Where is the source code for nvv4l2h264enc

Hello,
I cannot find the source code for the “nvv4l2h264enc” gstreamer element. Any ideas ?

I can only find gstnvh264enc here
but I assume these are not the same.

Hi,
Please download the package from

https://developer.nvidia.com/EMBEDDED/linux-tegra
L4T Driver Package (BSP) Sources

and extract gst-v4l2 tarfile.