seekMap:
  isSeekable = true
  duration = UNSET TIME
  getPosition(0) = [[timeUs=0, position=20345]]
  getPosition(1) = [[timeUs=0, position=20345]]
numberOfTracks = 1
track 1024:
  total output bytes = 0
  sample count = 0
  format 0:
    metadata = entries=[Motion photo metadata: photoStartPosition=0, photoSize=20345, photoPresentationTimestampUs=-9223372036854775807, videoStartPosition=20345, videoSize=2582]
tracksEnded = true
