Limelight
What Is Async Video?
Async video — short for asynchronous video — is pre-recorded video shared for others to watch on their own schedule, used as an alternative to real-time meetings and calls.
Asynchronous video communication means sending a recorded video message instead of scheduling a live meeting. The sender records when it suits them; the recipient watches when it suits them — no calendar coordination, no time zone alignment required. The category gained mainstream traction with tools like Loom, which made it trivially easy to record a screen video and share a link. But async video as a concept predates these tools: any recorded screen demo sent via email or Slack is async video. The key property is temporal decoupling — creation and consumption happen at different times.
Async video works especially well for use cases where a live meeting would be overkill: walking a colleague through a process, explaining a design decision, giving a code review tour, sharing a bug reproduction, or delivering a product demo to a prospect without scheduling a call. Research consistently shows that video comprehension exceeds plain text for complex or visual subjects. Async video also creates a replayable artifact — the recipient can pause, rewind, and re-watch, which is impossible in a live call. The sender can also edit before sending, which typically makes the communication tighter than an improvised live walkthrough.
The production quality of async videos matters more than people expect. Viewers are watching alone, without the social context of a live meeting, and will stop watching if the content is hard to follow. A well-produced async video makes the cursor easy to track, shows what keys were pressed, and zooms in so UI elements are legible rather than tiny. Limelight produces async-ready videos: auto-zoom on every click, on-screen keystrokes, cursor spotlight, and a built-in trim editor keep the clip tight. Export to mp4 gives a file you can attach or link directly without needing a cloud service.
Why Limelight
- ▸Async video is pre-recorded video watched at the recipient's convenience — no scheduling, no live meeting required.
- ▸Best for: process walkthroughs, design reviews, bug reproductions, code reviews, and product demos.
- ▸Creates a replayable artifact — recipients can pause, rewind, and re-watch, unlike a live call.
- ▸Production quality matters more in async video: auto-zoom, keystrokes, and cursor spotlight keep viewers engaged.
Cursor spotlight free · from $2.99/mo or $34 lifetime · macOS 14+
Or get Pro — from $2.99/mo · See how it works →
free to start, then go Pro from $2.99/mo or a $34 one-time lifetime license. macOS 14+, notarized by Apple.
FAQ
- What is the difference between async video and a video call?
- A video call is synchronous — both parties are live at the same time. Async video is pre-recorded and watched later. Async video is more efficient for one-directional information transfer (demos, walkthroughs, explanations) because no scheduling is needed and the content is replayable.
- Do I need a Loom account to send async videos?
- Loom is one platform for hosting and sharing async videos. Alternatively, you can record a video with any screen recorder, including Limelight, and share the mp4 file directly via email, Slack, Notion, or any file-sharing service — no third-party account required.
- How long should an async video be?
- Under three minutes is a good target for most internal async messages. For product demos, two to five minutes. Limelight's built-in speed ramp lets you accelerate slow sections without cutting content, keeping async videos concise.