Ich habe keine relevante und aktuelle Antwort auf SO gefunden.

Hier ist der Code, den ich gerade verwende, alle Anfragen werden korrekt bearbeitet, aber es wird kein Video gepostet?

if let userID = Twitter.sharedInstance().sessionStore.session()?.userID {
    var client = TWTRAPIClient(userID: userID)

    let text: String = "Testing Video"
    let videoLength: String = "\(self.video.length)"
    print(videoLength)
    var initError: NSError?
    var message = ["status": text, "command" : "INIT", "media_type" : "video/m4v", "total_bytes" : videoLength]
    let preparedRequest: NSURLRequest = client.URLRequestWithMethod("POST", URL: self.strUploadUrl, parameters: message, error: &initError)
    client.sendTwitterRequest(preparedRequest, completion: { (urlResponse: NSURLResponse?, responseData: NSData?, error: NSError?) -> Void in
        if error == nil {

            do {


                let json: NSDictionary = try (NSJSONSerialization.JSONObjectWithData(responseData!, options: NSJSONReadingOptions(rawValue: 0)) as? NSDictionary)!
                print("JSON is \(json)")


                let mediaID = json.objectForKey("media_id_string") as! String

                client = TWTRAPIClient(userID: userID)
                var uploadError: NSError?
                let videoString = self.video.base64EncodedStringWithOptions([])

                message = ["command" : "APPEND", "media_id" : mediaID, "segment_index" : "0", "media" : videoString]
                let preparedRequest = client.URLRequestWithMethod("POST", URL: self.strUploadUrl, parameters: message, error: &uploadError)
                client.sendTwitterRequest(preparedRequest, completion: { (urlResponse: NSURLResponse?, responseData: NSData?, error: NSError?) -> Void in
                    if error == nil {
                        client = TWTRAPIClient(userID: userID)
                        var finalizeError: NSError?
                        message = ["command":"FINALIZE", "media_id": mediaID]
                        let preparedRequest = client.URLRequestWithMethod("POST", URL: self.strUploadUrl, parameters: message, error: &finalizeError)
                        client.sendTwitterRequest(preparedRequest, completion: { (urlResponse: NSURLResponse?, responseData: NSData?, error: NSError?) -> Void in
                            if error == nil {
                                client = TWTRAPIClient(userID: userID)
                                var sendError: NSError?
                                let message = ["status": text, "wrap_links": "true", "media_ids": mediaID]
                                //var updateMessage = NSMutableDictionary(dictionary: message)
                                let preparedRequest = client.URLRequestWithMethod("POST", URL: self.strStatusUrl, parameters: message , error: &sendError)
                                client.sendTwitterRequest(preparedRequest, completion: { (urlResponse: NSURLResponse?, responseData: NSData?, error: NSError?) -> Void in

                                })
                            } else {
                                print("Command FINALIZE failed \n \(error!)")
                            }
                        })
                    } else {
                        print("Command APPEND failed")
                    }
                })
            }

            catch {
                print("\(error)")
            }
        }

        else {
            print("\(error.debugDescription)Command INIT failed")
        }
    })
    }

Aller obige Code funktioniert, außer dass das Video nicht hochgeladen wird. Ich kann nicht herausfinden, was ich vermisse und die Dokumentation von Twitter ist beim Posten von Videos sehr mangelhaft.