XvUngrabPort - release port grabbed for video operation
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.
releases a grabbed port. If time specifies a time before the last
XvGrabPort(3) was executed, the request is ignored.
Returned if XvUngrabPort(3) completed successfully.
Returned if the Xv extension is unavailable.
Returned if XvUngrabPort(3) failed to allocate memory to
process the request.
Generated if the requested port does not exist.