ScreenREC

Product Introduction

1. Definition: ScreenREC is an open-source, client-side browser-based screen recording tool (technical category: WebRTC media capture application) enabling local recording of screen activity, webcam feeds, and audio without installations.
2. Core Value Proposition: It eliminates friction in screen recording for professionals by combining zero-install access, privacy-first local processing, and studio-grade export capabilities—solving accessibility and security gaps in traditional recording software.

Main Features

1. Browser-Based Recording Engine:

   • How it works: Leverages WebRTC and MediaStream APIs to capture screen/window/tab content alongside camera/microphone inputs. Uses MediaRecorder API for client-side encoding, avoiding cloud processing.
   • Technologies: WebAssembly for performance-critical operations, IndexedDB for temporary local storage during recording.

2. Multi-Source Capture Modes:

   • How it works: Users toggle between screen-only, camera-only, or picture-in-picture (PIP) modes. PIP dynamically layers camera feed over screen content via CSS positioning and canvas compositing.
   • Flexibility: Adjustable camera frame positioning/sizing during recording.

3. Lossless Export Pipeline:

   • How it works: Recordings process locally via FFmpeg.wasm for format conversion. Supports 720p/1080p/4K resolution exports to MP4 (H.264), WebM (VP9), or GIF with configurable bitrates.
   • Quality Control: Adaptive bitrate scaling maintains clarity during high-motion captures.

4. Privacy Architecture:

   • How it works: All data remains on-device; no server uploads. Implements permissionless design—recordings auto-delete from browser cache post-export unless manually saved.
   • Security: Auditable open-source code (GitHub) verifies zero telemetry or tracking.

Problems Solved

1. Pain Point: Eliminates bloated installs, account mandates, and privacy risks of cloud-based alternatives (e.g., Loom, Camtasia). Solves "download fatigue" for quick recordings.
2. Target Audience:
   • Developers: Bug report replication with screen/camera context.
   • Educators: Browser-based tutorial creation.
   • Remote Teams: Async standups/demos without signup barriers.
   • Support Teams: Visual issue documentation.
3. Use Cases:
   • Recording encrypted app demos (sensitive data never leaves device).
   • Creating GDPR-compliant training materials.
   • Quick-response browser bug documentation.

Unique Advantages

1. Differentiation:
   • Vs. OBS Studio: No 200MB+ download; browser-native.
   • Vs. Cloud Tools: No upload delays, storage fees, or privacy waivers.
   • Vs. Extensions: Lower CPU overhead; no store review dependencies.
2. Key Innovation: Client-side FFmpeg.wasm processing enables format conversion without servers—unique among web-based recorders.

Frequently Asked Questions (FAQ)

1. Is ScreenREC compatible with all operating systems?
   Yes—it runs on any device with Chrome, Edge, or Firefox (OS-agnostic via browser support for WebRTC/MediaRecorder APIs).

2. How does ScreenREC achieve 4K recording without lag?
   Hardware-accelerated encoding via WebCodecs API and GPU offloading maintains performance during high-resolution captures.

3. Can I record audio from applications, not just microphones?
   Limited to system audio in Chromium browsers (via experimental flags) and microphone input universally.

4. Why choose WebM over MP4 exports?
   WebM (VP9) offers smaller file sizes for web embeds; MP4 (H.264) ensures compatibility with legacy video editors.

5. Does ScreenREC work offline after initial access?
   Yes—service worker caching enables full offline functionality after first visit.