seekMap:
  isSeekable = true
  duration = 900000
  getPosition(0) = [[timeUs=0, position=0]]
  getPosition(1) = [[timeUs=1, position=0]]
  getPosition(450000) = [[timeUs=450000, position=11421]]
  getPosition(900000) = [[timeUs=900000, position=23030]]
numberOfTracks = 1
track 256:
  total output bytes = 396
  sample count = 2
  format 0:
    id = 1/256
    sampleMimeType = video/hevc
    codecs = hvc1.1.6.L90.90
    width = 854
    height = 480
    initializationData:
      data = length 83, hash 7F428
  sample 0:
    time = 966666
    flags = 0
    data = length 141, hash 9787F33A
  sample 1:
    time = 933333
    flags = 0
    data = length 87, hash EEC4D98C
tracksEnded = true