Problem
Polling /api/v2/recordings/media doesn’t catch the retention window before the STT chunk finishes. The Python script grabs the audio, splits it, then hits the external diarization service.
Code
resp = requests.get(uri)
if resp.status_code == 404:
log.error("uri expired")
Error
404 Not Found on the presigned link.
Question
Interaction API rejects the partial diarization payload. Need a workaround for the chunked upload limit.
Extend the presigned URL expiration via the expires_in parameter before the STT pipeline kicks off, or cache the blob locally so you don’t hit the 404. The retention window locks out partial fetches once the clock runs out.
params = {"expires_in": 900}
resp = requests.get(uri, params=params)
Does your diarization service handle chunked uploads?
headers = {"Authorization": "Bearer <token>"}
# Extend TTL to ensure chain of custody remains intact during bulk export
params = {"expires_in": 1800}
response = requests.get(uri, headers=headers, params=params)
The presigned link expiration kills the metadata chain if the file doesn’t pull fully. For legal discovery, a partial fetch means the recording is flagged as unverified in the audit trail. You can’t reconstruct the hash later. The system treats it as a broken link.
Extending the window works, but watch the storage cost if you’re caching large blobs. The bulk export job usually handles the retry logic better than a custom script. If the STT pipeline takes longer than the default TTL, the system locks out the request immediately.
Here’s how the error looks in the export logs when the signature expires mid-stream:
[Screenshot: Export_Job_Failed_InvalidSignature.png]
Make sure the S3 bucket policy allows the extended duration. Some regions block tokens over 1 hour for compliance reasons. The metadata signature becomes invalid the moment the clock runs out.