Attach a sample to demonstrate tegra_multimedia_api + OpenCV GpuMat.
1 Do not install OpenCV 3.3.1 via Jetpack. It is installed by default. Please un-check OpenCV 3.3.1
2 Jetpack will ban installing the sample package if you un-check OpenCV, so please download it from
https://developer.nvidia.com/embedded/dlc/multimedia-api-r2821
3 Get the script https://github.com/AastaNV/JEP/blob/master/script/install_opencv3.4.0_TX2.sh
4 Execute the script
$ mkdir OpenCV
$ ./install_opencv3.4.0_TX2.sh OpenCV
5 Apply the patch and rebuild 09_camera_jpeg_capture
6 Run
$ export DISPLAY=:0
09_camera_jpeg_capture$ ./camera_jpeg_capture --disable-jpg --cap-time 10
Please try steps above.