import { promisify } from "util"
import { execFile } from "child_process"


export async function remux(inputVideoPath: string, outputVideoPath: string): Promise<void> {
  console.log(`remuxing video ${inputVideoPath} and ouputting to ${outputVideoPath}.`)
  const execFileP = promisify(execFile)
  const { stdout, stderr } = await execFileP('ffmpeg', [
    '-i', inputVideoPath,
    '-c', 'copy',
    outputVideoPath
  ])
  console.log(`stdout=${stdout}`)
  console.log(`stderr=${stderr}`)
}