LimePulse documentation

LimePulse is browser-based software that turns music, podcasts and cover art into video: audio-reactive music visualizers, Spotify Canvas loops, Apple Music motion art, video podcasts and live visuals.

How to sign up for LimePulse, what you can do for free without a card, and what subscribing unlocks. Email or Google, no install, no credit card to start.

Seven tools, one account. Which one to open for a single, an album, a Spotify Canvas, Apple Music motion art, a podcast episode or a live show.

The whole path from signing up to a finished MP4: upload a track and cover art, pick a template, tune it, render and download. No editing experience needed.

Which audio and image files LimePulse accepts, how long a track can be, what makes good cover art for a moving video, and how uploads are reused across projects.

Upload a track and cover art, pick from 42 audio-reactive templates, and render a full-length music video in 4K at 60 fps with no watermark.

Compose a music video from an empty frame: 16 bar and wave looks, 15 props, text, images, lyrics and backgrounds, rendered in 4K at 60 fps.

Build the short vertical loop that plays behind your track on Spotify. Seamless by construction, sized and timed to Spotify's own guidelines, exported ready to upload.

Make animated album art for Apple Music. The same loop editor at Apple's square and portrait frames, exported at the sizes Apple asks for.

Upload an episode and get a video podcast. Automatic speaker detection finds up to 4 voices, seats each host on an animated stage, and the visuals move with whoever is talking.

Build a scene and put it on a screen. Stage reacts to a microphone or a line-in in real time, for DJ sets, gigs and venues. Nothing is rendered.

The 42 templates and 16 visualizer looks, what kind of music each suits, and the difference between a template and a look.

The background modes every studio shares: a solid colour, an ambient gradient, your artwork blurred behind the scene, your own photo or a video.

Add titles, artist names and any other text to a video, across 200 fonts, with size, weight, alignment, colour and effects.

Place logos, photos and extra artwork on the frame, with corner radius, shadow and reflection, and keep transparency intact.

The 15 objects you can place in a scene, from a spinning vinyl and a cassette to VU meters, a neon sign, subscribe animations and a QR code.

Make a lyric video by tapping the words in time, or let AI sync them for you in any language. Four designs, full control over type and motion.

Eight animated subscribe and follow prompts for YouTube and Instagram, with your channel name, handle and counts, timed to appear when you choose.

Put a scannable QR code on a music video in five styles, with timing controls, and the size rules that decide whether a phone can actually read it from a couch.

How large a QR code has to be in a video for a phone to scan it, how long to leave it up, where to put it, and why a code on a TV needs different numbers.

How LimePulse finds who is talking in a podcast episode, seats up to 4 speakers, and what to do when an intro jingle is mistaken for a person.

How to get sound into audio reactive visuals: a line feed from the DJ mixer, a USB interface, a microphone in the room, or a loopback of what the machine is playing.

The three ways visuals follow a DJ: tapping tempo by hand, a link protocol between machines, or detecting the beat from the audio itself. What each costs you.

How a DJ runs their own visuals: what to prepare before the night, what to leave running, and how to make a screen react to the set without anyone operating it.

What a browser can and cannot do as VJ software: audio input, full screen output to a second display, and where installed software is still the right answer.

Second displays, extend rather than mirror, resolution and shape, cable runs, and what to do when the house projector is the only screen you get.

How to put reactive visuals into a stream: capturing the scene as a source, which audio the visuals should listen to, and what to watch on the machine.

What happens when you press Render, how long it takes, what to do if it fails, and where the finished MP4 ends up.

Every size LimePulse exports, and which platform each one is for. Landscape, vertical and square video, Spotify Canvas loops, Apple Music motion artwork and video podcasts.

The exact Spotify Canvas requirements: 9:16 vertical, 3 to 8 seconds, MP4 or JPG. Why Spotify's own pixel wording contradicts itself, what size actually uploads, and why Canvas uploads fail.

The real requirements for animated album art on Apple Music: 2048 x 2732 and 3840 x 3840, both files required, 8 to 35 seconds, and why a 60 fps export is rejected.

You cannot upload motion artwork to Apple Music yourself. Which distributors deliver it, what DistroKid and TuneCore publish, and the rules that get a file rejected.

Animated album covers missing on Apple Music: the listener settings that switch them off, and the delivery mistakes that stop an artist's motion artwork from ever appearing.

YouTube's recommended resolutions and aspect ratios, what to upload for a music video, the upload limits, and why a 4K upload looks better even on a 1080p screen.

What makes a video a Short, the 3 minute limit, the 1080p upload cap, and the date rule that catches musicians on an Official Artist Channel.

The exact end screen rules: the last 5 to 20 seconds, four elements at 16:9, a 25 second minimum video length, five cards, and where end screens never show.

What YouTube's reused and inauthentic content policies actually say, why a visualizer of your own music is not the problem, and what genuinely puts monetization at risk.

The vertical size to export for TikTok, Instagram Reels and YouTube Shorts, how long a clip can be on each, and how to cut a vertical version of a song you have already made.

What the Creator plan includes, what is free, and what $9.99 a month or $99.99 a year covers across all seven studios.

How billing works, where to find invoices, how to change a card, how to switch between monthly and yearly, and what happens when you cancel.

Where projects, rendered videos, audio, photos and video uploads live, how long renders are kept, and how to find things again.

Changing your name, email address and password, and permanently deleting your account and everything in it.

Send a finished render straight to your YouTube channel: connecting the account, setting the title, description, tags and visibility, and what stays under your control.

What a podcast video has to be for YouTube and Spotify: sizes, frame rates and length limits, why an audio file alone will not upload, and what a static-image episode really is.

The questions people ask most: what it costs, whether there is a watermark, what you can upload, who owns the videos, and whether it works on your machine.

What to do when a render fails, an upload will not go through, the preview stutters or a finished video does not look the way you expected.

Plain definitions of the words that come up: audio-reactive, spectrum, waveform, visualizer, Canvas, motion artwork, audiogram, loop, safe zone and more.