I'm building an online radio player using the AS3 code below:
private var soundChannel:SoundChannel;
private var stationUrl:String = "h t t p : / /205.188.215.230:8002/";
sound = new Sound();
sound.addEventListener(Event.ID3, onID3Change);
sound.load(new URLRequest(stationUrl));
soundChannel = sound.play();
private function onID3Change(e:Event):void
{
....
}
the sound plays successfully, but the problem is that the ID3 event is never triggered!
Does anyone know how to solve this?
ID3 doesn't exist in internet radio streams like this one. I am assuming you're talking about a SHOUTcast/IceCast stream.
For that, you need to implement the icy metadata protocol. For Flash, this is generally just done externally.
See this reference: http://www.smackfu.com/stuff/programming/shoutcast.html
Basically, you send icy-metadata: 1 in the headers of your GET request. The server then inserts metadata right into the middle of the stream, which you pull out before sending the data on to whatever is playing the stream. I'm not sure if this is even possible in Flash, but it certainly is possible to do this in PHP (or any server-side language really) and have your Flash application make a request to your PHP script to get that metadata.
Related
I have a website working the same as youtube. At this moment I am trying to create a video image captured by WEBCAM.
The video image should be saved on my computer (by FLV format) first and then if the user is satisfied, he or she can upload it on the server
I am trying to use Actionscript3 in Adobe flash CS5 and Flash media server4
1- How can I do that?
2- Is the flash media server needed?
Please pay attention that we would like to allow the user to save video on his/her computer and then be able to uploaded to the server.
Many thanks.
Assuming the computer can take the overhead of doing the encoding on the fly (or has enough memory to buffer the data then can run the data through an encoding process) then the library mentioned in the SO answer here should work:
Encode video from any format to .flv format in AS3
I believe the Flash media server would only really be necessary in this case for broadcast.
Pseudocode example
private var cam:Camera;
public function Whatever()
{
//In constructor
addEventListener(Event.ENTER_FRAME, grabFrame);
cam = Camera.getCamera();
if (cam != null)
{
var vid:Video = new Video(cam.width, cam.height);
vid.attachCamera(cam);
addChild(vid);
}
}
private function grabFrame(event:Event):void
{
var bd:BitmapData = new BitmapData(cam.width, cam.height)
bd.draw(vid);
//now the BitmapData has a frame of the video, at this point you also
//would want to capture the audio then use the FLV class in the library
}
You can also check out using Red5 as an alternative open source video stream recorder.
http://distriqt.com/post/493
Cheers
I have created a Jar that I want to fill with fireflies, depending on how many users are online.
I did a little digging and I found how to create a XMLSocket. It worked but I didn't know how to get the information how many people are online and also it required a CMD window to run all the time.
The second way I found was trough a PHP,MYSQL witch I have runing with my Apache server, but the tutorials and scripts I found did not work for me, for example. I did not create the required tables.
My question is what is the simplest way to find the current count of users online on your page/flash file? Is there a quick way to do it inside flash and not get involved with MYSQL or PHP?
No, there is not a simple way to only do it in Flash without using any external part (PHP, MySQL, Java, and more...). Remember that Flash is run locally, and thus needs to interact with PHP or similar to interact with the server to tell the server about the activity by the user and to ask the server about other users activities (number of users online).
If you only want to display the users online, I recommend the way that is shown in the example you posted. Simply update the database when activity has been seen by a user and count the user as offline when no activity has been seen for x minutes. There's no need to involve XMLSockets for this unless you want the users to interact with each other in any way.
If you want more than just displaying the users online, I recommend using XMLSockets in ActionScript and looking into PHP Sockets.
i dont think so, the flash player must need a way to "check" on the server the number of users who are online. the simplest would be to send a URLRequest (i hope i got the class name right) to a server script, which could be either a php or an aspx (or any server technology) script / page.
that server script should return the number of users the site has.
e.g.
var numberOfVisitors:Int = 0;
function onLoaded(e:Event):void {
numberOfVisitors = e.target.data;
// now print this 'numberOfVisitors' where you want to on the client
}
var numVisitors:URLLoader = new URLLoader();
numVisitors.addEventListener(Event.COMPLETE, onLoaded);
numVisitors.load(new URLRequest("num_users.php"));
the next part would be a php script (or any other server script) that keeps track of the number of users. that i think you should post as another SO question perhaps?
I got it to work, but I hat to link the php file not trough it's HTTP address, instead just the path relative to the .swf file (just myFile.php or path/myFile.php).
AS3 file:
NewRequest = new URLRequest("numOnline.php");
var numberOfVisitors:int = 10;
var NewRequest:URLRequest;
var UrlLoader:URLLoader;
UrlLoader = new URLLoader();
UrlLoader.dataFormat = URLLoaderDataFormat.TEXT;
UrlLoader.addEventListener(Event.COMPLETE, onLoaded);
UrlLoader.load(NewRequest);
function onLoaded(e:Event):void {
trace(e.target.data);
numberOfVisitors = int(e.target.data);
}
I convert the text As3 receives to int, because i don't know yet how to send veria
php files
main PHP file (the file that as3 connects to):
<?php
include_once 'config.php'; //This file would contain the variables needed to connect to the database with $link, below
include_once 'functions.php'; //We include the functions we have created
$database = "online";
$link = mysql_connect($server, $db_user, $db_pass)or die ("Could not connect to mysql because ".mysql_error());
mysql_select_db($database)or die ("Could not select database because ".mysql_error());
usersOnline(5); //We call the usersOnline function with a time span of 5 minutes
showUsersOnline(1); //Show the number of users online, and the list of users
mysql_close($link);
?>
the function file sends the number of Visiters Online with echo $count;
Yes, you can do it without a database (MYSQL) and PHP; BUT you will still need a (Media) Server.
I wouldn't suggest the following if your "only" purpose is to count the connecting clients, but if you have the reasons and have access to a Flash Media Server, you can try the following:
On Server Side:
Create an application (folder) on FMS, create the main.asc file inside that folder.
Inside the main.asc; create a (remote) SharedObject (server-side) (e.g.: users_so)
Watch for connecting clients on application.onConnect event. Add each connecting client to that SharedObject inside this handler.
Also watch for disconnecting clients on application.onDisconnect event. Remove each disconnecting client from the SharedObject inside this handler.
On Client Side:
Connect each Flash client to FMS (with your new app-folder path in the URI) when the application loads in the browser.
Watch for the NetStatusEvent.NET_STATUS event and "NetConnection.Connect.Success" code. When connected; create a SharedObject (client-side) and get the remote from the server.
Add the SyncEvent.SYNC event listener to the SharedObject. This will sync with each Flash client when a user connects or disconnects from the server.
Inside the sync event handler, get and count the users from the event response.
Display the count on your Flash client.
See Server-Side ActionScript Language Reference for Flash Media Server 4.5, especially the Application Class.
Also useful: Flash Media Server Developer Center
Hope this helps.
We are running a Cumulus server to do a live voice and text chat.
The setting is that each client can post data to each other client in the same NetGroup via group.post(). Unfortunately, that function is extremely slow (half a second delay, at least), so we switched to using NetStream.send to call functions on other clients, passing the data through that. This works almost instantly.
However, we are now trying to build separate chat rooms, using different NetGroups. But when doing so, NetStream.send() doesn't work anymore, the functions are never called on the other clients, and no voice data is transferred. Basically, the whole publishing NetStream seems to be not working any more.
We have the following setup to establish a NetGroup and a publishing stream on each client:
var gspec:GroupSpecifier = new GroupSpecifier("Group1");
gspec.multicastEnabled = true;
gspec.postingEnabled = true;
gspec.serverChannelEnabled = true;
gspec.objectReplicationEnabled = true;
gspec.routingEnabled = true;
_group = new NetGroup(_netConnection, gspec.groupspecWithAuthorizations());
_group.addEventListener(NetStatusEvent.NET_STATUS, handleNetGroupStatus);
_sendStream = new NetStream(_netConnection, gspec.groupspecWithAuthorizations());
_sendStream.addEventListener(NetStatusEvent.NET_STATUS, handleNetStreamStatus);
_sendStream.client = this;
_sendStream.attachAudio(_mic);
_sendStream.publish("media");
And the following code is used to listen to the "media" stream:
case "NetGroup.Neighbor.Connect":
var netStream :NetStream = new NetStream(_netConnection, p_netStatusEvent.info.peerID);
netStream.addEventListener(NetStatusEvent.NET_STATUS, handleNetStreamStatus);
netStream.client = this;
netStream.play("media");
break;
The NetGroup connection itself works, and "NetGroup.Neighbor.Connect" is called on each client when a neighbor connects. But the _sendStream itself simply doesn't work. No data is received, no function called.
It does work when the publishing NetStream is constructed in the following way:
_sendStream = new NetStream(_netConnection, NetStream.DIRECT_CONNECTIONS);
However, we only want the NetStream to send to a single NetGroup, and according to the Adobe Documentation, using gspec.groupspecWithAuthorizations() in the constructor should allow exactly that.
Are we missing something here?
I found the answer:
You also have to make the receiving NetStream listen to gspec.groupspecWithAuthorizations() instead of p_netStatusEvent.info.peerID.
This does work. Unfortunately, this makes voice chat impossible, as it is incredibly slow (as slow as NetGroup.post()) and introduces many sound artifacts.
So, we'll have to find another solution for different chat rooms...
I have an AS3 application that loads various SWFs at runtime. The loading animation that is being used has a fairly long in and out animation that I don't want to show if the target SWF is in the browser cache.
So at the moment each SWF is loaded in as required using Greensock's SWFLoader in a basic manner:
var context:LoaderContext = new LoaderContext();
context.applicationDomain = ApplicationDomain.currentDomain;
loader = new SWFLoader("mySWF.swf", {name:"sectionLoader",context:context,auditSize:true,onOpen:onLoadInit,onProgress:onLoadProgress, onComplete:onCompleteLoadHandler, onError:onLoadErrorHandler});
loader.load();
My goal is to do something before calling loader.load(); to determine if the load operation will require the request to go beyond the browser cache, but before I get into R&Ding something I thought I'd ask if anyone has already done something similar.
A few more thoughts I've had so far:
Just keeping track of what has been loaded in AS3 isn't good enough because if the user clears their cache they might be left loading a large SWF on a slow connection with no indicator.
Might a combination of LoaderItem.httpStatus and LoaderItem.auditSize() be worth investigating?
Is there a better loading framework for AS3 that I should be looking into instead of the Greensock classes?
Ideally I would prefer to also have some kind of version detection to span sessions that could be months apart, but one step at a time.
when you are doing any HTTP request, the responce comes up with HTTPStatus property. In AS3 you just need to chek if
HttpStatusEvent.status == 304
And for httpStatus in greensock library.
Basically 304 code means that no chages has been made on server side to the resource which user has requested. Which eventually leads to conclution that the resource is in the cache.
UPDATE
If this will not fit your needs try storing some variable for should you play the animation or not in Cookies or in Session variables.
I'm very new to the Action Scripting, I'm using the FLVPlayback class to play my FLV files.
If I'm trying to play a FLV file which is not existed yet then I am getting a "VideoError: 1000" with message of Unable to make connection to server or to find FLV on server.
I want to check for the FLV file existence using the file URL or path, before playing that FLV by FLVPlayback. Can anybody please suggest a way to do that.
Thanks
The only way to catch the error safely is to listen for the fl.video.VideoEvent.STATE_CHANGE event and act accordingly. Here's a little code snippet on how to do so:
import fl.video.FLVPlayback;
import fl.video.VideoEvent;
import fl.video.VideoState;
var videoPlayer:FLVPlayback;
videoPlayer.addEventListener( VideoEvent.STATE_CHANGE, onVideoStateChange );
/** Bad source **/
videoPlayer.source = "http://www.helpexamples.com/flash/video/caption_video_error.flv";
/** Good source **/
//videoPlayer.source = "http://www.helpexamples.com/flash/video/caption_video.flv";
function onVideoStateChange( evt:VideoEvent ):void
{
var videoPlayer:FLVPlayback = evt.target as FLVPlayback;
switch( evt.state )
{
case VideoState.CONNECTION_ERROR:
trace( 'Connection error' );
/**
* Once you hit this event, you should run some logic to do one or more of the following:
* 1. Show an error message to the user
* 2. Try to load another video
* 3. Hide the FLVPlayback component
*/
break;
default:
trace( 'Player is: ' + evt.state );
}
}
For a full list of possible VideoState constants, visit fl.video.VideoState.
I think you may be able to make use of the stateChange event. One of the possible event types is VideoState.CONNECTION_ERROR and another is VideoState.DISCONNECTED which may also work.
Try giving that a shot.
If those don't work, the only way I can think of would be to either do a HEAD or GET request for the flv before you attempt to load it. Only a successful response would trigger the video loading through the normal method. I don't remember whether Flash supports HEAD requests, but if it does that would certainly be the better option.
If Flash does not support HEAD requests then you may be better off having a simple, server-side script that could verify the existence of the flv before you actually request if. That way you can use a simple GET request without having to retrieve the whole file.
INLINE THINKING
I am just thinking, another possible solution using GET would be to cancel the load as soon as bytesLoaded > 1K (for example), or something like that. As long as you are checking for a size greater than the 404 response you are getting, you should be able to assume the flv is being loaded.