{
  "session_id": "20260901-144706_Pritha-kundu",
  "lang": "bn",
  "language": "বাংলা",
  "narrator": "Pritha kundu",
  "user_agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.6.1 Mobile/15E148 Safari/604.1",
  "mime_type": "audio/mp4;codecs=mp4a.40.2",
  "container": "mp4",
  "started": "2026-09-01T19:47:06+00:00",
  "ended": "2026-09-01T20:02:01+00:00",
  "duration_sec": 891.55,
  "chunks": 178,
  "bytes": 11419522,
  "status": "done",
  "last_chunk_at": "2026-09-01T20:01:58+00:00",
  "file": "20260901-144706_Pritha-kundu.mp4",
  "client_duration_sec": 895,
  "wav": "20260901-144706_Pritha-kundu.wav",
  "ffmpeg_error": null
}