Linux环境下配置虚拟摄像头akvcam

下载源码

git clone https://github.com/webcamoid/akvcam.git

编译&安装

cd akvcam/src

make

sudo make dkms_install

确认是否安装驱动成功，如果有文件，则安装驱动成功

ls /lib/modules/$(uname -r)/extra/akvcam.ko*

可以使用如下命令卸载驱动

sudo make dkms_uninstall

配置虚拟摄像头

修改配置文件

sudo mkdir -p /etc/akvcam

sudo touch /etc/akvcam/config.ini

sudo chmod -vf 644 /etc/akvcam/config.ini

修改/etc/akvcam/config.ini，内容如下：

# Virtual camera configuration file example.

#

# Please, read the instructions to the end.

[Cameras]

# First at all you must define how many virtual cameras will be created.

cameras/size = 2

# Then, define it‘s properties.

#

# A virtual camera can be of 2 types: ‘capture‘ and ‘output‘.

# A ‘capture‘ device will be seen as a normal webcam by any webcam capture

# program.

# A ‘output‘ device will receive frames from a producer program and send it to

# one or many ‘capture‘ devices.

#

# A camera can have also 3 capture/output modes: ‘mmap‘, ‘userptr‘ and ‘rw‘.

# ‘mmap‘ is the most widely supported mode by far, enabling this is more than

# enough in most cases. ‘rw‘ allow you to "echo" or "cat" frames as raw data

# directly to the device using the default frame format. Enabling ‘rw‘ mode will

# disable emulated camera controls in the ‘capture‘ device (brightness,

# contrast, saturation, etc.).

# A device can support all 3 modes at same time.

#

# ‘formats‘ is a comma separated list of index in the format list bellow.

#

# It‘s also possible to set the device number by setting the ‘videonr‘ property,

# if for example videonr=7 the the device will be created as "/dev/video7".

# If ‘videonr‘ is already taken, negative or not set, the driver will assign the

# first free device number.

cameras/1/type = output

cameras/1/mode = mmap, userptr, rw

cameras/1/description = Virtual Camera (output device)

cameras/1/formats = 2

cameras/1/videonr = 7

cameras/2/type = capture

cameras/2/mode = mmap, rw

cameras/2/description = Virtual Camera

cameras/2/formats = 1, 2

[Formats]

# Define how many formats will be supported by the camera.

formats/size = 2

# Now define the frame pixel formats, resolutions and frame rates supported by

# the camera.

#

# Supported capture formats:

#

# RGB32

# RGB24

# RGB16

# RGB15

# BGR32

# BGR24

# UYVY

# YUY2

#

# Supported output formats:

#

# RGB24

# BGR24

#

# YUY2 640x480 is one of the most widely supported formats in webcam capture

# programs. First format defined is the default frame format for

# ‘capture‘/‘output‘.

# ‘width‘, ‘height‘ and ‘fps‘ are unsigned integers.

formats/1/format = YUY2

formats/1/width = 640

formats/1/height = 480

formats/1/fps = 30

# The parameters can also be specified as a comma separated list, so it‘s

# possible to combine the parameters to define several formats in one group.

# ‘fps‘ can also be defined as a fraction.

# The following lines will define 4 formats:

#

# RGB24 640x480 20 FPS

# RGB24 640x480 7.5 FPS

# YUY2 640x480 20 FPS

# YUY2 640x480 7.5 FPS

formats/2/format = RGB24, YUY2

formats/2/width = 640

formats/2/height = 480

formats/2/fps = 20/1, 15/2

# Finally, to create a fully working virtual camera, you must connect one

# ‘output‘ to one or many ‘capture‘ devices.

# Connections are made by index, separated by a colon. The first index is the

# ‘output‘ device, the following index are ‘capture‘ devices.

[Connections]

connections/size = 1

connections/1/connection = 1:2

# You can also define a default frame when a ‘capture‘ device is not receiving

# any input. Only 24 bpp and 32 bpp BMP files are supported.

[General]

# 修改此处的图片路径，只能是BMP格式的图片

default_frame = /etc/akvcam/default_frame.bmp

# This config will take effect on modprobe/insmod.

调试驱动

sudo modprobe akvcam loglevel=7

用法和例子

在前面的驱动和配置文件正常的情况下，使用如下命令加载驱动：

cd akvcam/src

sudo modprobe videodev

# 先卸载，再安装

sudo rmmod akvcam.ko

sudo insmod akvcam.ko

到此处已经虚拟摄像头已经配置好了,打开相机应用查看是否生效,

开机加载(非必需步骤)

要在启动时加载模块，请创建一个/etc/modules-load.d/akvcam.conf文件，然后在其中写入akvcam：

echo akvcam > /etc/modules-load.d/akvcam.conf

原文：https://www.cnblogs.com/Hiraly/p/14638342.html