Based on the given text, here are some key features of Resolume Arena:

1. Seamless 360-degree projection: It can wrap around a composition for seamless playback across multiple screens.

2. Multiple output support: You can use as many videos and effects as your computer allows, making it suitable for small clubs or large stage performances like Ultra.

3. Advanced video warping: The software supports advanced Bezier transformations that allow you to warp your video onto non-rectangular surfaces such as curved screens perfect for projection mapping on various shapes.

4. Customizable output: You can create multiple slices of a composition, position them anywhere, and transform them independently in the advanced Output window.

5. Versatility with hardware: As long as your computer recognizes it as an output, Resolume will let you use it, making it compatible with almost any display setup imaginable.

6. Control over playback: You can play videos forwards or backwards, scratch tracks, adjust tempo to match beats, and generally treat the software like a musical instrument for real-time performance control.

7. Flexibility in style: Whether you're looking for simple background visuals or complex effects-driven performances, Resolume offers an easy interface that allows you to express your unique style freely without extensive knowledge of video editing techniques.

8. Powerful enough for large-scale productions but also suitable for small club shows: With its ability to handle multiple outputs and high-resolution playback simultaneously, it can easily scale up from a local club setup to main stage performances at major festivals like Ultra or beyond, limited only by the raw processing power of your computer hardware rather than any specific software limitations.

Resolume arena 5 free