How to handle multiple blocking probe before a muxer without freezing the pipeline?

[Yuniesky Vasconcelo]

Hi,
I am trying to save video and audio when an event occurs, but with 10
seconds before the event. So, I put a queue with max-size-time = 10 seconds
and leaking = 2 before the audio and another one for the video.

Problems arise when I add a blocking probe to the queue src pad, the
pipeline freezes after one of the probe blocks. Perhaps this occurred
because the muxer is waiting for the buffer that was blocked. How can I
handle this situation?
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