Encode Cuda device memory frames to h264 on Tegra K1. Libs, encoders, c++ examples

Autonomous Machines Jetson & Embedded Systems Jetson TK1
1

Hello,

Where is examples for Encoding Cuda device memory frames to h264 on Tegra, using c++?

Best regards, Viktor.

2

Hi vsw,

Could you provide more information regarding your use case?
What’s the pipeline you’re using?
We need to know where cuda device memory is from, then I can give suggestion.

Thanks

3

Hi Kayccc,
I have prepared images in CUDA code, such as nppiremap, some copy roi operations. This images stored in CUDA memory allocated via cudaMalloc. This operations produced in loop and i want use HW encoder to write images into h264 file. My system based on Ubuntu 14 and tegra Tk1.
How i can do it? I can’t find any examples with CUDA memory encode to h264.

Best regards, Viktor.

4

Hi vsw,

If memory is from cudaMalloc, your need memory copy from device to CPU(appsrc).
For encoding API, you can use following pipeline to encode:
appsrc → videoparse → nvvidconv ! ‘video/x-raw(memory:NVMM), format=(string)I420’ ! omxh264enc ->appsink

Thanks

5

Thank you.

Now i am using unified(cudaAllocManaged) memory, so i don’t need to copy to device and from device with cudaDeviceSynchronize() and i can encode frames directly as in your advice.

Best regards, Viktor.