Screen Recorder Tutorial
Detailed guide, best practices, and FAQ
Use Cases
The Screen Recorder is useful for software tutorials, bug reproduction videos, online meeting recording, gaming highlights, web demos, etc. When you need to record your screen in the browser without installing OBS or Bandicam, this tool gets you started instantly.
Features
- Custom bitrate: 1 Mbps (smooth) to 5 Mbps (HD) presets, or custom 0.1-50 Mbps
- Custom resolution: 720p / 1080p / 1440p / Native
- Custom frame rate: 10-240 FPS slider (actual FPS limited by display and capture source)
- Video format: WebM (VP9/VP8) or MP4 (H.264), unavailable options auto-filtered
- Audio source: None / System / Microphone / System + Mic
- Live stats: duration, file size, pause/resume
- Local processing: all data stays in browser; download directly when done
Examples
Example 1: Scenario 1: Software tutorial — 1080p + 30 FPS + MP4 + Mic, narrate while operating, download and share with colleagues.
Example 2: Scenario 2: Bug repro — 720p + 15 FPS + WebM + System Audio, small file size for ticket systems.
Example 3: Scenario 3: Gaming — 1080p + 60 FPS + WebM (VP9) + System Audio, capture highlights at high frame rate.
Best Practices
- For tutorials use 1080p + 30 FPS + 2.5 Mbps for balanced quality and size
- Close unrelated apps before recording to reduce frame drops
- System audio requires Chrome/Edge with "Entire Screen" (not supported on macOS)
- For long recordings, stop and save every 30 minutes to avoid browser memory pressure
- WebM plays natively in Chrome/Firefox/Edge; pick MP4 in format selector or convert via ffmpeg
- FPS higher than display refresh rate (typically 60/120/144 Hz) is wasteful — no benefit
FAQ
Why can't macOS capture system audio?
macOS CoreAudio does not expose system audio capture to browsers — a system limitation. Use a microphone or native tools like OBS.
Is the output MP4 or WebM?
You can choose in the "Video Format" dropdown. Chrome/Edge usually support both; Safari mainly supports MP4. WebM is smaller and higher quality; MP4 has wider compatibility.
Can I record a specific window?
Yes. After clicking "Start Recording", the browser prompts you to choose entire screen, application window, or browser tab.
Is there a recording length limit?
Theoretically no, but browser memory grows with duration; recommend keeping single sessions under 1 hour.
Why can't I get 240 FPS?
Actual FPS is limited by display refresh rate (typically 60/120/144 Hz) and capture source. Even if the slider is set to 240, output may only be 30/60. Stick to 60 or 120 based on your display.