XvUngrabPort - release port grabbed for video operation
#include <X11/extensions/Xvlib.h>
int XvUngrabPort(Display *dpy, XvPortID port, Time time);
  - dpy
 
  - Specifies the connection to the X server.
 
  - port
 
  - Specifies the port to be released. If the port had not been previously
      grabbed, the request is ignored.
 
  - time
 
  - Specifies the request timestamp.
 
XvUngrabPort(3)
  
   releases a grabbed port. If time specifies a time before the last
    XvGrabPort(3) was executed, the request is ignored.
  - [Success]
 
  - Returned if XvUngrabPort(3) completed successfully.
 
  - [XvBadExtension]
 
  - Returned if the Xv extension is unavailable.
 
  - [XvBadAlloc]
 
  - Returned if XvUngrabPort(3) failed to allocate memory to process
      the request.
 
  - [XvBadPort]
 
  - Generated if the requested port does not exist.