def getHash(self):
     """Video.getHash() -> file hash"""
     if self.host is None:
         return None
     be = FileOps(db=self._db)
     hash = be.getHash(self.filename, 'Videos', self.host)
     return hash

 def getRecStatus(self):
     be = FileOps(db=self._db)
     for prog in be._getPrograms('QUERY_GETALLPENDING', header=1):
         if (prog.chanid == self.chanid) and \
                 (prog.starttime == self.starttime):
             return prog.recstatus
     return 0

 def downloadFrom(self, url):
     if self.parent is None:
         raise RuntimeError("Artwork.downloadFrom must be called from "+\
                            "object, not class.")
     be = FileOps(self.hostname, db=self.parent._db)
     be.downloadTo(url, self.imagetype, self)

 def exists(self):
     be = FileOps(self.hostname, db = self.parent._db)
     return be.fileExists(unicode(self), self.imagetype)