{
  "video_profile": {"codec": "hevc", "bit_depth": 8, "chroma_subsampling": "4:2:0", "color_space": "bt709-limited", "transfer_function": "sdr"},
  "audio_profile": {"codec": "opus", "sample_rate_hz": 48000, "channels": 2, "channel_layout": "stereo", "packet_duration_ms": 5},
  "display_mode": {"resolution_width": 2560, "resolution_height": 1440, "fps": 120},
  "bitrate_target_kbps": 40000,
  "bitrate_maximum_kbps": 50000,
  "adjustment": {"display_reason": "none", "bitrate_reason": "policy_default"},
  "media_timestamp_basis": "gateway-send-wall-clock-ms"
}