How to force YCbCr 4:2:2 on DP output using DRM

Hi, I’m using DRM on the Jetson AGX Orin (R36.4) to output 4K60 video on the DisplayPort output (by stopping display manager and loading “modprobe nvidia-drm modeset=1”) as explained in the DRM examples.
According to some log output, the transmitted video signal has RGB 4:4:4 format with 30 bpp. How can I force the output to YCbCr 4:2:2 with 20 bpp, in order to reduce the data rate?
Background of my question is that transmitting two video streams per DP MST often leads to problems because one monitor gets a too large bandwidth assigned which doesn’t leave enough bandwidth for the second monitor.

Hi,
Here are some suggestions for the common issues:

1. Performance

Please run the below command before benchmarking deep learning use case:

$ sudo nvpmodel -m 0
$ sudo jetson_clocks

2. Installation

Installation guide of deep learning frameworks on Jetson:

3. Tutorial

Startup deep learning tutorial:

4. Report issue

If these suggestions don’t help and you want to report an issue to us, please attach the model, command/step, and the customized app (if any) with us to reproduce locally.

Thanks!

I’m sorry, but I can’t see the direct relation to my question?
Apart from this, I always run the AGX at maximum performance with jetson_clocks. And there is no inference or anything else running on the AGX. My problem is purely related to the physically available DisplayPort bandwidth.

Hi,
We don’t support YUV422 mode on Orin series on current release. We are checking if we can enable it in future release.

Ok, thank you.