Enter the sample directory of the mmp directory of the HiSilicon SDK in Ubuntu and execute make to compile, but be careful to first modify the camera to the camera you use, by modifying the Makefile.param file, as shown below, this chip defaults Supported cameras are here, choose the camera you use, I am using ov9712 here.
Enter the sample directory of the mmp directory under Ubuntu, and execute make to compile.
After the compilation is complete,
an APP file sample_venc will be generated in the mpp/sample/venc directory
This is the video recording application.
Copy this file to the development board through nfs and run it.
./sample_venc
At this time, the camera of the development board will start recording, and automatically stop recording after 30 seconds, and generate the stream_chn0.h264 file in the current directory. This file is the recording file in .h264 format, which can be copied to the shared folder of the computer and played by VLC Player to play.