hi

Thanks for reaching out, manish. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

144752.682 DEBUG livekit.agents flush audio emitter due to slow audio generation {"pid": 69857, "job_id": "AJ_WjZ8BVW6gzL6", "room_id": "RM_LJ4GknMTsAxA"} 144752.701 INFO livekit_…nt_events Participant agent-AJ_WjZ8BVW6gzL6 attributes changed: {'lk.agent.state': 'speaking'} {"pid": 69857, "job_id": "AJ_WjZ8BVW6gzL6", "room_id": "RM_LJ4GknMTsAxA"} [LiveKit Egress] Recording started: EG_XSNayG2nZ89V Status: 0 Error: Recording stored at: livekit/recording_917660886385_20251223T091751Z.ogg 144753.814 ERROR livekit.agents error decoding audio Traceback (most recent call last): File "/home/manish/Desktop/Natvoiz/aivb_poc/.venv/lib/python3.12/site-packages/livekit/agents/utils/cod… line 168, in _decode_loop container = av.open( ^^^^^^^^ File "av/container/core.pyx", line 418, in av.container.core.open File "av/container/core.pyx", line 283, in av.container.core.Container.cinit File "av/container/core.pyx", line 303, in av.container.core.Container.err_check File "av/error.pyx", line 424, in av.error.err_check av.error.EOFError: [Errno 541478725] End of file: '<none>' {"pid": 69857, "job_id": "AJ_WjZ8BVW6gzL6", "room_id": "RM_LJ4GknMTsAxA"} Traceback (most recent call last): File "/home/manish/Desktop/Natvoiz/aivb_poc/.venv/lib/python3.12/site-packages/livekit/agents/utils/codecs/decoder.py", line 168, in _decode_loop container = av.open( ^^^^^^^^ File "av/container/core.pyx", line 418, in av.container.core.open File "av/container/core.pyx", line 283, in av.container.core.Container.cinit File "av/container/core.pyx", line 303, in av.container.core.Container.err_check File "av/error.pyx", line 424, in av.error.err_check

Thanks — I see the logs you pasted showing: • "flush audio emitter due to slow audio generation" • Egress recording started • later an

av.error.EOFError: End of file

raised inside

_decode_loop

when calling

av.open()

What this means • The decoder is trying to open audio input that’s empty or not fully written yet. The "flush audio emitter due to slow audio generation" log confirms audio production is lagging and a race condition is likely: recording/decoder starts before stable audio data is available, producing a truncated or missing input and causing EOFError. What you can try next 1. Verify the audio source is available before decoding ◦ Check the file/path your decoder opens is non-empty (e.g.,

os.path.getsize()

). ◦ If using a stream, confirm the producer has started and is emitting packets before calling

av.open()

. 1. Add defensive checks and retries in

_decode_loop

◦ If

av.open()

fails with EOFError, wait a short interval and retry a few times before giving up. ◦ Skip or drop empty inputs and continue processing subsequent valid chunks. 1. Buffer or delay decoder start to avoid the race ◦ Introduce a small buffer window or a "ready" handshake so the decoder only starts after audio generation has begun. ◦ If using LiveKit agents, ensure the agent waits for stable participant audio or a minimum buffer length. 1. Ensure egress/recording timing is correct ◦ Don’t start recording/decoding at the exact instant of egress start; allow a brief warm-up so upstream audio is present. ◦ If participants frequently join/leave, stop egress when no active audio sources exist to avoid partial files. 1. Validate recordings before processing ◦ Confirm the recorded file path exists and has non-zero length before opening with PyAV. ◦ If files are sometimes truncated, add logging that records file size and timestamps when the recorder starts/stops. 1. Update dependencies ◦ Use the latest

livekit-agents

and PyAV builds if possible; newer releases include stability fixes and better error handling. If you’d like, tell me: • Whether you’re using a file-based input or live stream • The agent/library versions (

livekit-agents

, `av`/PyAV) • A short snippet of the

_decode_loop

or how you start decoding/egress I can suggest a retry pattern or a concrete code change for

_decode_loop

based on that.