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--- products:sbc:vim4:add-ons:vim4-mipi-camera [2023/07/04 23:33]
nick
+++ products:sbc:vim4:add-ons:vim4-mipi-camera [2024/05/18 03:12] (current)
nick [Record Video via Gstreamer]
@@ Line 1: / Line 1: @@
+~~tag> VIM4 OpenCV V4l2 MIPI ISP ~~
 {{indexmenu_n>50}}
@@ Line 26: / Line 28: @@
 ```shell
-gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV12 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
+gst-launch-1.0 -e v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV21,width=3840,height=2160,framerate=30/1 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
 ```
@@ Line 60: / Line 62: @@
     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_WIDTH, 3840);
-    capture.set(CAP_PROP_FRAME_HEIGHT, 1080);
+    capture.set(CAP_PROP_FRAME_HEIGHT, 2160);
     while (count)
     {
@@ Line 102: / Line 104: @@
     string str = argv[1];
     string gstformat = "NV12";
-    string gstfile = "v4l2src device=" + str + " ! video/x-raw,format=" + gstformat + ",width=1920,height=1080,framerate=30/1 ! videoconvert ! appsink";
+    string gstfile = "v4l2src device=" + str + " ! video/x-raw,format=" + gstformat + ",width=3840,height=2160,framerate=30/1 ! videoconvert ! appsink";
     VideoCapture capture(gstfile);
@@ Line 140: / Line 142: @@
 WIP:
-====== New VIM4 MIPI Camera Usage ======
-===== Linux =====
-==== Enable Overlays ====
-If you want to use the OS08A10 MIPI camera, you need to enable it in [[products:sbc:vim4:configurations:device-tree-overlay|overlays]], you need to add ''vim4n-os08a10'' to ''fdt_overlays'' in ''/boot/dtb/amlogic/kvim4.dtb.overlay.env''.
-```
-$ cat /boot/dtb/amlogic/kvim4.dtb.overlay.env
-fdt_overlays=vim4n-os08a10
-```
-And then reboot to take effect.
-==== Video Node ====
-The video node is ''/dev/media0''.
-==== Get Frames via Mediactl API ====
-You can get the test source code here: https://github.com/numbqq/v4l2_media_test
-Download and build the test source code:
-<tabbox 5.4 kernel>
-```shell
-$ git clone https://github.com/numbqq/v4l2_media_test
-$ cd v4l2_media_test
-$ git checkout e0482794337c01935593a91b621f9c42123cf175
-$ g++ v4l2_test_raw.cpp -o v4l2_test_raw  -Wall -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -pthread -fPIE -lispaml -ldl -lmediaAPI -ltuning -lm -fPIC -D_FORTIFY_SOURCE=2 -O3
-$ ls v4l2_test_raw
-v4l2_test_raw
-```
-<tabbox 5.15 kernel>
-```shell
-$ git clone https://github.com/numbqq/v4l2_media_test
-$ cd v4l2_media_test
-$ g++ v4l2_test_raw.cpp -o v4l2_test_raw  -Wall -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -pthread -fPIE -lispaml -ldl -lmediaAPI -ltuning -llens -lm -fPIC -D_FORTIFY_SOURCE=2 -O3
-$ ls v4l2_test_raw
-v4l2_test_raw
-```
-</tabbox>
-Test:
-```shell
-$ ./v4l2_test_raw -p 0 -n 10 -m /dev/media0
-```
-It will capture 10 frames to file ''/tmp/dst_mif_0.yuv''.
-Preview the file:
-```shell
-$ ffplay -f rawvideo -pixel_format nv21 -video_size 3840x2160 /tmp/dst_mif_0.yuv
-```
-===== Android =====
-WIP:

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