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.