why resampler has many threads?

[zhngs]

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• OS: linux centos 7
• PyAV runtime: 12.2.0

[XIAO-FAN-5257]

What command is this diagram executed by? Also, can the stack of threads inside the process be seen?
@zhngs

[XIAO-FAN-5257]

I also found this problem. Without adding a resampler, there are more than 60 threads for one stream. With a resampler added, there will be more than 120 threads.