HDMI Input Not Working, Ubuntu 24.04

VIM4
1

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu

Which version of system do you use? Please provide the version of the system here:

Ubuntu 24.04, kernel 5.15.119

Please describe your issue below:

The gstreamer method as prescribed here does not work:
https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input-5.15

The hdmiin_demo does work and shows my source, but the gstreamer method will not save to file, nor will it display if using autovideosink.

My user is a member of group “video” and I have tried also with sudo. The encoded file in tmp is always zero size.

I have been trying this in a console on the desktop.

Post a console log of your issue below:


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
Setting pipeline to PAUSED ...
[API:aml_v4l2src_connect:271]Enter, devname : /dev/video71
driver : vdin_video
device : mesont7
bus_info : vdin1 v4l2
version : 539099424
strcmp cap.driver: vdin_video
func_name: aml_src_get_hdmi_method
initialize func addr: 0x7f9e6b0cbc
finalize func addr: 0x7f9e6b0ff0
start func addr: 0x7f9e6b1198
stop func addr: 0x7f9e6b12d8
change_divide_framerate, L69, dev /dev/video71, change_frame 1
change_divide_framerate L91 Set framerate div 2 success
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:102:hdmi_src_initialize]enter
USERNAME    4914  0.0  0.0  80764  3904 pts/0    S    16:54   0:00 hdmictrl
USERNAME    5242  0.0  0.0   2380   816 pts/1    S+   17:24   0:00 sh -c -- ps -aux | grep hdmictrl
USERNAME    5244  0.0  0.0   6140  2016 pts/1    S+   17:24   0:00 grep hdmictrl
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:68:hdmi_src_obtain_devname]enter
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:79:hdmi_src_obtain_devname]hdmi_src_obtain_devname, pid=5245
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:87:hdmi_src_obtain_devname]hdmi_src_obtain_devname end, pid=5245
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:79:hdmi_src_obtain_devname]hdmi_src_obtain_devname, pid=0
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmisrc.c:83:hdmi_src_obtain_devname]ready to execl /usr/bin/hdmictrl, pid=0
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmictrl.c:304:main]enter, prepare enter hdmi_rx_svctx_init
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmictrl.c:256:hdmi_rx_svctx_init]enter
[2024-08-19 17:24:53]  DEBUG  [amlv4l2src hdmictrl.c:264:hdmi_rx_svctx_init]prepare get the GetInstance
2

Hello @DoomMonkey

I will verify this issue later.

3

Hello @DoomMonkey
1.You must connect your VIM4 to a workablbe HDMI screen or the HDMI IN will not working.
https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input-5.15

2.Below are my test results.

khadas@Khadas:~$ ll /tmp/test71.mp4 
-rw-rw-r-- 1 khadas khadas 576907 Aug 20 03:04 /tmp/test71.mp4

Screenshot from 2024-08-20 11-06-13
Screenshot from 2024-08-20 11-06-131925×1129 209 KB

4

Ivan, thank you for looking into this. I do have a display hooked up to the HDMI out. I am logged into the Ubuntu desktop on this display and attempting to execute the gstreamer pipeline from a terminal on this desktop.

The source that I am using to feed the HDMI input does work with the other method of using hdmiin_demo application.

5

If it makes any difference, I believe my VIM4 is the model without an NPU.

7

Hello @DoomMonkey
1.I use the same model of VIM4 as you,try the following firmware：

https://dl.khadas.com/products/vim4/firmware/ubuntu/generic/ubuntu-24.04/vim4-ubuntu-24.04-gnome-linux-5.15-fenix-1.6.9-240618.img.xz

2.The command I used.

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