V4L2 capture with GStreamer: NVMM & BGRA/BGRx color format

Autonomous Machines Jetson & Embedded Systems Jetson TX2
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Hi everybody,

we are trying to capture video from a v4l2 source using GStreamer pipeline. We wrote a v4l2 driver for our device. It outputs video in BGRx color format.

We have problems to find a way to capture directly into GPU memory (NVMM).

nvgstcapture and nvv4l2camerasrc do not support the color formats.

Any suggestion on how to solve this?

Thanks
Bruno

3

Hi,
Yo can download source code of nvv4l2camerasrc and customize it to support BGRx. The matched NvBuffer format is NvBufferColorFormat_XRGB32. All source code is packetized into
https://developer.nvidia.com/embedded/linux-tegra
L4T Driver Package (BSP) Sources

FYR, there is also jetson_multimedia_api sample demonstrating v4l2 capture:

/usr/src/jetson_multimedia_api/samples/12_camera_v4l2_cuda
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4

Hi DaneLLL,

thanks for the help! After updating L4T to 32.6.1 we were able to build the customized nvv4l2camerasrc.

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