How to use ROI encoding on XavierNX

I want to use ROI encoding, and try it base on the tegra_multimedia_api/samples/01_video_encode.
I run the sample code as:

./video_encode input.yuv 1920 1080 H264 out.264 --eroi -roi roi.cfg --input-metadata

And the content of roi.cfg is just like:
3 -4 34 34 16 16 -5 70 70 18 18 -3 100 100 34 34
3 -4 34 34 16 16 -5 70 70 18 18 -3 100 100 34 34
3 -4 34 34 16 16 -5 70 70 18 18 -3 100 100 34 34

but I found that all Qps are the same in a frame in file out.264, it means ROI doesn’t take effect, so what should I do? Thanks.roi.zip (194 Bytes)

Hi,
Please attach roi.cfg for our reference.

Attached the roi.cfg, thanks. roi.zip (194 Bytes)

I am facing exactly the same problem.
Do I have to set any other options like vbr?