i have same problem while runnning following commond.

nvidia@miivii-tegra:/opt/miivii/features/gmsl_camera$ ./bin/cameras_opencv_demo -s 5120x720 -d /dev/video0
MiiVii GMSL-Camera SDK Version: 0.0.0  
Producer mode.
fmt.fmt.pix.width 5120
fmt.fmt.pix.height 720
fmt.fmt.pix.pixelformat 1448695129
libv4l2_nvvidconv (0)802) (INFO) : Allocating (10) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)818) (INFO) : Allocating (10) CAPTURE PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)802) (INFO) : Allocating (10) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)818) (INFO) : Allocating (10) CAPTURE PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)802) (INFO) : Allocating (10) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)818) (INFO) : Allocating (10) CAPTURE PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)802) (INFO) : Allocating (10) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)818) (INFO) : Allocating (10) CAPTURE PLANE BUFFERS Layout=0
10-bit Bayer RGRG/GBGB
device like buffer count: 4
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera type in group A is sensing
Camera type in group B is sensing
Gtk-Message: 19:48:33.201: Failed to load module "canberra-gtk-module"

my camera type is sensing ,i have the same connection with the other one which can normal display!

暒2576 发表于 2021-5-26 20:12
my camera type is sensing ,i have the same connection with the other one which can normal display!

Hi

Could you provide the device type, and system version?

1. cat/etc/miivii_release

复制代码

And how many cameras you connect?

4.4.1.1 连接了4台相机

nvidia@miivii-tegra:/opt/miivii/features/gmsl_camera$ ./bin/cameras_opencv_demo -s 1280x720 -d /dev/video0
MiiVii GMSL-Camera SDK Version: 0.0.0  
Producer mode.
fmt.fmt.pix.width 1280
fmt.fmt.pix.height 720
fmt.fmt.pix.pixelformat 1448695129
libv4l2_nvvidconv (0)802) (INFO) : Allocating (10) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0)818) (INFO) : Allocating (10) CAPTURE PLANE BUFFERS Layout=0
10-bit Bayer RGRG/GBGB
device like buffer count: 4
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
Camera v4l2mmbuffer buf length is not expected: Invalid argument
VIDIOC_STREAMON: Invalid argument

VIDIOC_STREAMON: Invalid argument??

暒2576 发表于 2021-5-26 21:27
4.4.1.1 连接了4台相机

那我的理解是您使用的是Apex Xavier，镜像版本是4.4-1.1.0，对吧？
然后您的意思是说，有两台Apex Xavier，一共4个相机，连接方式相同，并且使用同样的命令。
但是这4个相机，在A设备上没有问题，在B设备上存在问题，用同样的命令无法打开？

最好能够拍下相机的连接照片给我们。
从命令上看，应该是没有问题的。
操作命令可以参考：
https://doc.miivii.com/pages/viewpage.action?pageId=5276043

我这边有6台Apex Xavier,  三台是4.4-1.1.0版本,其他两台都可以正常启动.

连接是从Ａ1口开始，直到Ａ4口，只连接４个相机，Ｂ口没有插相机．相机我一个一个试了，没有问题．现在这台米文，我该怎么使用，opencv demo 和ros demo 没有图像出现．

暒2576 发表于 2021-5-26 22:06
连接是从Ａ1口开始，直到Ａ4口，只连接４个相机，Ｂ口没有插相机．相机我一个一个试了，没有问题．现在这台 ...

您好：

您的连接方法是没问题的。
这种情况还是比较奇怪的，也是第一次碰到。

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