#!/usr/bin/env zx

if (argv._.length < 2) {
  console.log("Usage: concatv output [...input]")
  process.exit(0)
}

const output = argv._[0]
const inputs = argv._.slice(1)

await $`printf "file '%s'\n" ${inputs} >_concatv_`
await $`ffmpeg -f concat -i _concatv_ -c copy ${output}`
await $`rm _concatv_`