Multiple NetStreams

Hi, I'm building a video player which loads .flvs into a
movie clip from a menu and places the movie clip on the stage using
getNextHighestDepth. Everything works great except the client would
like the viewer to be able to leave clip A, view clip B and return
to the last viewed point in the A clip's timeline. Is this possible
without getting into a serverside streaming application? Would I
need to create multiple movieclips with embedded video objects, and
start swapping depths on the stage? Or can it be done with multiple
netStream objects? Thanks for any guidance.

I'm working on a chat app that shows up to 10 live cams at a
time in one swf. When a user joins the room the publish through a
separate connection, but all of the subscribes are through one
connection - I thought it would help to minimize connections to the
server to stream through one connection.
Is it recommended to separate these out into individual
connections?

Similar Messages

Multiple NetStreams - IE 6/7 Issue

Hello folks,
I need help with a NetStream/IE specific issue (possibly bug
in IE or IE FlashPlayer 9).
Problem Background:
- I made flash flv player for client to play multiple FLV
pseudo-streams (php-streamed) and keep them synchronized
- I have 2 NetStream objects for two separate streams
- Each stream can be changed via a list component to a
different FLV while it's playing - it pauses, starts loading the
new stream, then keeps playing the 2 streams, in sync
- The "player" resides on one domain, and the videos on another
(simply due to more storage space available on the other domain)
The "Blockage" Problem:
- Works great in FF on OS X 10.4, Win2K, WinXP and WinVISTA
- Works the first time in Win2K IE (Internet Explorer) 6, and
WinXP IE7 - but when you close the tab or window, without closing
the browser entirely (have another tab or window open - such as the
one with the link to the flv player), then try opening the same URL
again, or a similar one, IE browser will not load the FLV file
"stream" anymore - again it works fine the first time around. This
problem is so severe that the entire domain that the video was
being loaded from in the first place can no longer be visited by
the browser; i.e. if the domain the video was being loaded from was
http://domain.com" - IE can no longer
visit it (any page on it anywhere...) but it can visit "
http://www.domain.com". To clear
up the browser "blockage," I have to close the browser completely,
then re-launch it.
What I've Tried:
- In places where I'd call "netStrmObj.close()" - I tried
adding "myVideo.attachVideo(null);myVideo.attachAudio(null);" -
this just makes the player really freak out for a while before
changing to a new video, which still happens, but the doesn't do
anything for the problem
- I tried not using "netStrmObj.close()" at all... no
noticeable difference
- I added "_root.onUnload = function()
{myVideo.attachVideo(null);myVideo.attachAudio(null);}" instead.
This definitely made a difference. On Win2K the player worked on
repeated calls for a while, but the response was terribly slow -
take almost a minute to respond at times (where normal response
time would be 2-3sec), then the same problem would occur. Sometimes
the same problem would occur right away, like it did at first. On
WinXP it worked like a charm, even on repeated calls (closing
tabs/windows in between each call); then I interrupted my testing,
which had been going so nicely, and had a short dinner for about
15-20 minutes, then resumed testing - the browser "blockage" had
returned (I don't know if the delay was just fluke or not - but the
problem is obviously still there...)
Is there any *NetStream*/Flash/IE wizard out there who has any
ideas about this? I will be gone for a few days before I can
check this posting - but I need results by Wed/Thurs next week, so
any help before then would be greatly appreciated.
Thanks for your time!

John Waller wrote:
Right, ok. Are many using this at the moment?
The progressive HTML5-ers are using shiv files or some description.
Is it completely without any issues if we move from html 4 to 5 now then?
I'm sure shiv files have their limitations but most reports/blog I see online are reporting good results (or they're not howling loudly about bad results).
Only one issue for me then DWCS4. Don't think its worth the upgrade to DW5.5 at the moment needed to be able to see html 5 in design view. Probably wait for DW6 and get up to speed with html5 in the meantime as I don't fully know the new tags yet

Can one connect multiple NetStreams to the same peerID?

Does it make sense to have two separate netstreams connected to the same remote p2p connection?
I think I would like to separate the audio and video publishing and playing so that I can fine tune permissions (e.g. publish audio but not video to some users but not others).
Equally, are there issues with publishing two separate NetStreams on the same p2p connection?
Initially I thought this would be possible, but I am having problems playing streams when connecting users on different ip addresses.

You can play or publish as many streams as you wish on the same connection. Just mind the bandwidth.
However, publishing audio and video on different streams may not be a good idea as they're sure to be out of sync.
To save bandwidth and play only the audio of an audio/video stream set NetStream's receiveVideo to false.
Or, in your fine-tuned permissions scenario, you can publish one stream with audio only and one with audio/video. A little redundant but audio datarate is small and may be worth it.

Issues pre-buffering multiple NetStreams

Hi,
I am running into some streaming bugs and am wondering if anyone else has come across them. Very grateful in advance for any help as I've been banging my head against this for a week now.
First of all, I'm finding that no matter what value I set for a NetStream's bufferTime property, the NetStream will not begin actually playing until the bufferLength property is over 2 seconds. This is not what Flash documentation says (that the default value of bufferLength is .1 seconds). Could this issue a function of the FMS configuration with my RTMP hosting account? Is it something I can resolve with my asc file?
Also: In my Actionscript 3 app, I need to pre-buffer a number of video streams so that any one of them can be triggered immediately later in the program. I do this by building an array of NetStreams (within a single NetConnection), then playing each of the streams I need to pre-buffer and immediately pausing each too. This is successfully causing them to buffer in the background, so that they're ready for immediate play when I need them. When I do this with just one NetStream, it works fine. But with more, the streams are behaving unpredictably. They are successfully buffering, but when I need to actually play them and I go to unpause them (Netstream.resume), the NetStreams are generally NOT playing back correctly. Their behavior is not consistent, and they mostly play with no video, or no audio OR video. The one exception is the FIRST NetStream that I started pre-buffering, which is the only one that's consistently playing back fine with its audio and video. Again, if I unpause any of the other NetStreams, they play back with just audio, or not at all. Do you have any idea why this could be happening? I have the app working perfectly with local files, so I know it has to do with the streaming piece.
Thanks so much!

Hello,
I can help you with your first problem. In your Aplication.xml there are some lines like this:
         <Live>
                
                <MaxAudioLatency>2000</MaxAudioLatency>
                
                <MinBufferTime>2000</MinBufferTime>
            </Live>
            <Recorded>
                                                                  <MinBufferTime>2000</MinBufferTime>
            </Recorded>
This lines configure the min buffer timer, put a lower value on them (use the one on the live tag to live stream and recorded tag to recorded stream).
I holpe it could help you
Mairum

1 netconnection with multiple internet explorer windows with netstream

Hi everybody,
I was wondering if it was possible to:
1-Open a flash in an IE window with a netconnection (to a
Flash media server appication)
2-Open IE popup windows to display multiple Netstreams (using
the same netconnection)
I want to open multiple netstream videos and be able to move
then around the screan, outside the first Flash that connect to the
netconnection.
Is that possible without having to open a new netconnection
each time?
Thanks everybody

AFAIK, it can't be done. You can pass data between .swf's
with localConnection, but I don't know of any way to do the same
with a stream. You'll need to have each .swf make it's own
netconnection.

How can you toggle H264 on and off in a NetStream?

Hello. Let's say you have the following code that switches your stream to use H264:
var h264Settings:H264VideoStreamSettings = new H264VideoStreamSettings();
h264Settings.setProfileLevel(H264Profile.BASELINE, H264Level.LEVEL_2);
stream.videoStreamSettings = h264Settings;
Let's say you want the user to be able to keep clicking a button that will switch the stream back and forth between this and its default, non-H264 settings. How can you do this? I don't want to recreate the NetStream or have multiple NetStreams or anything else really sloppy like that. I tried looking up the videoStreamSettings property in the main docoumentation for a NetStream (http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/NetStream.htm l), but they don't even formally list it for some reason. Thanks!

There is no way, other than your current approach, to do this.
You can submit feedback to Apple: http://www.apple.com/feedback/iphone.html.

BEX Exception with NetStream

Hi,
We have a flex component, which need to simultaneously stream upto 16 CCTV camera streams. We are using a Media Server(Wowza) to convert the RTSP stream to RTMP and display in flex.
Initially we tried the video display component, available with the flex framework..but when we were streaming more streams the application hanged and the PC monitor started to flicker. because some of the camera's will be not reachable in our deployment
Hence we removed the videodisplay component and wrote our own custom classes and add the video component at run-time. We are creating a single netconnection object and multiple netstream objects(one per CCTV/surveillance camera stream).
video = new Video(videoWidth, videoHeight);
video.name = "camerafeed";
video.attachNetStream(netStream);
addChild(video);
But after a while we are getting BEX (Buffer Overflow Exception)..
Appreciate if somebody can explain the maximum limit of the video component and the limits for the number of netstreams that can be created in one netconnection?.
Why is the VideoDisplay Flex component not able to switch between multiple camera's and display multiple streams?
Our PC is windows 7, having AMD Radeon H6650 graphics card.
Thanks,

Mavi:
Have you ever received a resolution to this error?
We have a user getting this on an infrequent basis... not consistently.
Any suggestions appreciated.

Video playback issues in Air for Android

Hello everybody
I am developing an advertisement application which plays multiple videos. I have faced a very strange problem: nor the simple Video nor the StageVideo are not visible when I run the app on target android device. I can hear the audio but the only way to get the video is to press back button and then get back to app but in this case the video goes over the UI. This happens only on a target device which is a chinese sibo android tablet. It has android 4.1 on board. I have seen a lot of people had the similar issues:
http://forums.adobe.com/message/5429125
but the solution mentioned there - adding <containsVideo>true</containsVideo> to the manifest xml doesnt help
I am using adobe air 4.0 sdk and the air 4.0 runtime on the device. I have tried to change renderMode to CPU/Direct/Auto but it doesn change anything.
The other three android devices I have - toshiba thrive tablet(4.0.4)/ eken tablet(4.2.2)/ htc desire c(4.0.3) play all the video content without any problem.
Any advice will be highly appreciated,
Max

Hi, Chris,
I think this issue: Bug#3832525 - [Android] Video + Stage3D = Video don't work but sound continue playback
Also there is many critical video playback issues:
Bug#3759420 - [Platform_Windows] GPU accelerated video stop playing when screen resolution changes after NetStream.Buffe…
Bug#3810201 - [Android] H.264 video rotating problem
Bug#3503389 - [Platform_Android]StageVideo attachCamera()
Bug#3802932 - [iOS] Video stops playing
Bug#3840986 - [iOS] Simple Video object doesn't work with H.264 (MP4) videos
Bug#3779843 - StageVideo + NetStream + Starling = R6025 Error
Bug#3626740 - H.264 playback conflicts with Stage3D (Android)
Bug#3832327 - [Android] NetStream decodedFrames don't work
Bug#3832141 - Video is not working if you seek on NetStream.Play.Stop and have a bufferTime
Bug#3810979 - AIR on iOS: Using StageVideo makes 2D Display objects opaque/black over Stage3D
Bug#3578045 - new Video() android black screen
Bug#3703836 - Black screen on Samsung Galaxy S4 and Nexus 7 device
Bug#3837870 - [iOS] StageVideo + Stage3D = video not displaying but sound playback
Bug#3840983 - [Android] Returning from Alarm Clock causes black screen when using Video with GPU acceleration
Bug#3840999 - [iOS] [Android] Turn off screen at NetStream.Buffer.Flush causes video not work or crash with some videos
Bug#3844059 - [iOS[ Switching between multiple NetStreams not work
Bug#3773944 - Video view top at android 4.3
and more
All of these problems very important for our business. Often we cannot create stable AIR applications when we need to use videos.
Could you force for faster fixing these issues?

Limit on the number of live streams

Hi,
I wanted to know if there is any limit on the number of live streams that a client can connect to?
For example, there are four live streams s1, s2, s3, s4 being published to FMS, can a flash client subscribe to all the four streams at the same time?
If yes, what is the maximum number of streams that a client can subscribe to and what are the trade-offs?
Thank You for the help.

The terminology becomes important here.
As a client application , i can have four video players on the same browser each subscribing to one of the streams and playing back. Each subscription here happens with a netStream object and this netstream can at one point of time subscribe to only one publishing stream. You can have multiple netstreams.

Disappointed in non-seamless transition

I moved from the UK to the US a year ago leaving a
new core Duo iMac with my folks to help keep in touch.
They connect through BT broadband (wireless hub) but have
no technical skills beyond firefox.
Because of thermal problems (fans always running at high
speed) we decided to upgrade to Leopard to see if this
fixed things. I had hoped that Leopard would read all the
preferences from 10.4 and prove a seamless transition.
However after the install the system no longer connects
to the BT wireless hub. Because I suspect BT have set the
hub not to broadcast its SSID and have WEP passworded it,
it's almost impossible to talk my folks through the process
of setting up the network. They are completely stuck
at this time as BT say 10.5 is too new and Apple say its
a BT issue.
All in all not a good upgrade experience.

I have solved this by using a single NetConnection and then
multiple NetStream Objects.
var nc:NetConnection = new NetConnection();
nc.connect(null);
var ns_bumper:NetStream = new NetStream(nc);
var ns_buffer:NetStream = new NetStream(nc);
var ns_player:NetStream = new NetStream(nc);

Hi,is a rtmfp connection can have multiple netgroup or netStream?

I connect to cirrus only one connection.Then I creat multiple netgroup with this connection.Whether to support?
will be conflict between multiple netgroup？or must creat multiple connection?

you can create multiple NetGroups and NetStreams on one NetConnection.
Cirrus will only bootstrap 16 groups per NetConnection.

How can I append multiple parts to NetStream with appendBytes

Hi,
I hope someone can help me.
Problem:
I load a flv file with the FileReference class. After that I append a part of the ByteArray to the NetStream with appendBytes.
Later I want a next part append to the NetStream. It doesn't work.
Is that possible?
Code:
          public function init():void
                myFileRef = new FileReference();
                myFileRef.addEventListener(Event.SELECT, selectFile);
                myFileRef.addEventListener(Event.COMPLETE, playFile);
                myOpenButton.addEventListener(MouseEvent.CLICK,browserForFile);
            private function browserForFile(e:MouseEvent):void
                myFileRef.browse([new FileFilter("Flash-Videos (*.flv)", "*.flv;")]);
            private function selectFile(e:Event):void
                myFileRef.load();
            private function playFile(e:Event):void
                byteArr = myFileRef.data;
                var bytes:ByteArray = new ByteArray();
                byteArr.readBytes(bytes, 0, 3031964);
                _netConnection = new NetConnection();
                _netConnection.connect(null);
                ns = new NetStream(_netConnection);
                ns.addEventListener(NetStatusEvent.NET_STATUS, netStreamStatusHandler);
                ns.client = new Object();
                display.attachNetStream(ns);
                ns.play(null);
                ns.appendBytes(bytes);
                videoDisplay.addChild(display);
            private function loadNext():void
                var bytes:ByteArray = new ByteArray();
                byteArr.readBytes(bytes, 3031964, byteArr.bytesAvailable);
                ns.appendBytes(bytes);
friendly
Daniel

Enable the menu bar with Ctrl+B. Then use File > Add Folder to Library.
tt2

Multiple video playback issues

Hi All,
I would dearly appreciaty any light anyone could shed on this issue - I have run into a couple of Flash bugs that have stumped me for quite a while, and my deadline is aproaching fast.
Essentially, I would like to play back 3 reasonably high res videos (On2 VP6-S) simultaneously in one Flash App (using flash.video, netstream and netconnect - code only). Unfortunately, when I do this, the video playback drops a lot of frames, however, CPU usage does not go much above 50% - spread over both cores. I'm using a Core2Duo. If I play the same 3 videos simultaneously in 3 separate flash apps (FP10), they play much better (and use close to 100% CPU). I even tried creating it as an AIR app with 3 separate windows (NativeWindow), but that made little difference. I have lodged this as a bug via the Flash Bug Reporting System (http://bugs.adobe.com/jira/browse/FP-2341).
And yes, I do need to be doing something as crazy as this - it is for a pretty cool kiosk app, so I know what hardware will be used (and it has a good Graphics Card).
One promising workaround appeared to be playing back a single NetStream in multiple Video instances, as it is NetStream that does the decoding, so I could decode once and present it in 3 places. Two of my video objects are actually the same flv (on different monitors), so there would be a 33% saving right there. If necessary, I could encode both flvs into a single 1920x1200 flv (I've checked - it would play back ok) and then use video.mask to show the relevant bits.
However, another bug has been reported at http://bugs.adobe.com/jira/browse/FP-920 saying this does not work - Video in the object that last called attachNetStream(ns) will play, all others will freeze. They do mention a workaround that gets both videos to play - reset the size of freezed videos on ENTER_FRAME event. However, I cannot get this workaround to work - my first video is empty (not even frozen).
So there are a couple of things I would love any feedback on. Firstly, if anyone has insights on how I could get this to work. Secondly, if anyone could try the "multiple videos on one netStream with workaround" code below (simply copy, paste and point to a relevant flv) and let me know if it works and the versions of software they used, I'd be very thankful.
---------------Code Begins-------------
import flash.events.Event;
import flash.media.Video;
import flash.net.NetConnection;
import flash.net.NetStream;
showRedrawRegions(true); // both the placeholders and the entire window redraws every frame.
// When only video1 is attached, only video1's region is redrawing
// When both videos are attached, both video's regions are redrawing, BUT video1 is empty.
trace ("Capabilities.version = " + Capabilities.version); // = WIN 10,0,22,91 // in Flash CS4 10.0.2
//var nc:NetConnection = new NetConnection( null ); // Got Eror: 1137: Incorrect number of arguments. Expected no more than 0.
var nc:NetConnection = new NetConnection();
nc.connect(null);
// Connect nc here ...? Unnecessary in this case?
var ns:NetStream = new NetStream(nc);
ns.client = new Object(); // Simplest way to deal with cuePoints and metaData by doing nothing. For more, see http://blogs.adobe.com/pdehaan/2006/07/playing_back_flvs_with_actions_1.html
var stream:String = "test.flv";
var video1:Video = new Video(); // Defaults to size of 320x240
var video2:Video = new Video(); // Defaults to size of 320x240
video2.x = 320;
addChild(video1);
addChild(video2);
ns.play(stream);
video1.attachNetStream(ns);
video2.attachNetStream(ns);
// PROBLEM: Video in the object that last called attachNetStream(ns) will play, all others will freeze.
// See WORKAROUND below for solution:
//WORKAROUND to stop the first split stream from freezing:
addEventListener(Event.ENTER_FRAME, onEnterFrame);
function onEnterFrame(e:Event){
video1.width = 320;
video1.height = 240;
trace ("video1.videoWidth = " + video1.videoWidth);
trace ("video2.videoWidth = " + video2.videoWidth);
// When only video1 is attached, video1.videoWidth = 1920, video2.videoWidth = 0
// When both videos are attached, video1.videoWidth = 0, video2.videoWidth = 1920
---------------Code Ends-------------
Letting me know what exact versions of the following software was used would help a lot:
- Windows/OS (e.g. XP SP3).
- App code was written in. (e.g. Flash CS4 IDE 10.0.2, Flash Develop 3.0.1).
- App code was compiled in. (e.g. Flash CS4 IDE 10.0.2, Flex SDK 3.4.0.6955).
- Type and Version of Flash Player used (e.g. Standalone Debug Flash Player v10,0,22,91).
The versions I used are listed above.
Lastly, for what it is work, I found three interesting/informative results, but they didn't help me:
- When only video1 is attached, video1.videoWidth = 1920, video2.videoWidth = 0
When both videos are attached, video1.videoWidth = 0, video2.videoWidth = 1920
- When only video1 is attached, only video1's region is redrawing
When both videos are attached, both video's regions are redrawing, BUT video1 is empty.
- var nc:NetConnection = new NetConnection( null ); // Got Eror: 1137: Incorrect number of arguments. Expected no more than 0.
So I had to change it to:
var nc:NetConnection = new NetConnection();
nc.connect(null);
Does this mean my NetConnection class is different and maybe incompatible with this workaround?
Many, many thanks,

How to view/hear pretty much everything:
Assuming you already run OS 10.4.9 or above and have Quicktime 7.2, and are using Safari 2 or 3, download and install (or re-install even if you already had them) the latest versions, suitable for your flavor of Mac, of:
RealPlayer from http://uk.real.com/player/
Flip4Mac WMV Player from http://www.microsoft.com/windows/windowsmedia/player/wmcomponents.mspx (Windows Media Player for the Mac is no longer supported, even by Microsoft)
Perian from http://perian.org/
Adobe FlashPlayer from http://www.adobe.com/shockwave/download/download.cgi?P1ProdVersion=ShockwaveFlash
In Quicktime Preferences, under advanced, UNcheck Enable Flash, and under Mime settings/Miscellananeous only check Quicktime HTML (QHTM).
In Macintosh HD/Library/Quicktime/ delete any files relating to DivX (Perian already has them).
The world should now be your oyster!
You should also have the free VLC Player from http://www.videolan.org/ in your armory, as this plays almost anything that DVD Player might not.

Can a single license be used to multiple pieces of content?

What I'd like to do is have a user retrieve a single license and be able to view all content belonging to a bundle of media.

Hi Pedro,
Thanks for the clarification. I'll try to answer this question from 2 different angles. : )
[ 1 ]
Flash Access differs from WMDRM/PlayReady in the way licenses are acquired. With Flash Access, the DRMManager.loadVoucher() API is used to retrieve a license. There is no need to specify a Key/Content/License ID; the only data required is the content's metadata (DRMContentData), which contains all the information needed by the client and server to issue/use the correct license.
For additional information on the client workflow involved with playing back Flash Access content, please view the AS3 Developer's Guide for Flash Access.
[ 2 ]
To answer your original question - yes, you can encrypt multiple content using the same Content-Encryption-Key, and also the same License-ID (See our Java API). By doing this, your client can download a single license, and all encrypted content you have can utilize the same license to playback video. However, your workflow will be the exact same (acquire metadata, call DRMManager.loadVoucher(), call NetStream.play()), so you won't really notice any difference between using the same CEK or LicenseID.
Make sense, or have I added more confusion?
cheers,
/Eric.

Playback of Multiple Videos Simultaneously -- onCuePoint

Hello AS3 Gurus!
I have multiple instances of a video playback object (not an FLVPlayback component) on my stage (named "videoScreen1", "videoScreen2", etc...). I have separate NetConnections, NetStreams, and NetStatusEvent handlers set up for each of the video instances. Everything works fine (playback of each video in each instance happens as expected and the NetStatusEvent handlers fire off, as expected, for each of the video streams) except I cannot figure out how to separately keep track of the OnCuePoints events for each of the video streams.
Right now, I have just one onCuePoint function that reacts to the cuepoint info for all the streams at once (with the following code). This misses some of the cuepoints since it seems that it gets a bit confused as to how to handle all the onCuePoint events that fire off from all of the video streams. What I would like is to have separate onCuePoint functions set-up that react to only one stream. That is, have one onCuePoint function react to the video streaming on my "videoScreen1" video object, another that is reacting to my "videoScreen2" video object, etc... How can I do this?
function onCuePoint(cpInfo:Object):void {
     var key:String;
     for (key in cpInfo) {
         trace(key + ": " + cpInfo[key]);
Or, should my question be: "What is the best way to handle the simultaneous playback of multiple video streams and keep track of onCuePoint (and onMetaData) events for each of the streaming videos?"
Any input would, as always, be most appreciated.
Regards,
ropeGun

Hi!
I have had - and still seem to have the same problem. QuickTime 7 will start stuttering after the first change, ie. after the first movie. If you pause playback on and off, the current film will play perfectly - until the next change in the playlist. Then the problem reaccurs.
I cured the situation by going back to QT 6.5.2, where everything works just fine... but you have to do without a lot of nice stuff that QT7 has.
Also remember that QuickTime only supports a subset of SMIL, not all commands.
MacMinis, XServe, Dual 867 G4, Dual 2.5 GHz G5 Mac OS X (10.4.2)

Multiple NetStreams

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