:play()
Plays a movie one time and stops at the last frame.
Note: Currently L5 can only play ogv (Ogg Theora) video files. Use an external program such as Handbrake or ffmpeg (command line) to convert mp4, avi, mkv, and mov codecs first.
Differences from Processing and p5.js: Processing requires a separate Video library but can work with more codecs. p5.js requires creating a DOM Video element separate from the canvas and playing once loaded asyncronously. L5's load and play functions are simple and syncronous.
Examples

function setup()
windowTitle("loadVideo example")
video = loadVideo("assets/heads.ogv")
video:play()
describe("A basic example of loading a video, then playing it by drawing frames in the draw loop")
end
function draw()
background(51)
image(video, 0, 0, width, height)
end
Syntax
videofile:play()