This file lets you record using ffmpeg on a raspberry pi, in swift!

raspberry-pi-ffmpeg.swift

//https://github.com/futurejones/Swift-Lite/

////Install
// curl -s https://packagecloud.io/install/repositories/swift-arm/swift-lite/script.deb.sh | sudo bash
// sudo apt-get install swift-lite-rpi
////Compile
// swift-lite-build raspberry-pi-ffmpeg.swift
////Run
// ./raspberry-pi-ffmpeg.swapp

import Foundation

@discardableResult
func shell(_ args: String...) -> Process {
    let task = Process()
    task.executableURL = URL(string: "/usr/bin/env")!
    task.arguments = args
    try? task.run()
    //task.waitUntilExit()
    //return task.terminationStatus
    return task
}

var ffmpeg: Process?

ffmpeg = shell("ffmpeg",
  "-f", "v4l2",
  "-i", "/dev/video0",
  "-s", "1024x576",
  "-c:v", "h264_omx",
  "-b:v", "5000k",
  "-pix_fmt", "yuv420p",
  "-profile:v", "high", 
  "-c:a", "copy", 
  "-tune", "zerolatency",
  "-vsync", "1",
  "-g", "30",
  "-y", "/home/pi/Desktop/output.mp4")

DispatchQueue.main.asyncAfter(deadline: .now() + 10.0) {
 ffmpeg?.terminate()
 shell("vlc","/home/pi/Desktop/output.mp4")
}

RunLoop.main.run()