Updated Configure the cameras (markdown)

Configure-the-cameras.md

@@ -1,11 +1,135 @@
-**In-progress**
-
 Please read [Build and install](https://github.com/webcamoid/akvirtualcamera/wiki/Build-and-install) page before going further.
 
-## Defining the devices ##
+## Quick rundown
 
-## Defining the formats ##
+The first step to create a virtual camera is defining a virtual device:
 
-## Updating the devices ##
+```
+AkVCamManager add-device "Virtual Camera"
+```
 
-## No signal picture ##
+The command will return a message like:
+
+```
+Device created as AkVCamVideoDevice0
+```
+
+Keep track of **AkVCamVideoDevice0**, that will be the identifier of the virtual device and you will need it for the following operations. The created device is a blank device without any defined capture formats, that meaning it won't work as-is.  
+Now, you must define a at least one capture format for that device, as:
+
+```
+AkVCamManager add-format AkVCamVideoDevice0 FORMAT WIDTH HEIGHT FRAME_RATE
+```
+
+For example:
+
+```
+AkVCamManager add-format AkVCamVideoDevice0 YUY2 640 480 30
+```
+
+You can list all capture formats with:
+
+```
+AkVCamManager supported-formats --output
+```
+
+The frame rate can be expressed either as an integer or a fraction, for example 15/2.  
+Once you finished defining your devices, you must obligatorily apply the changes to the system with.
+
+```
+AkVCamManager update
+```
+
+**Note**: You must run an update every time you modify any parameter of the virtual camera. Also **NEVER** modify the virtual camera parameters when a client is running it.
+
+## Managing the devices
+
+List all devices:
+
+```
+AkVCamManager devices
+```
+
+You can remove a device with:
+
+```
+AkVCamManager remove-device AkVCamVideoDevice0
+```
+
+Or you can remove all devices:
+
+```
+AkVCamManager remove-devices
+```
+
+You can change the device description with:
+
+```
+AkVCamManager set-description AkVCamVideoDevice0 "My Virtual Camera"
+```
+
+Or get the device description with:
+
+```
+AkVCamManager description AkVCamVideoDevice0
+```
+
+## Managing the formats
+
+List all formats:
+
+```
+AkVCamManager formats AkVCamVideoDevice0
+```
+
+Add a new format at a given index:
+
+```
+AkVCamManager add-format --index 5 AkVCamVideoDevice0 YUY2 640 480 30
+```
+
+Remove a device format at INDEX with:
+
+```
+AkVCamManager remove-format AkVCamVideoDevice0 INDEX
+```
+
+Remove all device formats:
+
+```
+AkVCamManager remove-formats AkVCamVideoDevice0
+```
+
+You can get the default recommended output format with:
+
+```
+AkVCamManager default-format --output
+```
+
+## No signal picture
+
+When a client program try to play the virtual camera but it isn't receiving any frame, it will show a random dot pattern, you can change it to show a custom picture instead with:
+
+```
+AkVCamManager set-picture /path/to/place_holder_picture.png
+```
+
+And you can get place holder picture path again with:
+
+```
+AkVCamManager picture
+```
+
+You must give a full path to a picture file, the supported formats for the picture are:
+
+* BMP (24 bpp and 32 bpp).
+* JPG
+* PNG
+
+## Loading configurations from a file
+
+**In-progress**
+
+```
+AkVCamManager load settings.ini
+```