SOLIPSIUMAlpha

SOLIPSIUM Super resolution audio engine

Free audio tool

Extract the audio from your own video.

Your browser takes the sound out of your video and saves it as MP3 or WAV. Then Solipsium checks that sound for hum, noise and clipping.

Drop your own video here

The sound is taken out in your browser. The video is not uploaded.

MP4, MOV, M4V, WebM or MKV, up to 500 MB and 30 minutes.

Choose a video

How it works

From your video to a sound file.

Chrome, Edge, Firefox and Safari can read the sound of an MP4 video themselves, so taking it out needs no upload. The check that follows is a browser copy of the scan Solipsium's editor runs.

Choose your own video.

An MP4, MOV, M4V, WebM or MKV file from your phone or computer, up to 500 MB and 30 minutes of sound. This page is for your own videos: there is no box for a link.

Your browser takes the sound out.

It reads the video's first sound track at 48 kHz.

Save it as MP3 or WAV.

MP3 is made at 192 kbps unless you choose 128, 256 or 320. WAV is larger and adds no new compression.

See what the sound needs.

The quick check listens to the first five minutes for clipping, dropouts, hum, background noise and muffled sound. You can then hear its first 20 seconds repaired, with no account. Solipsium's free try is built for speech.

Questions

Before you choose a video.

Is my video uploaded?

No. Your browser takes the sound out and saves it straight to your device. Only if you press Repair the first 20 seconds does any sound go to Solipsium, never the video, and Solipsium keeps only its first 20 seconds and deletes them within an hour.

How do I extract audio from a video on an iPhone?

Open this page in Safari, tap Choose a video and pick it from your photos or Files, then save the sound as MP3 or WAV. Safari 26 and earlier cannot read the sound of the MOV videos an iPhone records, and other iPhone browsers mostly use Safari's engine. On those, open the video on a computer in Chrome, Edge or Firefox, or try again after updating to iOS 27.

Which sound track do I get?

The first one. Browsers read only a video's first sound track, so a second language or a commentary track is not taken out here. A video with surround sound is saved as stereo.

Is the sound quality kept?

WAV keeps the sound as your browser decoded it, at 48 kHz and 16 bits, with no new compression; a track recorded at another rate, such as 44.1 kHz, is resampled to 48 kHz, and surround is folded to stereo. MP3 compresses it again and loses a little detail; 320 kbps loses the least. Nothing is cleaned or repaired: the free try repairs a separate 20-second copy and never changes the file you save here.

How long a video can it take?

Up to 500 MB and 30 minutes of sound, which your browser holds in its memory while you save it. A long or large video fits better in the editor: with a free account it imports MP4, MOV, MKV and WebM videos with mono or stereo sound, up to 1 GB and 30 minutes.

Why can my browser not read this video?

Chrome, Edge, Firefox and Safari read the sound of MP4 and WebM videos. MOV and M4V open in Chrome, Edge, Firefox and Safari 27; Safari 26 and earlier cannot read the sound of a MOV. MKV opens in Chrome when its sound is AAC, Opus, Vorbis, MP3 or FLAC, and not when it is AC-3 or DTS. A video with no sound track has nothing to take out. If your browser cannot read the video, try Chrome on a computer; on an iPhone, most browsers use Safari's engine.

Can I fix the sound and keep the picture?

Yes, in Solipsium's editor, which needs a free account and takes MP4, MOV, MKV and WebM videos with mono or stereo sound. Import the video there and repair its sound. A video export keeps the original picture with your repaired audio track and leaves out any other audio tracks and subtitles.

Make an old recording easier to hear.

Solipsium works on voicemails, voice memos, answering machine tapes and camcorder audio.

Try it on a recording

The check and the 20-second try need no account.