Choose a song and watch it move as spectrum bars, a waveform, a circular spectrum or pulsing particles, in your colors or over your cover art. Preview it, then export a 1280×720 (16:9), 720×1280 (9:16) or 1080×1080 (1:1) video. It runs in your browser: no signup, and your audio never uploads.
Match the shape to where the video will play; the preview on the page shows exactly what you will get. All three sizes are recorded at 30 frames per second. In 9:16 the title and the main shapes sit clear of the top bar and caption area that TikTok, Reels and Shorts draw over the video.
| Shape | Size | Good for |
|---|---|---|
| 16:9 | 1280×720 | YouTube videos |
| 9:16 | 720×1280 | YouTube Shorts, TikTok and Instagram Reels (post an MP4 to TikTok and Instagram) |
| 1:1 | 1080×1080 | Instagram feed, X and Facebook (MP4) |
It reads your song's frequencies and waveform as it plays and draws them as moving shapes: spectrum bars, an oscilloscope-style waveform, a circular spectrum, or a pulse with particles. You pick the colors and can add a background image, a title and an artist name. Then it records the result into a video file.
It's free, with no signup and no watermark. Everything happens in your browser: the song and any image you add stay on your device and are never uploaded to Solmi.
MP4 where your browser can record it (current Safari, and recent Chrome and Edge), otherwise WebM (Firefox, for example). The download button shows which one you got. Sizes are 1280×720 for 16:9, 720×1280 for 9:16 and 1080×1080 for 1:1, at 30 frames per second.
About as long as the song. The video is recorded in real time while the track plays through the visualizer, so a 3-minute song takes about 3 minutes. Keep the tab open until it finishes; you can cancel at any time.
YouTube (Shorts included) accepts both MP4 and WebM. For TikTok and Instagram, export an MP4 with Safari or a recent Chrome or Edge; if your browser gives you WebM, convert it to MP4 before posting. Use 9:16 for Shorts, TikTok and Reels, 1:1 for the Instagram feed and 16:9 for regular YouTube videos.
Yes. Add a background image and it fills the frame (cropped to the size you picked), slightly darkened so the visualizer and text stay readable on top.
No. It exports the whole song, while a Canvas is a 3 to 8 second vertical loop. To animate your cover art into a Canvas, use Solmi's Spotify Canvas maker.
No, it draws shapes from the audio. For a music video with characters, scenes and lip-sync, use Solmi's AI music video generator, which needs a free account.