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Ubify Media & Design Operations
UI/UX & DIGITAL MEDIA SPECIALISTS
About This Tool
The Screen Recorder captures high-definition video of your desktop monitor, individual application windows, or browser tabs using your web browser's native Display Media API.
### Capture Architecture & Recording Pipeline The recorder operates entirely within client-side browser APIs: - Display Media Stream: Requests user screen capture permission via `navigator.mediaDevices.getDisplayMedia({ video: true, audio: true })`. - In-Memory Chunk Buffering: Passes active media streams into `MediaRecorder`, collecting data segments as discrete chunks during recording. - Output Format & Encoding: When recording ends, the component compiles buffered frames into a standard `video/webm` Blob and generates a local object URL for instant review and download. - Local Resource Cleanup: Closes all active video and audio media tracks upon session termination to release hardware resources.
### Note on Video File Format & Compatibility The browser's native MediaRecorder API outputs standardized WebM video streams. WebM files play natively in modern web browsers (Chrome, Edge, Firefox, Safari) and can be imported into video editors or converted into MP4 and animated GIF formats.
### Worked Example - Capture Selection: Selected a Chrome browser tab displaying a live web application demo. - Recording Duration: 45 seconds of continuous navigation with tab audio enabled. - Resulting Artifact: Compiled in client memory as a `video/webm` file (~8.5 MB) ready for playback or local download.
### Private Client-Side Processing Screen capture video frames and system audio never touch an external server or cloud processing pipeline. All encoding happens directly on your device inside browser memory.
How to Use
- 1
Click the "Start Screen Recording" button.
- 2
Select whether to capture your Entire Screen, an Application Window, or a specific Browser Tab in the browser security prompt.
- 3
Record your presentation, code walkthrough, or UI interaction.
- 4
Click "Stop Recording" to immediately generate and download your WebM video file.
Frequently Asked Questions
Can I record system audio along with my screen?
Yes. When selecting a browser tab or entire screen in Chromium-based browsers, check the "Share audio" checkbox in the permission dialog.
Why does the tool save recordings as WebM instead of MP4?
Modern web browsers natively encode real-time screen captures using the VP8/VP9 WebM format via the MediaRecorder API without requiring heavy external codecs.
Are my recorded videos uploaded to Ubify servers?
No. The capture pipeline runs 100% in client-side JavaScript and video blobs exist solely in local browser memory.