Streaming audio-video on the mobile device

Please, I must do the streaming audio-video on the mobile device using a server standard.
I must to program the application for the server using j2se:in this case how i can send the file audio/video?This file have specifies classes?
For the client i must using the j2me:in this case how can receive the file audio and creating the player?
Thanks.

Hi, please help,
I have problem in this area also,
am intending to stream audio and video data to mobile phone using j2me for my bs project.,
is that true, midlets can only 'plays back' one file at time specified by url?
I want to store many files in database( e.g ms access), and call them to midlets, to make some how interactive and real,because i have tomcat server installed in my pc.
is this possible?
How can i call file stored beyond path of WTK ?
can i store audio/ video file in ms- access?
Please, please help !
thanks in advance.
Message was edited by:
nbkamani

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How to stream audio / video in java?

Hello.
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.

Is it possible to stream Video to Apple TV (via Beamer with no real audio output) and at the same time stream Audio to an Airplay compatible device? (Bose Soundtouch)

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When I stream a video via the Ipad, I either have the sound on my Soundtouch or Video via the beamer. Is there an option to have both at same moment? It really looks like I cannot have both at the same moment?
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Welcome to the Apple Community.
Unfortunately, you can't split the Airplay stream as you would like to.

Video latency on mobile device

I am working on an application that connects two peers in audio/video using rtmfp.
When a peer wants to talk with another, first it exchanges peer-id and stream-name with the other and then publishes its microphone/camera (in “live” mode) and plays the other peer stream. As usual in Flash platform. Message exchange in my application is server directed (I am using FMS 4), stream connection is peer-to-peer.
Now, all works fine when the two peer run on Adobe AIR for PC. But when one or both run on a mobile platform (iOS 4.3.3 for example) I experience a strange random latency. Sometime latency on the mobile side is near zero, sometime it grows to 3 even 5 or more seconds. So the communication is not really possible.
I tried to narrow down latency by testing different values of bufferTime both on incoming and on outgoing stream: bufferTime = 0 does not work fine on mobile side; using bufferTime = 0 in the output stream and bufferTime=0.3 on incoming stream works better. With this values when video is not involved all works fine. But when one of the two peer attaches a camera then the result is not always the same: sometime latency is acceptable sometime it is not: bufferLength of the incoming stream (playing stream) grows to 3 or more seconds and then it goes up and down. Using bufferTimeMax do not improve latency. On the pc side bufferLength is near zero.
I noted that on the pc side sometime I got a NetStream.Buffer.Empty on the incoming stream so I am thinking that the problem is related to cpu resources on mobile side (I am using an iPhone 4). To lower resource consumption I set Camera.setQuality(0,100) and Camera.setMode(80,60,3). Microphone is configured to use Speex with encodeQuality = 6. But the problem remains.
Is the video playback of Flash Air on mobile device fast enough?
The two peer in my test are on the same LAN and the mobile device use Wi-Fi access. I use Flash CS 5.5 and AIR 2.7.
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Hi,
after a month of tests I stopped looking for a solution.
In the last test I tried to split (desynchronize) audio stream and video stream so I had two different play buffers on which I tested different bufferTime values. I was hoping to have a low predictable latency on audio playback (that is more important for my application) and a different not specified latency on video. But my test failed: this solution works as the solution where audio and video have the same buffer and this is very revealing.
I don't know if this problem is related to:
a my error in configuring audio/video stream
a flash player bug (on iOS) in live mode
a high resource consumption of the Sorenson Spark codec implementation on AIR for iOS
I posted my initial question to learn from someone anything useful to distinguish among those alternatives. I tend towards the third.
Michelangelo

Video playback on mobile device

Hello,
I'm new here and probably this was asked before me, but I spent a lot to search on the net and actually couldn't find much.
I'm developing a web based application dealing with video - it should be controlable and have to interact with other elements of the app. The client now asks mobile apps - for Android and iOS, that should have same features.
I looked for solutions to play video on mobile device using Flex and building mobile apps but nowhere could find a proper explanation and results about framerates and performance. The other problem I think will be that the mobile device should play streamed video (which can be encoded in any suitable format) as well as native video - usually h.264, that as far as I understood, is not possible on iOS (I coudn't find out about Android).
On my Android device I can play very smoothly even web videos (in the browser) that are not "optimized for mobile" as it pops up during playback. I made a test and build a simple app that just plays a remote video using the Spark's VideoPlayer and its framerate was OK but the picture was terrible - some strange coloured lines appeared.
Is there anybody who has more info about video playback on mobile device, codecs, components etc. I need that info to make the choice to stick with Flash development for all the apps or to go for native development with platforms' SDK.
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Can you say even more about what it is you want to do? I mean, what will the application do, not what are the technical aspects of how it will work?
For a point of comparison, look at this thing I did:
http://www.cartoonnetwork.com/mixit/
If you try out the Make page, both the template ones and the from scratch one, as well as the View page to see the playback unit in action. Is what you're going to do anything like that?
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At some future time there will hopefully be StageVideo that can use H.264, but I don't know when that will be, or whether it will be responsive enough (FLV is much faster to connect to and play than H.264).
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Streaming audio-video on the mobile device

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