siddharthvaddem/openscreen
Openscreen
OpenScreen is screen recording and editing software used to capture screen video and audio with an integrated timeline for trimming, cropping, and playback adjustments. It functions as a comprehensive system for recording, annotating, and exporting audio-visual content.
The project includes a dynamic zoom editor for applying manual or cursor-following zooms with adjustable depth and easing. It features a local caption generator that uses on-device transcription to create voiceover captions without uploading data to external servers. Additional specialized tools allow for the integration of webcam feeds as picture-in-picture overlays and the addition of animated arrows, text, and custom cursor effects.
The software covers a wide range of media capabilities, including screen and audio capture, timeline-based editing with audio waveforms, and visual enhancement tools for custom backgrounds. It supports various media export options for different resolutions and aspect ratios.
The project is implemented using TypeScript.
Features
- Screen and Audio Capture - Captures simultaneous screen video and system/microphone audio for recording.
- Screen Recording and GIF Editors - Combines screen capture with a timeline editor for trimming and cropping video recordings.
- Visual Tutorial Creation - Supports creating step-by-step software tutorials through screen recording and visual annotations.
- Canvas Rendering - Uses a canvas-based rendering system to draw video frames and overlays for real-time visual manipulation.
- Instructional Video Production - Provides tools for trimming recordings and adding highlights to create clear instructional content.
- Video Post-Production Effects - Produces polished promotional demos using webcam overlays, cursor smoothing, and custom backgrounds.
- Video Timeline Visualizers - Provides a video timeline with audio waveforms and snapping guides for precise trimming and cropping.
- Visual Layer Composition - Utilizes a layered composition pipeline to stack backgrounds, screen captures, and overlays before rendering.
- Timeline State Managers - Employs a centralized time-index to manage playback markers, audio cuts, and visual changes.
- Visual Annotation Tools - Implements a system for adding animated arrows, text, and custom cursor effects to emphasize screen elements.
- Visual Annotation Tools - Allows adding animated arrows, text, and images to highlight specific elements in recordings.
- Automatic Speech Recognition - Provides on-device speech-to-text transcription to generate captions locally for privacy.
- Technical Media Capture - Captures high-resolution window and audio streams specifically for technical documentation guides.
- Animated Recording Exporters - Exports recorded screen activity into video files with customizable resolutions and aspect ratios.
- Automatic On-Device Captioning - Provides on-device voiceover transcription to create captions without uploading data to external servers.
- Cursor Animations - Enhances cursor visibility with custom sizes, smoothing, and click effects during playback.
- On-Device Generation - Generates voiceover captions directly on the user's device to ensure data privacy and offline access.
- Customizable Webcam Bubbles - Integrates webcam feeds as picture-in-picture overlays with adjustable shapes and positions.
- Automated Zoom Effects - Implements dynamic zooming that follows the cursor or manual focal points with adjustable easing.
- Screen Space Coordinate Mappings - Calculates focal points by mapping cursor coordinates to the screen space for dynamic zooming.
