bandwidth: 195857
audio_info {
  codec: "mp4a.40.2"
  sampling_frequency: 44100
  time_scale: 44100
  num_channels: 2
  decoder_config: "\022\020\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
}
content_protections {
  scheme_id_uri: "http://foo.com/"
}
init_range {
  begin: 0
  end: 863
}
index_range {
  begin: 864
  end: 931
}
media_file_name: "encrypted_audio.mp4"
media_duration_seconds: 24.009434
reference_time_scale: 44100
container_type: CONTAINER_MP4