Live streaming audio/video

I'm looking for advice on how to stream live video, full
screen at high quality 640x480 30 fps. I need to be able to carry
on a teleconference between two instances of the program, but also
support 640x480 at 30 fps. What programs might be needed (encoder?,
server?)

Hi tony45371,
The replies from in2mobile are 100% correct.
For live video, some server is required. Flash Media Server
is the required server offered by Adobe (there are competitors
including open source competitors to Flash Media Server). Also an
alternative to putting up your own Flash Media Server, may CDNs
offer Flash Media Server services. You can find a list of CDN
partners here:
http://www.adobe.com/products/flashmediaserver/fmsp/
Are your live events webcasts (e.g. 1 presenter, w/ many
attendees)? Or 2-way (e.g. multiple presenters)?
I assume that you require 2-way since your post said "I need
to be able to carry on a teleconference between two instances of
the program".
Following below are links into the browsable version of the
product documentation (adobe.com/livedocs). Easier to read PDF
versions can be downloaded here:
Flash Media Server Developer Guide
http://livedocs.adobe.com/flashmediaserver/3.0/hpdocs/flashmediaserver_dev_guide.pdf
All Flash Media Server Documentation
http://www.adobe.com/support/documentation/en/flashmediaserver/
2-WAY VIDEO CONFERENCE
For 2-way you can find a related sample application (with
explanation and downloadable source code) here:
Video Conference with Flex & FMS
http://renaun.com/blog/2006/11/08/147/
Video Conference with Flex & FMS, Live Demo and Source
Code
http://renaun.com/blog/2006/10/28/139/
You can also find additional code examples in the Flash Media
Server product documentation here:
http://www.adobe.com/livedocs/flashmediaserver/3.0/hpdocs/00000082.html
(Above link, in the PDF version, is in Chapter 4: Developing
live video applications)
1-WAY WEBCASTS
For live webcast events, Flash Media Server includes a free
companion program "Flash Media Live Encoder 2.5" (aka FMLE). FMLE
offers higher quality video (H.264 & VP6), and audio (MP3 and
with a 3rd party plug-in AAC). Details on FMLE here:
http://www.adobe.com/products/flashmediaserver/flashmediaencoder/
Following is a link into the product documentation on using
FMLE 2.5 w/ FMS3:
Using the live service
http://www.adobe.com/livedocs/flashmediaserver/3.0/hpdocs/00000031.html
(Above link, in the PDF version, is in Chapter 2: Streaming
services)
You can also find an article written against the older Flash
Media Server 2 with an earlier version of FMLE here:
http://www.adobe.com/devnet/flashmediaserver/articles/webcasting_fme.html
Please post back regarding whether the above answers your
question, and if you find it helpful :-)
Best regards,
g

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How to stream audio / video in java?

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I would live to develop a java application (JavaEE, with tomcat or JBoss) that could stream audio / video over the Internet, on a controlled matter.
First, I would have to embed a flash player, correct? Need suggestions on one, paied or free.
My questions are: How can I have the flash player stream audio to users by downloading it from a java app server, if the user has a session and is logged in, etc? (picture myspace here)
Also, how do I measure network traffic in Java? (The flash player of each user will stream the songs, I'd like to know how much bandwith is going around).
The reason that I'm asking this here is because I have no idea of which forum to ask this.
I have been a Java app developper for the past five years, so coding won't be a problem, I just don't know which API / Frameworks to turn to.
Thanks for all your help.
Regard,
Carlos.

ragedd wrote:
First, I would have to embed a flash player, correct?No. You're just taking ideas from other popular streaming sites. It's certainly not a requirement.
My questions are: How can I have the flash player stream audio to users by downloading it from a java app server, if the user has a session and is logged in, etc? (picture myspace here)The same way you would authenticate any website. Usually a database and a challenge/response. If they're not logged in, then instead of writing out the content, write out a 403 status code (or do something more graceful, such as redirect them to the login page).
Also, how do I measure network traffic in Java? (The flash player of each user will stream the songs, I'd like to know how much bandwith is going around).Just keep track of how much data you send to the OutputStream.

How to open live streaming audio? Like live streaming audio

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i can't play some asf files
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also how can I use Window media player to open some live streaming audio or video instead of quicktime ?

Install Flip4Mac to enable QuickTime to handle Windows Media files.

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I am planning on doing a project on streaming audio/video onto Real Audio Player . I am very new to JMF . I would appreciate some pointers on how to start off. I ahve read the documents but am not able to get started right .
I wanted to know the following :
1. Isnt the RTP streaming streaming for live audio or video ? If I want to stream something which I have stored in my local machine then how do i do it - do i need to use RTP ?
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JMF doesn't have any support for Real media. Real has gone open source with their Helix Community, so maybe you could find some useful information there: http://www.helixcommunity.org

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Hi, please help,
I have problem in this area also,
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Message was edited by:
nbkamani

Live Streaming from Video File

Hi everyone,,, im newbie in programming streaming video with flash....ater reading documentations i tried the instructions on doc, i got a question that i've not been solved. How to make a "live streaming" from "video file". It likes a live streaming from camera but it uses video file as the source.... many thanks

Do you mean you have video file but you want to publish it as live stream , am i right? If yes following is the solution, but before that let me clarify you will need server to do it , i mean there is no way Flash client (i.e. .swf file running in Flash Player) can publish file from local disk.
Now let me tell you how to do it from server:
Place your video file under "streams" folder of your application i.e. say "myVideo.flv" under <FMS root>/applications/myApp/streams/_definst_
Now write following code in your main.asc file (this file would be under <FMS root>/applications/myApp )
var mystream;
application.onAppStart = function(){
mystream = Stream.get("livestream");
mystream.play("myVideo",0,-1,true);
This will publish "myVideo" file as live stream under name of "livestream". Client would have to subscriber using NetStream and
use ns.play("livestream",-1,-1)
You might have to write some extra code if you want to loop same file else once play of recorded file gets over , live publish will automatically stop.
let me know if this solves your problem

Live streaming audio on flash site

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I am new to Flash and I am working on a web page using flash, the page itself is going to be pretty basic, but the situation I am in is this, we would like to but a live streaming audio feed on the site and I am having trouble figuring out how to add that. The server it is from is a Broadwave server, and it does stream in MP3. I would like the audio stream to start automatically when the web page is open. Any help would be greatly appriciated.

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http://www.longtailvideo.com/players/jw-flv-player/
or
http://flowplayer.org/
or
http://ffmp3.sourceforge.net/
each player will have it's own config setup for autoplay etc.
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Adninjastrator

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IOS RTMP live stream audio

Hi guys hopefully some of you will be able to help me.
I am trying to stream audio from a live RTMP feed using the NetConnection and NetStream classes. I've managed to get my app running no problem on Android, however I am having some major difficulties getting it to play the audio back on iPad. Interestingly it works in the device emulators when debugging, however I'm assuming this is not really an accurate representation. I've tried streaming the RTMP in both AAC and MP3, but with no luck from either. I can verify through debug that it has connected to the stream, however I just get no audio playing.
Everything I've read about seems to suggest that this is possible on IOS as I'm only interested in audio and not video. Can anyone help?
Code sample below (it's quick and dirty! ).
THanks in advance!
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
                    xmlns:s="library://ns.adobe.com/flex/spark" title="Audio" creationComplete="init()">
          <s:layout>
                    <s:VerticalLayout paddingLeft="10" paddingRight="10"
                                                              paddingTop="10" paddingBottom="10"/>
          </s:layout>
          <fx:Script>
                    <![CDATA[
                              import flash.media.Video;
                              import flash.net.NetConnection;
                              import flash.net.NetStream;
                              import mx.core.UIComponent;
                              private var vid:Video;
                              private var videoHolder:UIComponent;
                              private var nc:NetConnection;
                              private var defaultURL:String="[STREAM]";
                              private var streamName:String="[STREAMNAME]";
                              private var ns:NetStream;
                              private var msg:Boolean;
                              private var intervalMonitorBufferLengthEverySecond:uint;
                              private function init():void
                                        vid=new Video();
                                        vid.width=864;
                                        vid.height=576;
                                        vid.smoothing = true;
                                        //Attach the video to the stage
                                        videoHolder = new UIComponent();
                                        videoHolder.addChild(vid);
                                        addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSecurityError);
                                        grpVideo.addElement(videoHolder);
                                        connect();
                              public function onSecurityError(e:SecurityError):void
                                        trace("Security error: ");
                              public function connect():void
                                        nc = new NetConnection();
                                        nc.client = this;
                                        nc.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
                                        nc.objectEncoding = flash.net.ObjectEncoding.AMF0;
                                        nc.connect(defaultURL);
                              public function netStatusHandler(e:NetStatusEvent):void
                                        switch (e.info.code) {
                                                  case "NetConnection.Connect.Success":
                                                            trace("audio - Connected successfully");
                                                            createNS();
                                                            break;
                                                  case "NetConnection.Connect.Closed":
                                                            trace("audio - Connection closed");
                                                            //connect();
                                                            break;
                                                  case "NetConnection.Connect.Failed":
                                                            trace("audio - Connection failed");
                                                            break;
                                                  case "NetConnection.Connect.Rejected":
                                                            trace("audio - Connection rejected");
                                                            break;
                                                  case "NetConnection.Connect.AppShutdown":
                                                            trace("audio - App shutdown");
                                                            break;
                                                  case "NetConnection.Connect.InvalidApp":
                                                            trace("audio - Connection invalid app");
                                                            break;
                                                  default:
                                                            trace("audio - " + e.info.code + "-" + e.info.description);
                                                            break;
                              public function createNS():void
                                        trace("Creating NetStream");
                                        ns=new NetStream(nc);
                                        //nc.call("FCSubscribe", null, "live_production"); // Only use this if your CDN requires it
                                        ns.addEventListener(NetStatusEvent.NET_STATUS, netStreamStatusHandler);
                                        vid.attachNetStream(ns);
                                        //Handle onMetaData and onCuePoint event callbacks: solution at http://tinyurl.com/mkadas
                                        //See another solution at http://www.adobe.com/devnet/flash/quickstart/metadata_cue_points/
                                        var infoClient:Object = new Object();
                                        infoClient.onMetaData = function oMD():void {};
                                        infoClient.onCuePoint = function oCP():void {};
                                        ns.client = infoClient;
                                        ns.bufferTime = 0;
                                        ns.play(streamName);
                                        ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
                                        function asyncErrorHandler(event:AsyncErrorEvent):void {
                                                  trace(event.text);
                                        intervalMonitorBufferLengthEverySecond = setInterval(monPlayback, 1000);
                              public function netStreamStatusHandler(e:NetStatusEvent):void
                                        switch (e.info.code) {
                                                  case "NetStream.Buffer.Empty":
                                                            trace("audio - Buffer empty: ");
                                                            break;
                                                  case "NetStream.Buffer.Full":
                                                            trace("audio - Buffer full:");
                                                            break;
                                                  case "NetStream.Play.Start":
                                                            trace("audio - Play start:");
                                                            break;
                                                  default:
                                                            trace("audio - " + e.info.code + "-" + e.info.description);
                                                            break;
                              public function monPlayback():void {
                                        // Print current buffer length
                                        trace("audio - Buffer length: " + ns.bufferLength);
                                        trace("audio - FPS: " + ns.currentFPS);
                                        trace("audio - Live delay: " + ns.liveDelay);
                              public function onBWDone():void {
                                        //Do nothing
                              public function onFCSubscribe(info:Object):void {
                                        // Do nothing. Prevents error if connecting to CDN.
                              public function onFCUnsubscribe(info:Object):void {
                                        // Do nothing. Prevents error if connecting to CDN.
                    ]]>
          </fx:Script>
          <s:Group id="grpVideo">
          </s:Group>
</s:View>

Just an update on this for anyone coming along after me.
I've managed to get this working on MP3 but not AAC (I guess AAC just isn't supported?).
My problem was the buffertime. The docs seemed to indicate it shoudl be set to 0 for live streaming, however switching it to "1" solved my problem on the particular stream I was pointing at.
So essentially justchanged the above line:
                                        ns.bufferTime = 0;
to
                                        ns.bufferTime = 1;
Would be great to find out if anyone has gotten AAC working however...

Use FMS & Actionscript to Stream Audio/Video and control (powerpoint) slides

Hi there,
My compnay provides webcasting services to numerous clients, and we currently use Windows Media Encoder as our base software for these projects.
However, I'm interested in switching to Flash Media Server, but need to figure out one issue and how to implement it in such a way like how we are currently using Windows Media Encoder.
We need a way to stream out a live audio/video feed AND have a way to control a presenter's POWERPOINT slides and have them advance by our command when streaming live.
Basically, the way we do it is we will stream out audio/video from WME and also use the encoder's SCRIPTING functions to send out a "url" from the encoder to the actual page in which the viewer is watching the live embedded stream. On that page is an embeded/internal frame which we can specify (using the id/name) that the url gets loaded, and this actually advances the slides (or more so pulls up a pre-created html page of the next slide in the person's powerpoint, which is actually a screenshot or exported image of that slide and embedded within a specific HTML file and hosted on the same server as the embedded player/html file)
Would there be a way to send out this same type of script using FMS? I've been playing around with it and notice the interface itself does not have a built in scripting function like Windows Media Encoder does. However, I did read somewhere that it supports ActionScript... but I have no clue how to implement this feature.
I am just curious how it might be able to go about doing this? Is there a way to use an [action]script with FMS and have it send out a URL to a specific frameset embedded on the same page as the Flash Media Encoder Playback?
Hopefully this make sense and that someone can point me in the right direction. Switching to FMS over Windows Media Encoder is the way I would love to go, just need to figure out how this could be done.
Would a better method be converting the powerpoint slides to a swf or flv file, embedding that file within the same page as the FMS playback, and somehow using a script to "advance" the frames/slides/scenes within that file?
I also heard something about Flash "Shared Objects" and how this could be a way of controlling a swf file remotely.....
Could anyone give me some advice and know a method that I could use to achieve this type of implementation?
Any help is GREATLY appreciated! Thanks!

FMS (the interactive version, FMIS) has complete scripting support.
What you want to do can be done with FMS, and there are a lot of ways you can approach it. Converting to .swf can be helpful, as it means you have a single resource to load rather than a bunch of individual slide images (the flashplayer can load .swf, jpg, gif, png). Rather than embedding, I'd opt to make it an external resource and load it at runtime... that would keep the player application reusable.
To get an idea of how to use server side actionscript, see the getting started portion of the FMS 3.5 dev docs
http://help.adobe.com/en_US/FlashMediaServer/3.5_Deving/
Then, see the SSAS docs for the following classes in particular:
The Client class for Client.call()
The Stream class for Stream.send()
The Shared object class
The Application class for BroadcastMsg()
The docs give some general overview for the usage of each. The best choice really depends on your deployment architecture and scalability requirements.

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any suggestions?
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This is suposed to happen if the streams received have the same CName. I guess if you are able to send two different streams with 2 different CNames they won't synchronize. But I still don't know how to do that... :)
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From a Microsoft Bulletin:
Cannot play back file. The file format is invalid.
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This issue may occur if the .asx file contains an error, or if there is an error in the HTML coding of a Web page that contains an embedded Windows Media file.
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