Sharing video on Facebook fails

I am sharing a video on Facebook using Facebook SDK 3.1.1. I have mentioned the code here. ``` FBRequestConnection *newConnection = [[FBRequestConnection alloc] init]; // for each fbid in the array, we create a request object to fetch // the profile, along with a handler to respond to the results of the request NSString *fbid = @"me"; // create a handler block to handle the results of the request for fbid's profile FBRequestHandler handler = ^(FBRequestConnection *connection, id result, NSError *error) { // output the results of the request [self requestCompleted:connection forFbID:fbid result:result error:error]; }; // create the request object, using the fbid as the graph path // as an alternative the request* static methods of the FBRequest class could // be used to fetch common requests, such as /me and /me/friends NSData *videoData = [NSData dataWithContentsOfFile:path]; NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys: videoData, @"video.mov", @"video/quicktime", @"contentType", @"Video", @"title", @"Video Test Description", @"description", @"hello",@"subdescription", nil]; FBRequest *request = [[FBRequest alloc] initWithSession:theDelegate.session graphPath:@"me/videos" parameters:params HTTPMethod:@"POST"]; //:FBSession.activeSession graphPath:@"me/?fields=location"]; // add the request to the connection object, if more than one request is added // the connection object will compose the requests as a batch request; whether or // not the request is a batch or a singleton, the handler behavior is the same, // allowing the application to be dynamic in regards to whether a single or multiple // requests are occuring [newConnection addRequest:request completionHandler:handler]; // if there's an outstanding connection, just cancel [self.requestConnection cancel]; // keep track of our connection, and start it self.requestConnection = newConnection; [newConnection start]; ``` It was working properly earlier. I get the shared Video Id in response every time I initiate an upload video request. But I keep getting the following message when I check my profile on FB in the notifications. Your Video could not be processed. Visit the Video help page to learn about common problems I have tried this with different AppIds. Uploading video is working though when I upload it using Facebook website.