vcat (Video conCAT) is a declarative language for editing video.

🚧 Work in progress 🚧

Currently implemented features

Video features

• Concatenation (via concat function)
• Audio support
• A combination of lossless editing techniques and video caching allows for faster re-render times compared to other video editing software
• Automatic transcoding, rescaling, padding, colorspace conversion, and framerate conversion for video
• Automatic transcoding and resampling for audio
• Fixed and mixed framerate support

Language features

• Lists (represented with square brackets)
• let in expressions, ie:

let
  o = vopen;
  part1 = concat(o("1.mp4"), o("2.mp4"));
  part2 = concat(o("3.mp4"), o("4.mp4"));
in
  concat(repeat(part1, 3), part2)

Miscellaneous features

• Functional CLI
• Extensive error message system (similar to the one used in my other project, wlab)

Planned features

• Video trimming
• Lambdas and functional programming features such as map
• Other video/audio effects