seekMap:
  isSeekable = true
  duration = 766
  getPosition(0) = [[timeUs=0, position=0]]
  getPosition(1) = [[timeUs=1, position=0]]
  getPosition(383) = [[timeUs=383, position=23128]]
  getPosition(766) = [[timeUs=766, position=46445]]
numberOfTracks = 2
track 192:
  total output bytes = 0
  sample count = 0
  format 0:
    id = 192
    sampleMimeType = audio/mpeg-L2
    maxInputSize = 4096
    channelCount = 1
    sampleRate = 44100
track 224:
  total output bytes = 19791
  sample count = 0
  format 0:
    id = 224
    sampleMimeType = video/mpeg2
    width = 640
    height = 426
    initializationData:
      data = length 22, hash 743CC6F8
tracksEnded = true