How can I access the camera app in Windows 8.1 using the command prompt. I want to access the camera from within another program (OpenInsight). Thanks for any help

You can use PowerShell :

Open Windows Store apps from the desktop or taskbar in Windows 8 (PowerShell)

Hi rprdds,

There is not a straight method to open the windows store apps from the command line .
As for the power shell posted by S.Sengupta,I have made a test .It seems not work in Windows8.1 or something I have missed.
 
Fortunately ,I found out a method refferring to this link(The code posted by Diogo) :
How do I run a Metro-Application from the command-line in Windows 8?
http://superuser.com/questions/433477/how-do-i-run-a-metro-application-from-the-command-line-in-windows-8

Save the following command as metro.vbs.

Set objShell = WScript.CreateObject("WScript.Shell")
objShell.SendKeys "^{ESC}"
WScript.Sleep 1000
objShell.SendKeys WScript.Arguments.Item(0)
WScript.Sleep 1000
objShell.SendKeys "{ENTER}"

And then open a command line ,input "cscript (path to the vbs file) camara".

It will open the camara app though it is a little slow.I hope it will meet your purpose.

Best r