ScreenCaptureStart

Starts screen capturing immediately.
This allows adhoc screen capturing even outside of phone calls.

Positive result:

• 'OK'
  • only two letters are returned
  • OK is returned even if screen capturing was already enabled

Failure result:

• 'ERROR:<code>:<description>'
  • the first 5 characters of the response are 'ERROR'
  • followed by a ':' (colon)
  • <code> is a 4 character error code
  • followed by a ':' (colon)
  • <description> textual description of the error

Defined error codes:

• 'AUTH' - request authentication error
• 'WRST' - wrong state, capturing has been started already