{
  "kind": "Original synthetic diagnostic, not real music or an accuracy test",
  "seconds": 2,
  "videoCodec": "MPEG-4 Part 2",
  "audioCodec": "AAC",
  "firstFileAudioHz": [
    440,
    880
  ],
  "secondFileAudioHz": [
    880,
    440
  ],
  "defaultAudioTrack": 2,
  "commands": [
    [
      "-y",
      "-f",
      "lavfi",
      "-i",
      "color=c=black:s=160x90:r=10:d=2",
      "-f",
      "lavfi",
      "-i",
      "sine=frequency=440:sample_rate=22050:duration=2",
      "-f",
      "lavfi",
      "-i",
      "sine=frequency=880:sample_rate=22050:duration=2",
      "-map",
      "0:v:0",
      "-map",
      "1:a:0",
      "-map",
      "2:a:0",
      "-c:v",
      "mpeg4",
      "-c:a",
      "aac",
      "-disposition:a:0",
      "0",
      "-disposition:a:1",
      "default",
      "-t",
      "2",
      "a4-first.mp4"
    ],
    [
      "-y",
      "-i",
      "a4-first.mp4",
      "-map",
      "0:v:0",
      "-map",
      "0:a:1",
      "-map",
      "0:a:0",
      "-c",
      "copy",
      "-disposition:a:0",
      "0",
      "-disposition:a:1",
      "default",
      "a5-first.mp4"
    ]
  ],
  "files": [
    {
      "name": "a4-first.mp4",
      "bytes": 35513,
      "sha256": "84f188bbbb990e1d45132e31ab9d691ead1e83f28e637cd8890f832514cf06bd"
    },
    {
      "name": "a5-first.mp4",
      "bytes": 35513,
      "sha256": "b85353edf4faa4c71fe72873618dbdb1b28117b212f73361c4e63fb5748f5b12"
    }
  ]
}