ffmpeg-gl-transition is an extension for FFmpeg that introduces support for GLSL-based transitions between video streams, enabling visually rich effects during video concatenation. It replaces complex FFmpeg filter graphs with a simpler approach that uses shader-based transitions, making it easier to create custom visual effects. The tool integrates OpenGL rendering into FFmpeg, allowing developers to apply transitions such as crossfades and warp effects between clips. It supports customizable parameters such as duration, offset, and shader source files, providing flexibility in transition design. ...