Orin AGX Jetpack 6 NVDEC limitation of <= 8 streams

[philipp.schmidt]

We just ran into an unexpected limit of 8 concurrent NVDEC video streams, despite the datasheet for AGX Orin stating that it can handle 20+ streams at FHD.

There are already open discussions for this:

Jetson AGX Orin FAQ

Q: How to apply PCN210100 overlay patch? PCN210100 is supported from Jetpack 5.1.3. If you are using 5.1.1 or 5.1.2, there are overlay packages in: Jetson Linux 35.3.1 | NVIDIA Developer Jetson Linux 35.4.1 | NVIDIA Developer If your device is AGX Orin 64GB, please also add the patch mentioned in below link: AGX orin 64GB flash fail - #3 by DaveYYY Without this patch, Orin AGX 64GB with PCN update may not get flashed Q: I cannot control GPIO in JP6.0 and JP6.1, but it works with JP5.x It…

InitNVDEC: Host1x channel open failed

Hi, NVIDIA team I’m trying to play more than10 videos at the same time. But L4T 36.3.0 can not play them. When I used R35.5, it was possible to play more than 20 videos. 8 streams are no problem at the same time. But 9th stream has error. ubuntu@ubuntu-desktop:~$ gst-launch-1.0 filesrc location=big_buck_bunny_480p_h264.mov ! qtdemux ! h264parse ! nvv4l2decoder ! nvvidconv ! xvimagesink Setting pipeline to PAUSED ... Opening in BLOCKING MODE Pipeline is PREROLLING ... NvMMLiteOpen : Block :…

We especially cannot make heads or tails of this statement:

@DaneLLL

Hi,
We think the implementation of Jetpack 5 may have potential issue. If creating more processes than hardware resources can afford, it may not work properly in certain conditions. Implementation of Jetpack 6 is more from the perspective of hardware capability and returns failure when it exceeds hardware resources.

Could we please get more insight about the following questions:

1. What is the issue with Jetpack 5 and the way resource is allocated there. We run far more than 8 streams in production and would like to know if we should be concerned.

2. “Jetpack 6 is more from the perspective of hardware capability” > the hardware capability for AGX Orin is at least 11x 1080p60. We expect at least 15x 1080p30. Can we get a comment on where the limitation to 8 streams originates from given the stated hardware capability?

Thanks!

[DaneLLL]

Hi,
For information, do you use Jetpack 6.2 or 6.1?

[philipp.schmidt]

Hi @DaneLLL

thanks for the quick response. We tested with JP 6.0.

Will JP 6.2 behave differently?

[philipp.schmidt]

Just got verification from my engineers that we see the same issues at least for JP 6.1 as well

[DaneLLL]

Hi,
Please apply the patches to Jetpack 6.1/6.2 and rebuild kernel.

r36_4_TEST_kernel_host1x.zip (6.0 KB)

[philipp.schmidt]

Hi,

thanks we will try. Is it too early to get a comment on when this will make it into a JP release?

[DaneLLL]

Hi,
The next Jetpack 6(after 6.2) release will include the fix. On Jetpack 6.2/6.1, please refer to kernel customization section in developer guide to rebuild kernel.

[philipp.schmidt]

Hello @DaneLLL, we could verify that the kernel patch fixes the issue. Thanks. As the fix is rather complicated to apply, we would have to wait for the next JP release before we can use this with customers or partners.