{{indexmenu_n>40}}


====== Edge2 MIPI Camera Usage ======

===== Linux =====

==== Upgrade System ====

Please follow the [[products:sbc:edge2:configurations:upgrade-system|documentation ]]to upgrade your system to latest version.

==== Video Node ====

You can find the video nodes from the table below.

|        ^  Video Node(5.10.66)    ^  Video Node(5.10.160)   ^
^  CAM1  |  /dev/video33  |  /dev/video42  |
^  CAM2  |  /dev/video24  |  /dev/video33  |
^  CAM3  |  /dev/video42  |  /dev/video51  |

==== Record Video with Gstreamer ====

<tabbox kernel 5.10.66>

Record video from ''CAM1'':

```shell
gst-launch-1.0 v4l2src device=/dev/video33 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video33.mp4
```

Record video from ''CAM2'':

```shell
gst-launch-1.0 v4l2src device=/dev/video24 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video24.mp4
```

Record video from ''CAM3'':

```shell
gst-launch-1.0 v4l2src device=/dev/video42 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video42.mp4
```

<tabbox Other version>

Record video from ''CAM1'':

```shell
gst-launch-1.0 v4l2src device=/dev/video42 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video42.mp4
```

Record video from ''CAM2'':

```shell
gst-launch-1.0 v4l2src device=/dev/video33 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video33.mp4
```

Record video from ''CAM3'':

```shell
gst-launch-1.0 v4l2src device=/dev/video51 io-mode=dmabuf num-buffers=300 ! mpph264enc ! h264parse ! qtmux ! filesink location=/tmp/video51.mp4
```
</tabbox>

/*
==== Record Video with OpenCV ====

Follow the steps bellow to install OpenCV:

```shell
sudo apt update
sudo apt install libopencv-dev python3-opencv
```

''C++'' source code:

```c++ mipi-camera.cpp
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/core/core.hpp>
#include <iostream>
#include <string>
using
namespace  cv;

using
namespace  std;

int main(int argc, char** argv)
{
    int count=100;
    string str = argv[1];
    string res=str.substr(10);
    VideoCapture capture(stoi(res), CAP_V4L2);
    capture.set(CAP_PROP_FOURCC, VideoWriter::fourcc('U','Y','V','Y'));
    capture.set(CAP_PROP_FRAME_WIDTH, 1920);
    capture.set(CAP_PROP_FRAME_HEIGHT, 1080);
    while (count)
    {
        Mat frame;
        capture >> frame;

        if (frame.empty()) {
            break;
        }
        int h = frame.rows;
        int w = frame.cols;
        const char *name = "video";
        namedWindow(name, 0);
        imshow(name, frame);
        waitKey(30);
        count--;
    }
    return 0;
}

```

Compile:

```shell
gcc -o mipi mipi-camera.cpp -lopencv_imgproc -lopencv_core -lopencv_videoio -lopencv_imgcodecs -lopencv_highgui -std=c++11 -std=gnu++11 -Wall -std=c++11 -lstdc++ -I/usr/include/opencv4
```

Test:

Capture frame from ''CAM1'':

```shell
./mipi /dev/video33
```

Capture frame from ''CAM2'':

```shell
./mipi /dev/video24
```

Capture frame from ''CAM3'':

```shell
./mipi /dev/video42
```
*/
==== Capture Frame with V4L2 Utils ====

Follow the steps below to install ''v4l-utils'':

```shell
sudo apt update
sudo apt install v4l-utils
```

<tabbox kernel 5.10.66>

Capture frame from ''CAM1'':

```shell
v4l2-ctl -d /dev/video33 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data33.yuv --stream-count=1 --stream-poll
```

Capture frame from ''CAM2'':

```shell
v4l2-ctl -d /dev/video24 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data24.yuv --stream-count=1 --stream-poll
```

Capture frame from ''CAM3'':

```shell
v4l2-ctl -d /dev/video42 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data42.yuv --stream-count=1 --stream-poll
```

<tabbox Other version>

Capture frame from ''CAM1'':

```shell
v4l2-ctl -d /dev/video42 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data42.yuv --stream-count=1 --stream-poll
```

Capture frame from ''CAM2'':

```shell
v4l2-ctl -d /dev/video33 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data33.yuv --stream-count=1 --stream-poll
```

Capture frame from ''CAM3'':

```shell
v4l2-ctl -d /dev/video51 --set-fmt-video=width=3840,height=2160,pixelformat=NV12 --stream-mmap=3 --stream-skip=3 --stream-to=/tmp/data51.yuv --stream-count=1 --stream-poll
```

</tabbox>

It will capture a ''3840x2160 NV12'' format frame to file ''/tmp/dataXX.yuv''.


Preview the file:

```shell
$ ffplay -f rawvideo -pixel_format nv12 -video_size 3840x2160 /tmp/dataXX.yuv

```

===== Android =====

WIP: