mifi/editly
Editly
Editly ist eine Headless-Engine für die programmatische Videobearbeitung und automatisierte Assemblierung. Es fungiert als deklarativer Video-Editor, der MP4- und GIF-Exporte aus strukturierten Daten oder Code generiert und somit keine manuelle grafische Benutzeroberfläche erfordert.
Das System zeichnet sich durch die Möglichkeit aus, GLSL-Fragment-Shader als visuelle Ebenen in eine programmatische Timeline zu integrieren. Es verwendet ein konfigurationsbasiertes Modell zur Definition von Clips, Ebenen und Audiospuren, was eine reproduzierbare Video-Assemblierung und die Erstellung benutzerdefinierter programmatischer Grafiken ermöglicht.
Die Engine deckt ein breites Spektrum an Medienproduktionsfunktionen ab, darunter nicht-lineare Videosequenzierung, Skalierung von Assets sowie Multi-Track-Audiomischung mit automatischer Normalisierung und Ducking. Die visuelle Komposition erfolgt durch Canvas-basiertes Rendering für Texteinblendungen, Untertitel und Kamera-Simulationseffekte wie Zoomen und Schwenken.
Die Rendering-Engine und ihre Abhängigkeiten sind als containerisiertes Image für eine konsistente Ausführung in verschiedenen Umgebungen verfügbar.
Features
- Video Assembly - Provides a system for combining image sequences and audio tracks into final video files based on declarative specifications.
- Programmatic Video Generation - Automates video production via an API or command line to generate content from data or code.
- Video Editing - Implements a programmatic system for cutting, trimming, and sequencing video footage via declarative specifications.
- Programmatic Video Compositors - Composes video clips, text, and audio programmatically using a declarative specification instead of a GUI.
- Declarative - Implements a command line tool that assembles videos using configuration files instead of a manual timeline interface.
- Headless Video Editing Engines - Provides a server-side editing engine that produces video exports without requiring a graphical user interface.
- Programmatic Motion Graphics - Produces custom visuals and programmatic overlays using canvas elements and mathematical definitions.
- Composite Visual Overlays - Layers text, subtitles, and transparent images using alpha channels for complex visual arrangements.
- Declarative Video Timelines - Provides a configuration-based model to define clips, layers, and audio tracks for automated video assembly.
- Fragment Shader Rendering - Integrates GLSL fragment shaders as visual layers to produce programmatic graphics and dynamic effects.
- Text Rendering - Renders styled text and background layers onto a canvas for titles and credits.
- Non-Linear Video Editing - Arranges clips and layers on a temporal timeline with specific durations and transitions.
- Text Overlays - Programmatically draws titles and news-style banners directly onto video frames.
- FFmpeg Transcoders - Uses FFmpeg as the primary engine for transcoding, trimming, and merging video and audio streams.
- Visual Overlays - Adds styled text, subtitles, and programmatic graphics to video files using precise coordinates.
- Video Project Specifications - Provides a configuration-based model to define clips, layers, and audio tracks for reproducible video assembly.
- Audio Mixing - Combines detached audio files and background tracks with adjustable volume and precise timing offsets.
- Audio Stream Synchronizers - Synchronizes multiple audio sources using automatic crossfading, normalization, and ducking.
- Background Audio Integration - Attaches external audio files to provide continuous background soundtracks across multiple video clips.
- Camera Movement Simulations - Applies automated zooming and panning to image and video layers to simulate professional camera movement.
- Canvas Rendering - Uses a canvas API to render styled graphics and text overlays before encoding them into video.
- Clip Trimming - Adjusts the start and end points of video segments to extract precise clips from source files.
- Dynamic Video Titles - Renders customizable titles and backgrounds over video clips using specified fonts and durations.
- Dimension-Constrained Resizing - Scales and crops input media to exact dimensions using automatic letterboxing or cover modes.
- Ken Burns Effect Generators - Creates automated zoom and pan movements on static images to produce a professional Ken Burns effect.
- Image-to-Video Sequencing - Combines sequences of static image files into video files with specified durations and background fill colors.
- Media Cropping and Trimming - Provides automated trimming, scaling, and speed adjustments for video and image files.
- Fit Mode Resizers - Resizes video frames using various fit modes, such as stretch or cover with background blur, to match target dimensions.
- Media Segment Trimming - Extracts specific portions from video and audio files by defining precise start and end timestamps.
- Multi-Format Video Export - Renders final video projects into multiple compressed formats including MP4 and GIF.
- Audio Layering - Blends multiple synchronized audio tracks, including voice-overs and background music, into a single project.
- Playback Speed Controllers - Adjusts the playback speed of media segments to fit specific durations or target segment lengths.
- FFmpeg Parameter Injection - Allows injection of custom FFmpeg command-line flags to control encoding quality and codec behavior.
- FFmpeg Video Rescalers - Automatically resizes video frames and manages aspect ratios using FFmpeg scaling algorithms.
- Visual Effects Composition - Blends multiple video layers using fades, zooms, and warps to create smooth scene transitions.
- Video Aspect Ratio Preservers - Automatically scales and letterboxes input media to match target output dimensions and social media aspect ratios.
- General Utilities - Declarative video editing API.
- JavaScript Libraries - Declarative library for automated video editing and animation.
- Screencast and Screenshot Tools - Programmatic video editing for documentation screencasts.
- Video Tools - Declarative tool for programmatic video editing.
- Applications - Command-line video editing tool.
