Choose your own video.
An MP4 or WebM file up to 1920 x 1080 either way up and 30 minutes long. This page is for your own videos: there is no box for a link.
SOLIPSIUM Super resolution audio engine
Free video tool
Enlarge and sharpen your own video.
Your browser doubles your video's width and height and sharpens it on your own graphics chip. The video is not uploaded, and there is no watermark and no account. The sound is copied as it is, or converted where MP4 players could not play it, and the page says which.
Drop your own video here
It is enlarged in your browser. The video is not uploaded.
MP4 or WebM, up to 1920 x 1080, 60 frames a second and 30 minutes.
Enlarge your video
Picture
Detail
Sharpen edges
Adds contrast along edges after the enlargement. It can draw bright or dark lines along strong edges and make grain more visible, so preview a frame before you choose it.
Keep grain
Off smooths grain and noise away as it enlarges. Some and Most keep more of the picture's fine texture and grain. Preview a frame to compare.
Size
Strong, slow draws four times the width and height, then shrinks that to 2x. 4x keeps all of it, for videos up to 960 x 540 either way up, so the new file is at most 3840 x 2160.
Enhancement invents detail that was not filmed, and an enhanced video is not evidence of what was recorded.
Your enlarged video
Your first 20 seconds
After signing up, import the video into the editor: it repairs the whole soundtrack and exports the video with its picture kept.
What Solipsium hears
Make a free account to repair the whole soundtrack
Then import the video into the editor. Scans and short repairs are free.
How it works
From your video to a larger one.
Chrome and Edge can run a neural network on your graphics chip and write video themselves, so enlarging needs no upload. The quick check that follows is a browser copy of the scan Solipsium's editor runs.
Your graphics chip enlarges each frame.
A neural network doubles the width and height of every frame and sharpens edges and fine texture. Preview one frame first to compare it with a plain enlargement.
The sound is copied.
The new MP4 keeps the original sound packet for packet, with no new compression. Sound MP4 players could not play that way (Vorbis, or old u-law or 8-bit sound) is converted instead. The page says when the sound was converted, and when it could not be kept.
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 reads the video, your graphics chip enlarges each frame, and the new file is written on your device. Only if you press Repair the first 20 seconds does any sound go to Solipsium, never the picture, and Solipsium keeps only its first 20 seconds and deletes them within an hour.
What does enhancing do to a video?
It doubles the width and height of every frame, or with Strong, slow's 4x makes a small video four times as wide and tall, and sharpens the picture with a neural network. Enhancement invents detail that was not filmed, and an enhanced video is not evidence of what was recorded. Faces, writing and number plates can come out looking unlike the real thing.
Which browsers can enlarge a video?
Chrome and Edge on a desktop or laptop whose graphics chip supports WebGPU. A browser that cannot do it says so as soon as this page opens, and can still check the sound.
How large a video can it take?
Up to 1920 x 1080 either way up, 60 frames a second and 30 minutes, in ordinary 8-bit colour. Doubling anything larger is more than a browser's video encoder takes. In Chrome and Edge the new video is written straight into a file you choose; a browser that cannot do that keeps it in its storage for this site, or in its memory, which holds about 200 MB.
What do Filmed, Animation and Detail mean?
Filmed uses networks tuned on filmed clips. Quick, Balanced and Most detail are three small networks; a larger one takes longer and needs more of your graphics chip's memory. Strong, slow runs Real-ESRGAN's general network, which is far larger. It takes much longer, needs a strong graphics card and takes videos up to 1280 x 720 either way up. With Strong, slow you can also choose how much grain to keep, and for videos up to 960 x 540 either way up it can make the picture four times as wide and tall. Animation uses one network, tuned on drawn pictures with clean lines.
What happens to the sound?
It is copied into the new video as it is, unless MP4 players could not play it that way: then it is converted, and the page says so. Solipsium then checks its first five minutes in your browser and offers to repair the first 20 seconds, free and with no account. With a free account, the editor repairs the whole soundtrack and exports the video with its picture kept, for videos up to 1 GB and 30 minutes. An enlarged copy can pass that 1 GB, so repair the sound in the editor first, then enlarge the video it exports here.
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.