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--- products:sbc:vim4:add-ons:vim4-mipi-camera [2023/07/05 03:07]
nick
+++ products:sbc:vim4:add-ons:vim4-mipi-camera [2024/09/24 03:46] (current)
nick [Preview video on ubuntu desktop]
@@ 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 137: / Line 139: @@
 ./mipi /dev/video50
 ```
+==== Preview video on ubuntu desktop ====
+<tabbox Ubuntu 24.04>
+You can use gstreamer ''waylandsink'' to preview the video on Ubuntu Wayland desktop:
+```shell
+gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap  ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! videoconvert ! waylandsink
+```
+You can use the command below to check display fps:
+```shell
+gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=waylandsink sync=false text-overlay=false
+```
+<tabbox Ubuntu 22.04>
+You can use gstreamer ''clutterautovideosink'' to preview the video on Ubuntu Wayland desktop:
+```shell
+gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! clutterautovideosink
+```
+You can use the command below to check display fps:
+```shell
+gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=clutterautovideosink sync=false text-overlay=true
+```
+You press ''Alt + F7'' and then move mouse to move the windown.
+</tabbox>
 ===== Android =====
 WIP:

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