no_audio_stream · 4106 · HTTP 422

{
  "ok": false,
  "request_id": "req_…",
  "error": {
    "code": "no_audio_stream",
    "number": 4106,
    "message": "The downloaded media carried no audio stream, so it could not be transcribed. Distinct from no_speech, which means audio exists but carries no speech. PERMANENT on purpose: retrying re-runs the same conversion on the same bytes and fails identically.",
    "docs": "https://transcriptfetch.com/docs/errors/no_audio_stream"
  }
}

Every failure carries error.code, error.number, error.message and error.docs, plus at most one of retry_with (the request change that would succeed), details (structured specifics) or issues (validation problems).

No audio track. The downloaded media carried no audio stream, so it could not be transcribed. Distinct from no_speech, which means audio exists but carries no speech. PERMANENT on purpose: retrying re-runs the same conversion on the same bytes and fails identically.

Shown to end users as: “That video has no audio, so there is nothing to transcribe.”

• No audio track. The downloaded media carried no audio stream, so it could not be transcribed. Distinct from no_speech, which means audio exists but carries no speech. PERMANENT on purpose: retrying re-runs the same conversion on the same bytes and fails identically.

• Permanent for this input: the same request will fail the same way, so do not retry unchanged. Failed requests are never charged.
• AI Fallback Transcription would not help here: there is no accessible speech to transcribe.