ENC Output Plane qBuffer Segmentation fault

[liuq1]

I want to implement a pipeline : v4l2 camera → yuv422 → NvBufferTransform → yuv420 → NvVideoEncode.
I follow the example codes as below:

tegra_multimedia_API:dq buffer from encoder output_plane can not completed

Please refer to attached sample. It demonstrates V4L2 camera → NvBuffer(fd) → NvBufferTransform(YUV422toYUV420) → NvVideoEncoder camera_v4l2_cuda.cpp (22.9 KB)

How to get the NvBuffer from the fd?

Hi, I am extending jetson multimedia “10_Camera_recording” example with a NvBufferTransform for the video resolution conversion once the buffer is received from the Camera Source. I have created the Transform Out FD using the ret = NvBufferCreateEx(&out_dmabuf_fd, &output_params); output_params.width = 640; output_params.height = 480; output_params.layout = NvBufferLayout_Pitch; output_params.payloadType = NvBufferPayload_SurfArray; output_params.nvbuf_tag = NvBufferTag_VIDEO_CONVERT; output…

But it fails when it runs to

it shows Segmentation fault

Can anyone help to look at this. Thanks.

[DaneLLL]

Hi,
Please refer to the patch for r35 releases:
How to use v4l2 to capture videos in Jetson Orin r35 Jetpack 5.0 and encode them using a hardware encoding chip - #8 by DaneLLL