Video Recording#

Use record to capture browser automation as a WebM video for debugging, CI evidence, product walkthroughs, or repro reports.

Basic workflow#

agent-browser open https://example.com
agent-browser record start ./demo.webm
agent-browser snapshot -i
agent-browser click @e1

agent-browser record stop

After launching a session, record start can also navigate immediately:

agent-browser open
agent-browser record start ./demo.webm https://example.com

If no URL is provided, recording starts from the current page. The recording context copies cookies from the active session.

Commands#

CommandDescription
record start <path.webm> [url]Start recording to a WebM file
record stopStop the active recording and save the file
record restart <path.webm> [url]Stop the current recording and immediately start another

CI evidence#

#!/bin/bash
set -e

cleanup() {
  agent-browser record stop 2>/dev/null || true
  agent-browser close 2>/dev/null || true
}
trap cleanup EXIT

agent-browser open https://app.example.com/login
agent-browser record start "./artifacts/login-flow.webm"
agent-browser snapshot -i
agent-browser fill @e1 "demo@example.com"
agent-browser fill @e2 "password"
agent-browser click @e3
agent-browser wait --url "**/dashboard"

Keep recordings as CI artifacts when browser failures are hard to diagnose from text output alone.

Human-readable demos#

Add small waits when the video is meant for a person to watch:

agent-browser open https://shop.example.com
agent-browser record start ./checkout.webm
agent-browser wait 500
agent-browser click @e4
agent-browser wait 500
agent-browser screenshot ./screenshots/cart.png
agent-browser record stop

Screenshots and videos work well together: screenshots capture precise still states, while the video shows timing, transitions, and unexpected overlays.

Output format#

PropertyValue
ContainerWebM
Common extension.webm
ViewportUses the active browser viewport settings
StateCopies cookies from the active session

Limitations#

  • Recording adds overhead to automation.
  • Long recordings can use significant disk space.
  • Use record stop before closing a session if you need the file flushed.
  • Some constrained headless environments may have codec or GPU limitations.