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问题[camera](ubuntu)

Martin Hope
Kamal Hosseini
Asked: 2024-04-29 05:08:09 +0800 CST
  • 5

我安装了 ubuntu 24.04，在启动器中有相机应用程序的图标，但是当我打开它时，我收到消息说没有检测到相机，我下载了奶酪应用程序，它检测到了相机，所以我决定删除相机应用程序，当我搜索时软件商店中的相机应用程序要求我安装它，因此相机应用程序未安装，但启动器中有一个图标，我不知道如何删除该图标，最后我安装了相机应用程序，并出现了另一个相机图标，这次安装后它有效，但仍然不知道如何摆脱启动器中多余的相机图标。

camera
Martin Hope
Alex028502
Asked: 2021-05-09 06:10:14 +0800 CST
  • 6
$ ls -ltrh /dev/video*
crw-rw----+ 1 root video 81, 1 Mai  4 00:17 /dev/video1
crw-rw----+ 1 root video 81, 0 Mai  4 00:17 /dev/video0

这是一台笔记本电脑，所以我猜一个是内置摄像头，一个是屏幕。但是我怎样才能检查哪个？有没有办法获得有关其中一个的更多信息？

camera
Martin Hope
Hirusha
Asked: 2021-02-22 18:01:15 +0800 CST
  • 0

我有一个内置摄像头，我想更改 Ubuntu 的摄像头访问权限！在 Windows 中，我可以简单地转到隐私 > 相机并关闭访问！但是如何在 Ubuntu 中做到这一点？

编辑：我找到了一种暂时禁用相机的方法

要暂时禁用相机 - sudo modprobe -r uvcvideo

要启用它 -sudo modprobe uvcvideo

camera
Martin Hope
cyx
Asked: 2020-11-18 06:20:53 +0800 CST
  • 1

系统信息

  • 制造商：惠普
  • 产品名称：惠普笔记本电脑 15s-eq0xxx
  • Ubuntu 20.04 LTS
  • Telegram 应用程序版本 2.4.7

    我无法在 Telegram 桌面应用程序中使用我的摄像机。"No camera could be found. Please make sure that your camera is connected to the computer."当我点击视频按钮时。
    环聊和 Zoom 一切正常。
video camera telegram
Martin Hope
Thomas
Asked: 2020-11-08 02:06:32 +0800 CST
  • 1

按照说明安装v4l2loopback内核模块和gphoto2.
我可以使用 控制相机和拍照Entangle，还可以在其中查看实时预览视频Entangle，但我无法使用 ffmpeg 流式传输视频以在其他应用程序中使用它。

$ gphoto2 --abilities
Abilities for camera             : Sony DSC-RX100M4                            
Serial port support              : no
USB support                      : yes
Capture choices                  :
                                 : Image
                                 : Preview
                                 : Trigger Capture
Configuration support            : yes
Delete selected files on camera  : yes
Delete all files on camera       : no
File preview (thumbnail) support : yes
File upload support              : yes

杀死所有现有实例

$ sudo killall gvfs-gphoto2-volume-monitor
gvfs-gphoto2-volume-monitor: no process found

有 3 个 /dev/video*

$ ll /dev/video*
crw-rw----+ 1 root video 81, 0 Nov  7 08:46 /dev/video0
crw-rw----+ 1 root video 81, 1 Nov  7 08:46 /dev/video1
crw-rw----+ 1 root video 81, 2 Nov  7 09:35 /dev/video2

运行将视频传送到 /dev/video* 的命令对其中任何一个都不起作用：

$ gphoto2 --stdout --capture-movie | gst-launch-1.0 fdsrc ! decodebin3 name=dec ! queue ! videoconvert ! v4l2sink device=/dev/video2
Capturing preview frames as movie to 'stdout'. Press Ctrl-C to abort.
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Sink:v4l2sink0: Device '/dev/video2' is not a output device.
Additional debug info:
v4l2_calls.c(636): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Sink:v4l2sink0:
Capabilities: 0x85208000
Setting pipeline to NULL ...
Freeing pipeline ...

*** Error ***              
Sorry, your Sony camera does not seem to return a JPEG image in LiveView mode
ERROR: Movie capture error... Exiting.
Movie capture finished (0 frames)

如官方说明中所述，我尝试了在相机上的 AUTO 和 MOVIE 模式之间切换的不同方法，但没有运气......

知道我错过了什么吗？

是否Sorry, your Sony camera does not seem to return a JPEG image in LiveView mode意味着它不适用于我的相机？( Sony DSC-RX100M4)

另一个命令（ffmpeg）：

$ gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video1
Capturing preview frames as movie to 'stdout'. Press Ctrl-C to abort.
ffmpeg version n4.1.4 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
  configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-avisynth --enable-cuda --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
[mjpeg @ 0x55bb2836b0c0] Format mjpeg detected only with low score of 25, misdetection possible!
Input #0, mjpeg, from 'pipe:':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 1024x680, 25 tbr, 1200k tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> rawvideo (native))
[swscaler @ 0x55bb283bef00] deprecated pixel format used, make sure you did set range correctly
[video4linux2,v4l2 @ 0x55bb28370dc0] Unable to open V4L2 device '/dev/video1'
Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted
Error initializing output stream 0:0 -- 
Conversion failed!
sony video usb webcam camera
Martin Hope
Eduardo Mendes
Asked: 2020-08-16 10:10:34 +0800 CST
  • 2

ubuntu 的新内核版本（4.4.0-186-generic 和 4.4.0-187-generic）无法识别我的 USB 摄像头（无论是笔记本电脑的原始版本还是其他 USB 网络摄像头）。如果我从以前的内核版本（4.4.0-185-generic）开始，两者都可以正常工作。

这是“lsusb”的结果：...

Bus 001 Device 003: ID 04f2:b537 Chicony Electronics Co., Ltd 
Bus 001 Device 009: ID 046d:0892 Logitech, Inc. OrbiCam

...

但它们不显示为 /dev/video0 和 /dev/video1，并且无法被奶酪、缩放、相遇等检测到。

这些内核版本是否需要任何额外的驱动程序，或者它真的坏了？

谢谢

kernel usb webcam camera 16.04
Martin Hope
Torsten
Asked: 2020-08-10 01:39:22 +0800 CST
  • 0

我正在尝试按照以下建议将我的佳能 dslr 作为网络摄像头连接到 ubuntu：使用数码相机（佳能）作为网络摄像头

但是，KDE Plasma 一直在安装相机，因此 gphoto 无法使用它。通过 nautilus 或 dolphin 卸载/弹出它没有帮助。当我这样做时，相机被“卸载”并且上下文菜单中的唯一选项是再次安装它。

但是，gphoto 仍然无法访问相机：pipe:: Invalid data found when processing input

nautilus kde mount webcam camera
Martin Hope
lrkwz
Asked: 2020-07-09 04:00:23 +0800 CST
  • 0

除了文件传输，我无法连接我的索尼 A7RII 相机；lsusb显示与相机无关的输出。

安装了最新gphoto2版本并gphoto2 --list-cameras| grep -i "A7R II"声称支持相机（libgphoto2 网页粗体显示“图像捕捉、触发捕捉、实时取景、配置”功能）。

远程文档警告使用libgphoto2 2.5.13 或更新版本（我已经检查过）。

以下是is的env LANG=C gphoto2 --debug --debug-logfile=my-logfile.txt --config输出

*** Error ***              
Could not detect any camera
*** Error (-105: 'Unknown model') ***  

0.000002 main                        (2): ALWAYS INCLUDE THE FOLLOWING LINES WHEN SENDING DEBUG MESSAGES TO THE MAILING LIST:
0.000033 main                        (2): gphoto2 2.5.23
0.000058 main                        (2): gphoto2 has been compiled with the following options:
0.000060 main                        (2):  + gcc (C compiler used)
0.000061 main                        (2):  + popt (mandatory, for handling command-line parameters)
0.000063 main                        (2):  + exif (for displaying EXIF information)
0.000065 main                        (2):  + cdk (for accessing configuration options)
0.000066 main                        (2):  + aa (for displaying live previews)
0.000068 main                        (2):  + jpeg (for displaying live previews in JPEG format)
0.000089 main                        (2):  + readline (for easy navigation in the shell)
0.000093 main                        (2): libgphoto2 2.5.24
0.000112 main                        (2): libgphoto2 has been compiled with the following options:
0.000115 main                        (2):  + standard camlib set SKIPPING SOME (ax203 canon digigr8 dimagev directory jl2005a jl2005c kodak_dc240 mars pentax ptp2 ricoh_g3 sierra sonix sq905 st2205 topfield tp6801 SKIPPING lumix)
0.000116 main                        (2):  + gcc (C compiler used)
0.000118 main                        (2):  + ltdl (for portable loading of camlibs)
0.000120 main                        (2):  + EXIF (for special handling of EXIF files)
0.000122 main                        (2): libgphoto2_port 0.12.0
0.000124 main                        (2): libgphoto2_port has been compiled with the following options:
0.000126 main                        (2):  + iolibs: disk ptpip serial usb1 usbdiskdirect usbscsi
0.000128 main                        (2):  + gcc (C compiler used)
0.000129 main                        (2):  + ltdl (for portable loading of iolibs)
0.000131 main                        (2):  + EXIF (for vusb)
0.000133 main                        (2):  + USB (libusb1, for USB cameras)
0.000134 main                        (2):  + serial (for serial cameras)
0.000136 main                        (2):  + no resmgr (serial port access and locking)
0.000137 main                        (2):  + no ttylock (serial port locking)
0.000139 main                        (2):  + no lockdev (serial port locking)
0.000141 main                        (2): CAMLIBS env var not set, using compile-time default instead
0.000143 main                        (2): IOLIBS env var not set, using compile-time default instead
0.000144 main                        (2): invoked with following arguments:
0.000146 main                        (2):   --debug
0.000148 main                        (2):   --debug-logfile=my-logfile.txt
0.000149 main                        (2):   --config
0.000171 load_settings               (2): Creating gphoto config directory ('/home/lrkwz/.gphoto')
0.000204 load_settings               (2): Loading settings from file '/home/lrkwz/.gphoto/settings'.
0.000258 main                        (2): The user has not specified both a model and a port. Try to figure them out.
(...)
usb camera 20.04 gphoto2
Martin Hope
nobody
Asked: 2020-04-25 23:04:59 +0800 CST
  • 0

在我的

# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x000E, DMI type 1, 27 bytes
System Information
        Manufacturer: LENOVO
        Product Name: 2350B58
        Version: ThinkPad T430
        Serial Number: PBVVBLH
        UUID: cdcb8a01-5190-11cb-9490-98976e1f3194
        Wake-up Type: Power Switch
        SKU Number: LENOVO_MT_2350
        Family: ThinkPad T430

是一个内置摄像头，但我在 /dev 中有两个设备节点。

ls -ltrh /dev/video*
crw-rw----+ 1 root video 81, 1 Apr 25 08:23 /dev/video1
crw-rw----+ 1 root video 81, 0 Apr 25 08:23 /dev/video0

质量低。

lsusb | grep camera
Bus 001 Device 006: ID 04f2:b2db Chicony Electronics Co., Ltd Thinkpad T430 camera

udevadmin 测试

运行内核

 uname -r   5.3.0-46-generic

我的系统是从 ubuntu 19.04 升级而来的。

camera 19.10