P2P-based live streaming media data

In a P2P-based live streaming system , what should we do before transmitting media data to overlay net?What kind of transmitting protocol should be take?Is there a possibility to get the content from a
datasource which be transmitted by RTP?

Chicago has a terrible new tax that went into effect on Wednesday...an additional 9% tax to streaming services (ie: Netflix) and to access data from a provider's computer (ie: research databases)http://www.chicagotribune.com/bluesky/originals/ct-chicago-cloud-tax-bsi-20150701-story.htmlfta: “watching electronically delivered television shows, movies or videos,” “listening to electronically delivered music” and “participating in games, on-line or otherwise.”...since the taxes will be levied based on Chicago billing addresses, there’s nothing to stop individuals from moving outside city limits or listing billing addresses in other towns. The same is true for businesses... anything that requires a user to do a search or make a request is subject to the taxEDIT: added link.
This topic first appeared in the Spiceworks Community

Similar Messages

P2P-based live streaming protocol

In a P2P-based live streaming system , a video stream is diveded into segments of uniform length. Each segment contrains 1-second video data.Every peer in the overlay owns a buffer to save segments temporarily.Then, what kind of protocol is appropriate to transmite 1-secong vido data?UDP or RTP?
If RTP was used ,what kind of process should be take to get the video data which be send to buffer but not to play at once?

So you know, there are no Macromedia guys... there are only
Adobe guys, and I wouldn't expect answers from any of them here.
This is a user to user forum.
I don't work with mobile devices much, but Flash Lite
supports the Flash 7 standard , so I would imagine the
netconnection and video classes are in there. If that's the case,
then you should be able to deliver Sorenson Spark encoded flv files
(the flash 6/7 standard).
Try here:
http://www.adobe.com/mobile/

Display live stream media in older players using MediaPlayback component

Hello,
Is it possible to preview stream encoded by Flash Media
Encoder 2 and fed to Flash Media Server 3 in MediaPlayback
component of older flash players?
Thank you.

About Flash P2P live streaming from non-webcam sources

Hello, I am a university student. Our lab is attempting to work on a p2p live streaming using flash p2p features. The media source is not from a webcam but a file from a certain server, which is not directly supported by any of the 4 methods flash player offers(posting, direct routing , object replication,and multicast.) As some of the forum threads mentioned, our method is to use NetStream.publish() a stream and use send("callbackname", data) to all subscribers that have joined in a NetGroup. So we can use p2p transmission. Now here are our questions:
1. We know from MAX 2009 that flash p2p camera video multicasting implements pull-push mechanism inside which makes full use of p2p features like buffer map exchange. If we use NetStream.send() API to send non-webcam source data, will it also make use of this pull-push mechanism to spread data among all peers(subscribers) with proper data exchange?
or more detailedly,
I saw the P2P Gaming Libs at flashrealtime.com. It uses DIRECT_CONNECTIONS when creating publish-used NetStream in order to send data with lowest latency. My question is if I do not use DIRECT_CONNECTIONS, than when the NetGroup grow large (1000), will those peers that are not direct neighbors to the publisher in the same group relay data to each other using pull-push via buffer map?
2. I have written a sample app and use send() to deliver data only (NetStream.bufferTime = 0) without camera video and audio. When the publisher sends the data in a "for()" stantence for 20 times, the subscribers can only receive about 8 of them. But when I set a timer and periodically send them(e.g., 500ms), the subscribers can receive them correctly. My questions are: Is the packet loss caused by UDP unreliability? Can this be solved by setting the NetStream.dataReliable = ture? Can this totally be solved by setting a timer? How to set the delaytime property in timer? Are all data sent are orderedly received?
I'm very appreciated if you can answer my questions? thanks.

1. NetStream.send() data is delivered in the order it was sent, whether in client-server, DIRECT_CONNECTIONS, or multicast mode.
2. the lowest latency will be achieved with DIRECT_CONNECTIONS. however, that isn't scalable to large numbers of recipients. the P2P multicast system trades low latency for scalability.
3. there are no plans to support a natural NetStream streaming source that's not a camera/microphone. Flash Media Server can perform that function.
4. you should never need to implement "bitmap exchange"; the object replication system handles all the communication needed to accomplish its function. typically you will divide a file into segments, giving each one an index number. object replication uses ranges internally, so the index numbers should be contiguous. nodes that have indices use NetGroup.addHaveObjects(). nodes that want indices they don't have use NetGroup.addWantObjects(). nodes that have objects will send them to nodes that want the objects. when a node receives an object, it's automatically removed from its "want" set; once the node decides the object is acceptable, it adds it to its "have" set, at which point it can answer requests from other nodes who still "want" it. eventually every node will have all the pieces and not want any. for an example, please see Tom Krcha's articles on using object replication:
http://www.flashrealtime.com/file-share-object-replication-flash-p2p/
http://www.flashrealtime.com/video-on-demand-over-p2p-in-flash-player-101-with-object-repl ication/
5. please see Tom Krcha's articles. for VOD you will probably want to use the "LOWEST_FIRST" replication strategy, as that may allow you to start playing earlier. for general file replication you'll get better sharing if you use RAREST_FIRST.

AS3 - 1) Countdown Timer to the designated Date for Live-Broadcast-Event yet to take place; 2) Detect End of Live Stream on FLVPlayback with FLVPlayback.isLive = true - ActionScript 3 - flash cs3 cs4

Hi folks,
Ronny's here again on forums, having particularly 2 (two) questions/problems to resolve:
1) Countdown Timer to the designated Date for Live-Broadcast-Event yet to take place
2) Detect End of Live Stream on FLVPlayback with FLVPlayback.isLive = true
attached is the .zip file (as3_Countdown Timer_ver 1.0.1_by Ronny Depp.zip) with all flash source files containing:
a) The FLash Source (file: timer_module.fla) - (FLA flash source file - Flash CS3 Professional, Flash Player 9, actionscript 3.0)
b) com.othenticmedia.utils.dateAndTimeManagement package including 2 .as actionscript 3.0 Class files.
       i) com.othenticmedia.utils.dateAndTimeManagement.DateAndTimeManager Class in the said package. (file: DateAndTimeManager.as)
       ii) com.othenticmedia.utils.dateAndTimeManagement.CountdownTimer Class in the package. (file: CountdownTimer.as)
c) The compiled SWF file version of this Application's blueprint. (file: timer_module.swf).
What i need to confirm is: ........................................................ see the next post of mine. (for Problems need to be Resolved)

Problems to Resolve:
Problem#1) - Countdown Timer to the designated Date for Live-Broadcast-Event yet to take place.
Problem#2) - Detect End of Live Stream on FLVPlayback with FLVPlayback.isLive = true;
Problem#1 Description:
I need to pinpoint the Logical TimeSync Exception, i am still unable to figure out. That is I'm using a webservice in my Application to Synchronize the Time with the actual ET (eastern time) with accomodation of auto-adjustment for EDT GMT-4 (eastern daylight time) & EST GMT-5 (eastern standard time), times. I am using the zipcode: "10012" to pass it to the Web Service in urlRequest object, to retrieve the Current ET eastern time according to EDT & EST time settings for Manhattan/Brooklyn areas or others within New York, NY 10012.
Currently the Web Service is returning accurate date/time based on local EDT GMT-4 daylight time.
Is there some defined set of dates for EDT & EST times for New York region that I can check for to ensure the correct Dates/Times for Eastern Time in New York area ??? I am using NY zipcodes because i am sure to get correct ET values.
The Major Problem Part: is I need to correct the time by 2 seconds or approx. 2 secs, some millisecs.
When I retrieve the Time Value from WebService, it lags behind for 2 seconds as compared to DateObj i create using computer's local time, on my Windows XP Service Pack 2 with Automatic Updates turned-on. And I'm sure about my Windows will be having latest updates for Time Management already installed. I also added the 2 secs. to the TimeSync(ed) Date to make correction to this Date obj.
I call my custom fucntion addSeconds(dateObj:Date, secs:int) to add 2 seconds to the Date by Converting Seconds to Milliseconds.
Please comb through the as code in files attached and Help Me Out !!!
Problem#2 Description:
Secondly I need to Detect the End of Stream state while using FLVPlayback component, an rtmp:// live Stream from FLASH MEDIA SERVER.
I need to Play a YuMe Post-Roll Ad when Steam Finishes/Ends.
Live Broadcast Stream Event starts every night on Wednesdays & Saturdays exactly at 10:59 PM EDT GMT-4.
Live Events only Streams/Broadcasts the stream for 50secs. exactly. When [playback stopped] it plays a PostRoll Ad and after the CountdownTimer again comes back to life. The Next upcoming Event is calculated & the Countdown begins until Next Event's time/date is reached.
Here is the code on the frame 1 on the MainTimeline: (rest of the params like source, volume, skinAutoHide are Set using Property Inspector for FLVPlayback instance on Stage)
//myStream instance of FLVPlayback is on the Stage
myStream.isLive = true;// Frame 1 Actions in the FLA
myStream.addEventListener(VideoEvent.COMPLETE, onEndOfStream);
myStream.addEventListener(VideoEvent.STATE_CHANGE, onState);
myStream.addEventListener(String(VideoError.NO_CONNECTION), onStreamError);
myStream.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
/*if(myStream.stopped){
     trace("tracy: "+myStream.state);
} else if(myStream.state == VideoState.STOPPED){
     trace("tracy: "+myStream.state);
function onStreamError(event:VideoError) {
     trace(event.code + "\n\t" + event);
function onState(event:VideoEvent) {
     trace(event.state + "\n\t" + event.toString());
function onEndOfStream(event:VideoEvent) {
     trace(event.state + "\n\t" + event.toString());
function netStatusHandler(event:NetStatusEvent):void {
     switch (event.info.code) {
          case "NetConnection.Connect.Success":
               //connectStream();
               break;
          case "NetStream.Play.StreamNotFound":
               trace("Stream not found: "/* + myStream.source*/);
               break;

How to use Phone camera for live streaming rather than using WireCast camera in Live streaming using Azure Media Services

Hi,
am planning to develop a live streaming app using C# and xaml.
I have gone through the below sample and am able to stream the live content using wireacst camera.
Azure Media Services Live Streaming Sample
But i want to use Phone camera to stream the live video rather using wirecast camera.
How can i use that? How to get the published URL from the C# code, is there any API to get that?
Anybody please help me
Regards,
Santhosh

Hello,
There are no in box components that will allow you to transmit captured video from a Windows Phone device to Azure Media Services. You will need to create you own implementation. You can do this by creating a custom Media Foundation sync that can plug into
the MediaCapture element's pipeline. You will then need to modify the captured and compressed video to align to one of the two protocols that Azure Media services can use. At this time Azure Media services can use either Smooth Streaming or RTMP for ingestion.
You will need to create your own packager (or find compatible packager code from a 3rd party) to package the MP4 encoded data into the necessary format.
Here is an example of how to create a custom Media Foundation sync (please note you must write your Media Foundation components using C++ MoCOM. We do not support Media Foundation components written in managed languages):
Real-time communication sample
I hope this helps,
James
Windows SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/

Using http live streaming to stream data from a Webcam

JavaFX 2.2 includes support for http live streaming: http://en.wikipedia.org/wiki/HTTP_Live_Streaming
How could one create a http live stream from a Webcam and thereby enable a JavaFX application to view and hear the Webcam video in realtime?

Bom Dia Saille,
Eu acredito que o que você tenha hoje seja isso aqui (Desenho bem simplificado):
Hoje o que você tem é o Aplicativo do Medidor + USB Driver controlando o seu medidor. Basicamente, sua aplciação está dividida em três camadas:
Aplicação - Onde estão as funcionalidades principais do programa (interface com o usuário, apresentação de dados, geração de arquivos, etc.)
VISA - Uma arquitetura de Software para controle de instrumentos. Basicamente, ele se comunica com o Driver USB para poder enviar e receber pacotes de dados através do barramento USB.
Device Driver - Intruções de SW de baixo nível para controlar um periférico através de um barramento.
No desenho, eu aponto duas camadas onde você pode tentar atuar para automatizar suas medições:
Aplicação - Você pode usar o VI Server para controlar o Aplicativo do Medidor (Se este aplicativo tiver sido desenvolvido em LabVIEW, o que eu suponho ser verdade). No entanto é necessário saber se o desenvolvedor do produto permitiu isso (Veja Using VI Server to Pass Data Between a VI and a LabVIEW Executable). Outra alternativa é conversar com o fabricante para ver se ele desenvolveu alguma API (Application Programming Interface) para que você consiga controlar o instrumento diretamente.
VISA - O LabVIEW Fornece uma API chamada NI-VISA para poder enviar e receber informações através de diversos barramentos (Veja Serial Instrument Control Tutorial)
É possível acessar o Driver diretamente também, mas eu não recomendo. O resultado não compensa o esfroço!
Espero ter esclarecido suas dúvidas e espero que você tenha sucesso na sua aplicação!!
Atenciosamente.
Felipe Flores
Engenharia de Aplicações
National Instruments Brasil

Flash Media Player which handles bitrate switching for live streams?

Hello. I've got a very short timescale to find a solution for a way to display livestreams with bitrate switching. Does anyone
know of any opensource players which can do this effectively? Or do the inbuilt components in CS4 deal with this ok?

Thanks,I have read that article. Based on that article the NetStreamInfo.maxBytesPerSecond is not an accurate measurement to base dynamic switching on. This seems to be the basis of the bitrate switching in both the longtail player, and the adobe examples that I have tried. That article suggests using the dropped frames property, in conjunciton with bufferlength to determine if switching is neccessary. Unfortunately I can't seem to find a player online which handles this successfully. That being said, I can't believe I'm the only person trying to implement dynamic bitrate switching for live streams so surely there are some players out there which can do this successfully? If anyone knows of any code available which does this successfully I would appreciate knowing where! The examples provided by Adobe https://www.adobe.com/cfusion/entitlement/index.cfm?e=fms35 unfortunately don't work either.

How to secure Flash Media Streaming Server 3.5 (live stream connection)

I have Flash Media Streaming Server 3.5 (not Interactive) running on RHEL5.5 x86_64 Linux.
All is working well, however how do I prevent unauthorized access to connecting to the live stream and streaming content?
How can I setup the server to require a user and password to stream live media to the server?
Any help would be great, I am new to this product and I have been reading some documentation but I have not found a clear cut answer on how to force a username and password to connect to the server to stream live content only.
I am using the Adobe FMS Apache install, what files need changing?
I have the following files:
/opt/adobe/fms/applications/live
total 44
-rwxr-xr-x 1 fms fms 1035 Jul 27 14:52 allowedHTMLdomains.txt
-rwxr-xr-x 1 fms fms 992 Jul 27 14:52 allowedSWFdomains.txt
-rwxr-xr-x 1 fms fms 1550 Jul 27 14:52 Application.xml
-rwxr-xr-x 1 fms fms 4371 Jul 27 14:52 main.far
-rwxr-xr-x 1 fms fms 2292 Jul 27 14:52 readme.txt
I want to lock down a person from connecting to the server on the public internet and starting a live stream?
Can this be done with a user name and password?

If you are concerned about anyone starting publishing to your stream then we have security update on this. Please upgrade to 3.5.4 and now you can use FMS Authentication Add-in (used with FMLE as publisher). If you are facing problems with publisher which are not FMLE, please enable SWF Verification so that only valid SWF's connect to your FMS.
You can find 3.5.4 update here : http://www.adobe.com/support/flashmediaserver/downloads_updaters.html
You can find FMS Authentication Add-in on FMLE Download page: https://www.adobe.com/cfusion/entitlement/index.cfm?e=fmle3 (when you click on Agree - it will prompt for your Adobe ID - then when you reach Download page - you will get Optional Download of Authentication Add-in)

How to integrate flash media server 4.0 live streaming for iOS devices ?

Hi All,
I have website which has live streaming module its working fine, same module i want to integrate for iOS devices. For live video streaming we are using FMS 4.0. So please let me know how we can integrate this for iOS devices using flash media server 4.0.
Thanks in Adavnce
Mohammad Sharique

You need to place the crossdomain.xml in the webroot folder. Create a text file in the webroot folder using notepad, and call it crossdomain.xml. The text below will give you a wide open access policy, which is fine for testing.
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
<allow-access-from domain="*" />
</cross-domain-policy>
For debugging HTTP streaming I recommend you get hold of something like Charles or Fiddler. These will greatly assist in pinpointing any issues.

User Auth. for Live Streaming with Media Encoder 2.5 and FMSS

Hi,
i am currently thinking of buying the Flash Media STREAMING
Server (~995 $) and in order to see if this is the right choice, i
also take a look at the Wowza Media Server for comparison.
I want to support Live Streaming from Events with Flash Media
Encoder 2.5 and for this i'll need a user authentification for
giving access to special publishing Users only. Wowza Media Server
supports a User Authentification by parsing the connecting URL,
witch is delivered by the Media Encoder on starting a Connection,
and therefor grants or denies access to the publishing function.
Only Users with the right Access Persmissions, which is written
trough a password and the onPublish Comand in the url, can publish
Live Streams. Everyone can watch the Live Stream, if no restriction
to the onConnect Command was made.
The Problem in this case is, i will need seperate Application
folders for every user who should be able to start a live stream.
This would be a horrible effort...
more info ==>
http://www.wowzamedia.com/forums/showthread.php?t=1281
Is there a similar way to support authorisation for starting
publishing a LiveStream to the Flash Media Streaming Server, or do
i need the Flash Media Interactive Server?
How can i restrict access to users, who should not be able to
start a live stream on my FMSS?
Thx for your help,
Tobi

quote:
Is there a similar way to support authorisation for starting
publishing a LiveStream to the Flash Media Streaming Server, or do
i need the Flash Media Interactive Server?
Unfortunately no, there isn't. I struggled with same issue
earlier, and we were forced to purcahse the Interactive edition. As
the 'Streaming' version only runs Adobe-signed apps, there is no
way to change things that happen within the onConnect handler.
Furthermore, guys at Adobe haven't provided any possibility for
even simple access control through configuration files for built-in
apps that come along with the Streaming Server edition.
- Jakki

Live Streaming video and Flex2(3?) + Flash Media Server?

I've seen alot of topic on how to create video sites for
clips, etc. with Flex and Flash Media Server, but how about live
streaming video, like a concert or a seminar. I can't find any
information on this at all, could anyone point me in the right
direction?

What you need is grab video/sound form camera/mic, publish it
on FMS and let the other clients play it. In a few steps:
// get camera and mic
var cam:Camera = Camera.getCamera(); // get default camera
var mic:Microphone = Microphone.getMicrophone(); // get
default mic
// if you have VideoDisplay, for monitoring
videoDisplay.attachCamera(cam);
// create new RTMP connection to FMS/your app
var nc:NetConnection = new NetConnection();
// new stream should be create *after* nc has connected, not
before
// so this is executed after the below nc.connect() succeeds
nc.attachEventListener(Event.CONNECT, function(){
var ns:NetStream = new NetStream();
ns.attachCamera(cam);
ns.attachMicrophone(mic);
ns.publish("streamname", "live"); // or "record" if you want
to live+rec
// connect to default instance of app 'appname' on your FMS
nc.connect("rtmp://fms.ip.address/appname");
If you're using Flex2 and FMS2 (the latest FMS is 3), you
might need to
cuange the connection encoding to AMF0 (which is what FMS2
uses) in order for this to work.
Hope this helps; I've written it from my head so it probably
has mistakes, but it's the general workflow; the docs in the
language reference for specific functions mentioned here will also
help.

Adobe Media Live streaming Server issue.

Adobe Media Live streaming Server. I cant get it to connect with the vhost IP and when it connects with our main IP I was able to bring up a cam and then to check it I closed out the server side and reopened it, started it up and then it wouldnt connect to that same cam page.
Any suggestions?

bump

Fms live stream server stops sending data around 4+hrs

Hi,
I am having some issues with fms servers livestream connection. My rtmp client connects to the server ok and rtmp data flowing ok for about 4hours, in the wireshark trace I can see that the server just stops sending data roughly after 4hours. The server version is 3.5.1, and I also try it on a 4.0 server the data stops coming from the server as well after 5+hours. There are no errors or any indication of session disconneciton in the diagnostic logs. I have also looked thru the settings in applicaiton.xml and server.xml I just don't see any obviious reason for the issue. I do send rtmp Acknowledgement to server after the client receives "window size" bytes, and the client sends ping response to server. Are there any other that client needs to send back to server? It would be greatly appreciated for any pointers and help. Thanks.

Updates:
An interesting observation is that the server stops transmitting data when server-to-client bytes reaches ~4G. The number sounds too much like a system resource limitation. It is a live stream and it is not being recorded so I am not sure where is the 4G limitation coming from. FLVCACHE_MAXSIZE is for recorded stream, I think, and it is set to the default 500MB.
Also, in the access log the check point for connect-continue and play-continue keep showing status of 100, which is supposed to be "Waiting for the application to authenticate.". Is this correct? The connection is successfully connected and play command is successful as shown in the access log. swfVerification is disabled in application.xnl. what does the server waiting for in respect to authentication?
Below is the log:
connect-continue
session
2012-03-22
01:51:24
Eastern Daylight Time
10.200.4.224
10.200.4.172
1176
1
44
_defaultRoot_
_defaultVHost_
live
_definst_
0
100
10.200.4.224
rtmp
rtmp://10.200.4.172/live
rtmp://10.200.4.172/live
file:///mac.flv
LNX 9,0,48,0
4702111234558869871
3183
3840850027
normal
file:///mac.html
play-continue
stream
2012-03-22
01:51:24
Eastern Daylight Time
livestream
10.200.4.172
1176
1
44
_defaultRoot_
_defaultVHost_
live
_definst_
18044
100
10.200.4.224
rtmp
rtmp://10.200.4.172/live
rtmp://10.200.4.172/live
file:///mac.flv
LNX 9,0,48,0
4702111234558869871
3183
3840850027
normal
livestream
rtmp://10.200.4.172/live/livestream
rtmp://10.200.4.172/live/livestream
flv
18085866
0
3829693036
1
file:///mac.html
-1
-1.000000
Any pointers would be greatly appreciated. Thanks.

Flash media live encoder, play live streaming failed!

Hi, I install a fms3.5 and fmle3.1 on my computer. In fmle, I set video format is h264,and fms url:RTMP://192.168.8.6/live ,stream: livestream. The input and output windows' video is ok.
The following is fmle log:
Tue Jun 22 2010 12:25:19 : Primary - Connected
Tue Jun 22 2010 12:25:19 : Primary - Network Command: onBWDone
Tue Jun 22 2010 12:25:19 : Primary - Stream[11] Status: Success
Tue Jun 22 2010 12:25:19 : Primary - Network Command: onFCPublish
Tue Jun 22 2010 12:25:19 : Primary - Stream[11] Status: NetStream.Publish.Start
Tue Jun 22 2010 12:25:19 : Session Started
Tue Jun 22 2010 12:25:19 : Video Encoding Started
The following is my source code to play live stream:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    <mx:Script>
        <![CDATA[
         import mx.controls.Alert;
         private function showFlv():void {
            //myVideo.source = "rtmp://192.168.8.6:1935/vod/test.flv";
            myVideo.source = "rtmp://192.168.8.6:1935/live/livestream";
             Dumper.info(myVideo.source);
         ]]>
    </mx:Script>
    <mx:Panel width="100%" height="100%">
      <mx:VBox width="100%" horizontalAlign="center">
        <mx:Text text="code display"/>
        <mx:Button label="play flv" click="showFlv();"/>
      </mx:VBox>
      <mx:VideoDisplay width="100%" height="100%" id="myVideo"/>
    </mx:Panel>
</mx:Application>
If I use myVideo.source = "rtmp://192.168.8.6:1935/vod/test.flv" ,it can play video. Use :myVideo.source = "rtmp://192.168.8.6:1935/live/livestream", Can't get video. Why?
I just want to play live video on pc.

Who can help me??

P2P-based live streaming media data

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