AGI Call Recording Issue - Getting Empty WAV Files (44 bytes)

[RAhmedM]

Problem Description

I’m experiencing an intermittent issue with AGI call recordings where agi.record_file() sometimes produces audio files that are only 44 bytes in size. These files contain only the WAV header with no actual audio data.

Code Example

recording_file = f"/tmp/customer_input1_{unique_id}.wav"
agi.record_file(recording_file.replace(“.wav”, “”), “wav”, “#”, 3000, 0, 0)

Symptoms

• Expected: WAV files with actual audio content (typically several KB)
• Actual: Some files are exactly 44 bytes (WAV header only)
• Frequency: Intermittent - happens randomly, not consistently
• Impact: Speech recognition fails on these empty files

Observations

• The issue appears to be more common during certain call scenarios
• No obvious error messages in AGI logs when this occurs
• The recording timeout (3000ms) should be sufficient for normal responses
• File permissions and disk space are not issues

Questions

1. Has anyone experienced similar issues with agi.record_file()?
2. What could cause the recording to stop immediately after creating the WAV header?
3. Are there any AGI configuration parameters that might help?
4. Should I implement additional error checking or retry logic?

What I’ve Tried

• Verified file paths and permissions
• Checked available disk space
• Confirmed the recording timeout is reasonable
• Added logging to track when this occurs
• Retry file saving

Request for Help

Any suggestions for:

• Debugging this issue further
• Alternative recording approaches
• AGI best practices for reliable audio recording
• Configuration tweaks that might resolve this

Thanks in advance for any insights or suggestions!