has anyone used microsoft expression encoder SDK to do server side encoding of videos to preapare it for silverlight adaptive streaming?
What is your experience with it?
I made a windows service for encoding movie files to create Adaptive Streaming files on the fly once uploaded. The downside for me was that I wanted to store the adapative stream files inside a database. The only option to achieve this was to create your own WIN32 File API or some sort of WebDav system which can return the filestreams. You can't create your own extention of SmoothStreamHandler to get your filestream other ways (like from database or whatever).
Beware that it eats up all CPU's you have in your system, so dont run this on your webserver but have a seperate server for it. Also the server doesn't have to have much memory as it doesn't have a 64-bit version so it cant use more as 3,2gb. Just CPU power and some fast disks would be best.
There are also hardware solutions which support Silverlight Adaptive Streaming, like Elemental Server.
The SDK itself is rather easy to use:
Sample:
private void ProcessFile(string filename, string outputFolder)
{
try
{
MediaItem mediaItem;
AdvancedVC1VideoProfile videoProfile = new AdvancedVC1VideoProfile();
videoProfile.SmoothStreaming = true;
videoProfile.AdaptiveGop = false;
videoProfile.Streams.RemoveAt(0);
try
{
mediaItem = new MediaItem(filename);
// Add streams
videoProfile.Streams.Add(new ConstantBitrate(1450), new Size(848, 480));
videoProfile.Streams.Add(new ConstantBitrate(1050), new Size(592, 336));
videoProfile.Streams.Add(new ConstantBitrate(600), new Size(424, 240));
mediaItem.OutputFormat.VideoProfile = videoProfile;
}
catch (InvalidMediaFileException ex)
{
Console.WriteLine(ex.Message);
return;
}
using (Job job = new Job())
{
job.MediaItems.Add(mediaItem);
job.OutputDirectory = outputFolder;
job.CreateSubfolder = false;
job.EncodeProgress += (object sender, EncodeProgressEventArgs e) =>
{
// Trace progress..
};
job.Encode();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
}
Related
I'm working with LDAP Microsoft Active Directory and Domino server and quite new with this.
we've successfully fetched all Microsoft Active Directory users in Domino via java Agent and have printed all the user names in java debug console. For that referred this http://lotus-blogs.blogspot.in/2009/08/ldap-programming-using-domino-java-step.html link.
Now, i want to get all users in Domino Xpages NamePicker, so is this possible to get all users in Xpages NamePicker via java Agent?
As per we see that in Xpages NamePicker, we are able to fetch the Domino Users with the help of java beans.
Any kind of suggestion will be really Appreciated.
My java Agent is like following-
import lotus.domino.*;
public class JavaAgent extends AgentBase {
public void NotesMain() {
try {
Session session = getSession();
AgentContext agentContext = session.getAgentContext();
LDAPQuery.ldapconnect();
} catch(Exception e) {
e.printStackTrace();
}
}
}
AND
import javax.naming.*;
import javax.naming.directory.*;
import java.util.*;
public class LDAPQuery {
public static void ldapconnect(){
String isFound="0";
try {
System.out.println("inside try 1");
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "PROVIDER_URL");
env.put(Context.SECURITY_PRINCIPAL, "UserName");
env.put(Context.SECURITY_CREDENTIALS, "password");
// Create initial context
DirContext ctx = new InitialDirContext(env);
// Specify the ids of the attributes to return
String[] attrIDs = {"cn","mail"};
SearchControls ctls = new SearchControls();
ctls.setReturningAttributes(attrIDs);
ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);
String filter = "(&(objectCategory=person)(mail=*abc.com))";
System.out.println("filter defined");
// Search for objects that have those matching attributes
NamingEnumeration answer = ctx.search("", filter,ctls);
System.out.println("get the answer!");
try {
System.out.println("inside try2");
while (answer.hasMore())
{
SearchResult sr = (SearchResult)answer.next();
System.out.println("<<" + sr.getName()+">>");
Attributes attrs = sr.getAttributes();
//System.out.println(sr.getName().matches("/^[0-9]/"));
System.out.println(attrs.get("cn").get());
System.out.println(attrs.get("mail").get());
isFound="1";
}
if ( isFound=="1") {
System.out.println("User found in Active Directory!");
} else {
System.out.println("Opps ! User not found in Active Directory!");
}
answer.close();
}catch(PartialResultException e) {
System.out.println("catch 2");
e.printStackTrace();
}
// Close the context when we're done
ctx.close();
} catch (Exception e) {
System.out.println("catch 1");
e.printStackTrace();
}
}
public LDAPQuery() {
// Don't think I'm doing anything here
}
}
OK, got it.
Any particular reason why you are utilizing an Agent as opposed to using a true bean? Calling an agent everytime someone opens the name picker in my opinion is far from being effective.
Apart from that I don't see a way how the results from your agent could directly be passed into the name picker.
Third: looking at your ldap filter I'm sure that your code will return hundreds or even thousands of names. Using a standard ExtLib NamePicker is no fun for your users, believe me: the list of names displayed per dialog page is way too limited. But that may be a different story.
Sticking to the namePicker approach there are several ways how you could achieve what you appear to accomplish:
refactor your java agent into a javaBean then feed the result to the control
consider going for a directory syncing tool like IBM TDI; thus your AD data can be pushed into a Domino directory of your choice, and then from within your application you can utilize standard name lookup features
I am trying my hands on Windows phone 8 applications and I am stuck into a weird situation here. I am using sqlite in order to create sqlite db and add values into the database. I am able to create the database and add the values in the database successfully but I am having a weird situation here.
Everytime I close the emulator and start the project again the database gets created again which should not be happening because I created the db the very first time I run the application.
Does anybody know why, and how I can prevent it from recreating the database each time?
public string DB_PATH = Path.Combine(Path.Combine(ApplicationData.Current.LocalFolder.Path, "aa.sqlite"));
private SQLiteConnection dtCon;
public MainPage()
{
InitializeComponent();
CreateDatabase();
dtCon = new SQLiteConnection(DB_PATH);
var tp = dtCon.Query<Contacts>("select * from contacts").ToList();
}
private async void CreateDatabase()
{
bool isDatabaseExisting = false;
//Checking if database already exists
try
{
Windows.Storage.StorageFile storagefile = await Windows.Storage.ApplicationData.Current.LocalFolder.GetFileAsync("aa.sqlite");
isDatabaseExisting = true;
}
catch
{
isDatabaseExisting = false;
}
//if not exists then creating database
if (!isDatabaseExisting)
{
String str = System.IO.Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "sqlite.db");
AddDataToDB(DB_PATH);
}
}
private void AddDataToDB(string str)
{
// Create the database connection.
dtCon = new SQLiteConnection(str);
// Create the table Task, if it doesn't exist.
dtCon.CreateTable<Contacts>();
Contacts oContacts = new Contacts();
oContacts.Name = "dfgdf";
oContacts.Detail = "asdfsf";
dtCon.Insert(oContacts);
}
I'm pretty sure when you close your emulator and restart, you're basically just uninstalling the application. Which is why your files or not there anymore -- as it looks like you're storing your data in isolated storage. I do not know if there is anyway around this.
You can buy a very cheap Windows 8/8.1 Phone and the files will persist until you manually uninstall the test application.
As #Chubosaurus says, closing and re-opening the emulator will remove all the apps. You can generally keep it running as long as you want and keep re-deploying your app to the emulator (although obviously rebooting the host PC will kill it).
You can save and restore the data from your emulator image via the ISETool command. See more here
Try adding Console.WriteLine("True"); and Console.WriteLine("False"); into the expected places after checking isDatabaseExisting to see/understand what the code path really is.
I would like to access the same db file from different programs in parallel. All programs are running on the same VM. Here is the code I use:
private ObjectContainer db;
public DatabaseManager(String dbName) {
ObjectServer server = Db4oClientServer.openServer(Db4oClientServer
.newServerConfiguration(), dbName, 0);
try {
db = server.openClient();
// Do something with this client, or open more clients
} catch(Exception ex) {
ex.printStackTrace();
}
}
When I run the second program I get DatabaseFileLockedException. How to use this db in parallel?
Only one db4o instance can access the database file at the same time. If you try to reopen it while a object container has it open you will get this DatabaseFileLockedException.
Within the same JVM instance you can open new session containers like this:
ObjectContainer rootContainer = // the one you've opened the file with
ObjectContainer session = rootContainer.ext().openSession()
With your code you also can use the .openClient() method to do the same. However you actually don't need the client server stuff as long as you're in the same JVM instance. You can use the stuff above with a regular embedded object container.
In case you need to access the same database from multiple databases, then you need a full blown client-server setup.
I have an IPC problem. I have created into a windows service a NamedPipeServer:
serverPipe = new NamedPipeServerStream(Constants.PIPE_NAME, PipeDirection.InOut, 1, PipeTransmissionMode.Message, PipeOptions.Asynchronous);
Thread thread = new Thread(new ThreadStart(pipeWork));
thread.Start();
where pipeWork is
private static void pipeWork()
{
try
{
byte[] buffer = new byte[1024];
while (true)
{
if (!serverPipe.IsConnected)
serverPipe.WaitForConnection();
int nr = serverPipe.Read(buffer, 0, buffer.Length);
String str=Encoding.Default.GetString(buffer);
…
}
}
catch (Exception ex)
{
}
}
and into a Windows forms I have the client
clientPipe = new NamedPipeClientStream(".", PhotoServiceClassLibrary.Constants.PIPE_NAME, PipeDirection.InOut,PipeOptions.Asynchronous);
clientPipe.Connect();
clientPipe.ReadMode = PipeTransmissionMode.Message;
pipeThread=new Thread(new ThreadStart(pipeWork));
pipeThread.Start();
where pipeWork is
private void pipeWork()
{
try
{
while (true)
{
using (StreamReader sr = new StreamReader(clientPipe))
{
string message;
while ((message = sr.ReadLine()) != null)
{
…
}
}
}
}
catch (Exception ex)
{
}
}
I want when the service begin an action to disable a ContextMenuStrip from the windows forms, for that the service writes a message into a StreamWriter sw:
StreamWriter write = null;
write = new StreamWriter(serverPipe);
if (serverPipe.IsConnected)
{
write.Write(message);
write.Flush();
}
The code is correct because I created for testing another windows forms which implements the same things like the windows service and the communication between
windows forms pipe server -> windows forms pipe client is working well.
The problem is that the windows form - client pipe doesn't receive the message from windows service - server pipe.
I know that WCF can be a better idea but i want to understand why is not working at low-level IPC. Why? I've seen an very strange behavior. My service interact 2 times with the windows forms:
1.My service is designed for downloading some photos. When he begin download he sends a message to the windows forms to announcing him that.
2.When i stop the service he sends a message to windows forms and he stops also.
i've just discovered that both messages arrive at windows agent only after the service is stoped. Can someone explain why?
I hope this isn't your real code. It's good that you've got try/catch blocks around the code of your ThreadStart handlers (otherwise an exception would just quietly delete the thread). However, if you're not logging the exception in the catch block, then it's really just as bad.
You've got a mystery (server doesn't receive message), and you're hiding information (an exception has occurred). If you weren't hiding information, you might have the answer for your mystery (server doesn't receive message because an exception has occurred).
I'm trying to implement the same thing.
I noticed you're passing the PipeTransmissionMode.Message enumeration in the NamedPipeServerStream (serverPipe) constructor. That means the stream will contain strings.
But in pipeWork, you're reading them in as an array of bytes.
Look in the example in this article on MSDN:
http://msdn.microsoft.com/en-us/library/system.io.pipes.namedpipeclientstream.aspx
I want to comunicate with Console XML RPC server from my silvelight application. Is it possibile?
Steps:
1. Start the Console XML RPC server
Code for Console XML RPC server is this:
using System;
using System.Collections;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using CookComputing.XmlRpc;
public class StateNameServer : MarshalByRefObject, IStateName
{
public string GetStateName(int stateNumber)
{
return "whatever";
}
}
class _
{
static void Main(string[] args)
{
IDictionary props = new Hashtable();
props["name"] = "MyHttpChannel";
props["port"] = 5678;
HttpChannel channel = new HttpChannel(props,null,new XmlRpcServerFormatterSinkProvider());
ChannelServices.RegisterChannel(channel,false);
RemotingConfiguration.RegisterWellKnownServiceType(
typeof(StateNameServer),"statename.rem",WellKnownObjectMode.Singleton);
Console.WriteLine("Press <ENTER> to shutdown");
Console.ReadLine();
}
}
Run Silverlight application
I used the code from http://code.google.com/p/xmlrpc-silverlight/
I created new Silverlight application to which I have attached the code from that link. When I start web site (in localhost with port 1139) which executes my SL app happens SecurityException.
void ResponseResponse(IAsyncResult result)
{
XmlRpcHelperRequestState state = result.AsyncState as XmlRpcHelperRequestState;
try
{
state.Response = (HttpWebResponse)state.Request.EndGetResponse(result);
...
}
catch (Exception e)
{
// comes here with SecurityException
}
finally
{
...
}
}
I am using VS2008 Professional,XP Professional, .net 3.5, Silverlight3. I will gladly provide any additional information (or code) which is needed.
I suspect that this is a case of a missing clientaccesspolicy.xml file.
Since your silverlight app will have been launched from another authority it will attempt to access this file the http://localhost:5678/. Since you little test doesn't support that file Silverlight blocks this cross "domain" activity.