web converters route your footage through third-party infrastructure, introducing latency, privacy risk, and arbitrary file-size restrictions. iFixImg eliminates all of that by running every step of the conversion directly on your own device. The moment you click Extract Audio, the work starts locally and your footage stays local.

The result is a clean, standard MP3 file that is immediately compatible with every media player, video editor, podcast platform, and audio production tool available today. It does not matter whether your source is a screen recording, a downloaded lecture, a social media clip, a recorded call, or a short film — the extractor handles it consistently and delivers the audio in seconds.

Who Uses a Video Audio Extractor?

iFixImg vs. Other Video to MP3 Converters

How the Browser-Based Engine Works

Clicking Extract Audio triggers iFixImg to load a compiled WebAssembly build of a professional media codec library into your browser tab. WebAssembly is a binary instruction format that modern browsers can run at speeds very close to native machine code, which means the encoding work executes on your own CPU rather than on any third-party server. The library reads your video file from browser memory, locates the embedded audio stream, and re-encodes it into a high-quality MP3 — entirely within your browser sandbox. When the process finishes, the output is handed back to you as a directly downloadable file. No data travels over the network at any point during extraction, so the privacy guarantee is absolute regardless of what is in your video.

Tips for the Best Audio Extraction Results

• Prefer MP4 or WebM source files: Both formats are natively supported by the browser engine and decode faster than older container formats like AVI or FLV, resulting in quicker and more reliable extraction overall.
• The engine downloads once, then caches: On your very first extraction, roughly 30 MB of WebAssembly engine data is fetched and stored in your browser cache. Every run after that skips the download entirely and works even without an internet connection.
• Device RAM is your only size constraint: Because the entire operation runs on your machine, there is no server-imposed file-size cap. A multi-gigabyte video processes exactly like a small clip — the only practical ceiling is the amount of free memory your device currently has available.
• MP3 output plays everywhere: The extracted audio is encoded using standard MP3 settings and opens natively on every desktop OS, mobile device, media player, editing application, and streaming or podcast publishing platform without requiring any further conversion.

Is the audio extractor completely free?

Yes — fully free with no hidden tiers. There are no per-file limits, no credit systems, no subscription prompts, and no account registration required at any point. You can run as many extractions as you need.

Are my videos private and secure?

Completely. iFixImg processes your video entirely inside your browser using a local WebAssembly engine. Your footage is never transmitted to any server, never stored in the cloud, and never seen by anyone other than you.

Why did the first extraction take longer to start?

On first use, the browser downloads and caches the WebAssembly processing engine, which is approximately 30 MB in size. This is a one-time step. All subsequent extractions bypass the download entirely and launch immediately, even without an internet connection.

What video formats are supported?

The tool accepts all major video containers including MP4, WebM, MOV, AVI, and MKV. As long as the file is a standard video format and contains an audio stream, the extractor will handle it without any manual conversion step beforehand.

What if the video has no audio?

If the source video contains no audio track at all, the extraction will still complete without errors, but the resulting MP3 file will be empty or near zero in size. The file size indicator shown after processing will confirm whether audio was found.

What is the output quality of the MP3?

Audio is encoded using a variable bit-rate setting tuned for high fidelity, producing output well-suited for voice recordings, interviews, podcasts, and general listening. The file size remains reasonable while the perceptible quality stays sharp.

Can I extract audio from a very large video file?

Yes. The tool has no server-side file-size restriction whatsoever. Processing is governed entirely by your device's available memory, so multi-gigabyte files work the same as small clips — just ensure your browser tab has enough RAM headroom.

Does it work on iPhone or Android?

Yes. The extractor runs in any modern mobile browser including Safari on iOS and Chrome on Android. The initial engine download benefits from a stable Wi-Fi connection, and extraction speed scales with your device's processor.

Can I use this to get audio from a video I recorded on my phone?

Yes. Transfer the video to your computer or open this page directly on your mobile browser, then upload the file as usual. The extractor handles footage from any camera or recording app without any special preparation.

Will the audio stay in sync if the video has multiple audio tracks?

The tool targets the primary audio stream embedded in the video container. Most standard video files — MP4, WebM, MOV — carry a single main audio track, and extraction is accurate and in sync. Files with multiple audio tracks will have the default track extracted.