I'm getting a strange error when trying to run my ...
# ask-ai
s
I'm getting a strange error when trying to run my project locally: ERROR livekit.agents - error decoding audio [Voice Service] Traceback (most recent call last): [Voice Service] File /env/lib/python3.12/site-packages/livekit/agents/utils/codecs/decoder.py", line 173, in _decode_loop [Voice Service] container = av.open( [Voice Service] ^^^^^^^^ [Voice Service] File "av/container/core.pyx", line 420, in av.container.core.open [Voice Service] File "av/container/core.pyx", line 266, in av.container.core.Container.cinit [Voice Service] File "av/container/core.pyx", line 286, in av.container.core.Container.err_check [Voice Service] File "av/error.pyx", line 326, in av.error.err_check [Voice Service] av.error.BrokenPipeError: [Errno 32] Broken pipe: 'none' {"pid": 35257, "job_id": "AJ_wJRhXsSM45s5"} [Voice Service] 2025-08-15 121002,001 - WARNING livekit.agents - failed to synthesize speech, retrying in 2.0s What's going on here? this was working yesterday but suddenly fails now
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Thanks for reaching out, Amir. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
Hey there! That error you're seeing, "error decoding audio" and "av.error.BrokenPipeError: [Errno 32] Broken pipe," usually pops up when there's a hiccup in the audio decoding process. No worries though, here are some friendly tips to help you fix it: • Make Sure Initialization is Spot On: Double-check that your audio decoder is set up correctly and that you're cleaning up resources properly, maybe with context managers or try-finally blocks. • Verify Audio Format: Make sure the audio format and codec settings match what your input data expects. • Avoid Writing to Closed Channels: Check that the output channel isn’t closing too soon while the decoder is still working. • Boost Queue Size: If you’re using an AudioSource, try increasing the
queue_size_ms
parameter to keep the internal audio frame queue from getting overwhelmed. • Handle Exceptions Gracefully: Use proper exception handling to catch errors and close resources safely. • Keep Thread Safety in Mind: Use threading or async locks to make sure shared resources are handled safely. Here’s a quick example to show how you can initialize and clean up the decoder properly:
Copy code
decoder = AudioStreamDecoder(
    sample_rate=48000,
    num_channels=2,
    format="aac"
)
try:
    # use the decoder
finally:
    await decoder.aclose()
If you try these out and still run into trouble, just give me a shout—I’m here to help!