Who controls NVDEC video decoder engine rate on TX2

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

Hi，
I used sudo ./tegrastats to analyze TX2 decoding performance and found that sometimes the NVDEC value is changing. I guess it is related to the amount of decode data.

I am curious about who controls NVDEC video decoder engine rate, can I manually set it?

2

Hi changding,
It run dynamic frequency scaling in

root@tegra-ubuntu:/sys/kernel/debug/bpmp/debug/clk/nvdec# cat min_rate
115200000
root@tegra-ubuntu:/sys/kernel/debug/bpmp/debug/clk/nvdec# cat max_rate
1164800000

We don’t suggest you manually configure it.

3

Hi DaneLLL
Sometimes my decoding speed is only lower than min_rate, I want to know why? there is other place will affect the NVDEC decode rate

4

Hi changding,
We don’t observe NVDEC going lower than min_rate. Please share steps to reproduce the issue. Are you on r28.2.1?