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--- products:sbc:vim4:applications:hdmi-input-5.15 [2023/09/01 04:04]
nick created
+++ products:sbc:vim4:applications:hdmi-input-5.15 [2023/09/12 04:32] (current)
nick
@@ Line 1: / Line 1: @@
-====== VIM4 HDMI Input ======
+====== VIM4 HDMI Input for 5.15 Kernel ======
-===== Introduction =====
+===== Hardware Connection =====
-This documentation will introduce the usage of HDMI Input.
+  * Connect your VIM4 HDMI Out to an HDMI Display
+  * Connect your HDMI OUT cable to VIM4 HDMI IN port
-===== Preparation =====
-**HDMI input preview can only work under framebuffer console**, so you need to use the server image, you can install via OOWOW.
+===== Capture the HDMI IN Frames =====
-If you use the desktop image, you need to switch to the framebuffer console.
+You can use gstreamer to capture the HDMI IN frames. Here is en example to capture the HDMI IN frames
+and encoding them to ''H264'' format and mux to ''MP4'' format store in file ''/tmp/test71.mp4''.
 ```shell
-sudo chvt 3
+gst-launch-1.0 v4l2src device=/dev/video71 io-mode=dmabuf num-buffers=300 ! video/x-raw,format=NV12,width=1920,height=1080,framerate=30/1,interlace-mode=interleaved ! amlvenc ! h264parse ! qtmux ! filesink location=/tmp/test71.mp4
-echo 1 | sudo tee /sys/class/graphics/fb0/blank
+```
-echo 0 | sudo tee /sys/class/graphics/fb0/blank
+/*
+===== Preview the HDMI IN Frames on Gnome Desktop =====
+You can use gstreamer plugin ''clutterautovideosink'' to preview the HDMI IN frames on the Gnome desktop.
+```shell
+gst-launch-1.0 v4l2src device=/dev/video71 io-mode=dmabuf ! video/x-raw,format=NV12,width=1920,height=1080,framerate=30/1,interlace-mode=interleaved ! clutterautovideosink
 ```
 <WRAP tip >
-If you want to go back to the desktop ''sudo chvt 2''
+  * You can use ''Alt+F7'' to select the window and move mouse to move the window.
+  * It doesn't support fullscreen mode.
 </WRAP>
+*/
-===== Install HDMI Input Demo =====
+===== Preview the HDMI IN Frames on Framebuffer Console =====
+**HDMI input preview can only work under framebuffer console**, so you need to use the server image, you can install via OOWOW.
+If you use the desktop image, you need to switch to the framebuffer console.
 ```shell
-sudo apt update
+sudo chvt 3
-sudo apt install hdmiin-demo
 ```
+<WRAP tip >
+If you want to go back to the desktop ''sudo chvt 2''
+</WRAP>
-===== Test =====
-  * Connect your VIM4 HDMI Out to an HDMI Display
+==== Test ====
-  * Connect your HDMI OUT cable to VIM4 HDMI IN port
-  * Execute the HDMI Input demo command ''sudo hdmiin-demo''
+Execute the HDMI Input demo command ''sudo hdmiin-demo''
 If everything is OK you will see the HDMI Input source on your display.
-===== Known Issues =====

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