Multiplexing audio and video streams,,,,,,,,,,

hii frnds,,,,,,,,my proj is "Web Conference" ,suppose v capture audio and video streams separately from MIC and webcam respectively now how to multiplex this into a single stream so that i can later upload it to a server and from there clients can download as a single stream and later demultiplex at receiver side

I am programming the videoconference program using Java Media Framework API. I use two session to transmint and recieve the media, one for audio and one for video. Two players are opened to play both media. I would like to know if I can play both media using only one window.

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Multiplex audio and video streams

I am stuck here,I want the audio and video streams obtained after processing by Codes to multiplex to AVI format. I found that this problem has already being posted but no reply. Kindly reply immediately as project is in last phase.

I am programming the videoconference program using Java Media Framework API. I use two session to transmint and recieve the media, one for audio and one for video. Two players are opened to play both media. I would like to know if I can play both media using only one window.

When exporting separate audio and video streams, the audio drifts out of sync

So this is my first slightly larger project in Final Cut Pro X.
When I export my finished project (around 12 minutes long) straight to quicktime, it plays back perfectly.
When I export using compressor, the resulting audio and video streams are two different lengths. The audio comes out a full second longer. If you try to lay them down in a program like Adobe Encore, the audio starts out perfectly in sync. Two minutes in you notice the video is slightly out of sync with the audio. By the end of the video it's comically bad, over a second out of sync.
What's even more vexing is if I try to take the quicktime file that IS in sync upon playback, and try to convert it burn that to a dvd or blu-ray using toast, the problem re-emerges.
I triec searching around, but most of the suggestions that came up were vauge, like, "Upgrade to a real program like Final Cut." (This was in reply to people who were using free software programs.)
I did see one idea surface where 44 and 48 kHz sampling rates don't play well together. So I combed through my project and found all the 44.1 songs that were used, and swapped them out with upsampled versions. Nothing changed. It didn't sound like it would fix it, as people usually said it was a specific amount of frames off, not something drifting out of sync.
So the question is, does anyone have any suggestions on what could be causing this? Thanks! :-)

Project settings can be accessed and changed by selecting the project and pressing command-J. Then, in the inspector, click on the little gear in the lower-right hand corner to access the settings.
Why are you trying to output video/audio separately? If the content plays in-sync when exporting a quicktime movie (using current project settings), you could try separating the video/audio using MPEG Streamclip as a second step instead of using compressor. For audio, don't change the sample rate from the project settings, and use uncompressed audio (AIFF) as the output format.

Audio and video streaming example using USRPs

Is there any example available which can do audio and video streaming together using USRPs.
Thanks.
JK

It is video transmission only. That is the only example I can find that comes close to what you are trying to do. Together along with this demo:
http://www.ni.com/white-paper/13881/en/
You may be able to piece together what you are trying to do. Other than that, I don't see any current audio/video streaming examples. If you pursue this application, don't forget to give back to the community!
http://www.ni.com/examples/

How to demultiplex the merged audio and video streams

Hi. I'm currently working on a video conferencing program. I successfully implemented the program using threads to run the audio and the video clients and servers. The problem with this is that the delay for the transmission of both media is a little too great. So now, I'm trying to merge both media into on DataSource, so then I don't have to worry about sending audio and video into 2 different ports and RTP sessions. I know how to merge the audio and video streams, but I was wondering how to extract each media back after receiving the merged audio and video streams. Any ideas? I used the createMergingDataSource(the_DataSource_array) method to merge both streams. Thanks.
J.L.

I am working on the same problem. Is there any solution yet?
Regards
C.Eckert

Play audio and video streams in only one player

I am programming a video conference system and I need to play streams of audio and video with only one player. I recieve the audio and video with two different sessions and two windows players are opened to play the medias. I want to play both medias with an only window. Can I do this?
Thank you!

I am programming the videoconference program using Java Media Framework API. I use two session to transmint and recieve the media, one for audio and one for video. Two players are opened to play both media. I would like to know if I can play both media using only one window.

Audio and Video streaming speed to high

I'm struggling for a couple of weeks to stream fm radio to my BB. It switches over to wap, and right after that the buffer starts filling. I hear a coupke of seconds of normal sound, and then the speed doubles. Anyone knows what i'm doing wrong?

It is video transmission only. That is the only example I can find that comes close to what you are trying to do. Together along with this demo:
http://www.ni.com/white-paper/13881/en/
You may be able to piece together what you are trying to do. Other than that, I don't see any current audio/video streaming examples. If you pursue this application, don't forget to give back to the community!
http://www.ni.com/examples/

Audio and video streaming

When trying to stream content on Reuters news video streams well, but there is no audio stream. does anyone else experience this problem? I'm not sure if i have accidentally muted audio....any suggestions would be appreciated.

Hi chris1414 and welcome to the BlackBerry Support Community Forums!
Do you only experience this behavior when visiting the Reuters website? Have you tried other sites with streaming video?
Thanks.
-CptS
Come follow your BlackBerry Technical Team on twitter! @BlackBerryHelp
Be sure to click Kudos! for those who have helped you.Click Solution? for posts that have solved your issue(s)!

Synchronize audio and video over RTP

Hi all,
I am new in jmf. Please any one tell me, how to synchronize audio and video streams, when we capture thru audio and video capture devices and send it over network thru rtp protocol and receive at client side. How to syncnronize at client side? Please send me reply if any one have solution in jmf.
Thanks in advance.

Does anyone know about how this is done? I'm doing a videoconference thing with jmf, QoS is a required componenet! So if anyone knows about how this is done, plz share with discussion! All I know so far is that I can buffer the incoming streams to some extend then call syncStart() to start the video with the starting time of the video!

SX10 - calling with no audio and video

Hi
I have problem with SX10.
SX10 with load TC7.3.1.8a4696f. The device is registered at CUCM 10.5.2 with no problems.
And the probblem is:
I cant make calls from ipPhones (SCCP) to SX10 but i can call ipPhone from SX10 (!). Phone is ringing but no audio and video stream is starting.
I also have SX20 but in this case everything is working fine.
Where i should start toubleshooting?

Yes, Actually the problem was firewall rule!
The main problem was that these two endpoints didnt saw each other. ( Ping - Packet loss )
Signalling was working fine because both of them got ping CUCM but not each other :)
So problem is solved.
Thanks.

Can i take both Receveing of audio and video on the same window.

hi,
i m using AVTransmit2 and AVReceive2 for Transmission and Receiving all is doing well but problem is that AVReceive2 show Transmission of audio and video in both different windows and it use different players for audio and video. Can u tell me can i merge both audio and video at the receiving end. i m already mergeing audio and video at transmission end ???. any one tell me how can i solve this problem ???
thx in advance.

Hi,
I have the same situation - to use one window to show both rtp audio and video stream, but use the ControlPanelComponent of audio player to control both players.
I want to use the audio player as the master player so that the video player could be synchronized with it. So: audioPlayer.addController(videoPlayer).
In the only window frame for both players, I want to show the VisualComponent(VC) of video and the ControlPanelComponent(CC) of audio. So I add both components respectly to the window frame, after I got them from each player. Because the streams are coming from the network over RTP, and they do not become realized at the same time, I add the VC and CC of first realized player(no matter it is audio or video) to window frame at first, and then change them to the desired video VC and audio audio CC.
Though I check both player are realized and not started before I call the addController() method, the application stucked in this method. Of course I call it in a try block but no exception was thrown out.
when I use TimeBase to synchronize them, i.e., videoPlayer.setTimeBase(audioPlayer.getTimeBase()), everything goes fine. But, I can not control both players from one ControlPanelComponent in this way.
Anybody having any idea to solve this problem please reply.
By the way, in the example code such as AVReceiver, where audo and video streams are shown on two window seperately, user can use the ControlPanelComponent of audio to control both player, though it seems no relevant code to support that function. The ControlPanelComponent of video can not control the audio player anyway. Anyone having any explanation to this?

How to synchronize audio and video rtp-streams

Hi everyone!
I've tried to make one of the processors, processor1, control the other processor, processor2, with processor1.addController(processor2) but I get a
javax.media.IncompatibleTimeBaseException. I need to synchronize audio and video rtp-streams because they are sometimes completely out of sync.
In JMF API Guide I've read:
"2. Determine which Player object's time base is going to be used to drive
the other Player objects and set the time base for the synchronized
Player objects. Not all Player objects can assume a new time base.
For example, if one of the Player objects you want to synchronize has
a *push-data-source*, that Player object's time base must be used to
drive the other Player objects."
I'm using a custom AVReceive3 to receive rtp-streams and then I create processors for the incoming stream's datasource's, and they are ALL PushBufferDataSource's.
Does this mean I can't synchronize these. If so is there any way I can change them into Pull...DataSources ?
How are you supposed to sync audio and video if not with as above ?

camelstrike wrote:
Hi everyone!
I've tried to make one of the processors, processor1, control the other processor, processor2, with processor1.addController(processor2) but I get a
javax.media.IncompatibleTimeBaseException. I need to synchronize audio and video rtp-streams because they are sometimes completely out of sync.
In JMF API Guide I've read:
"2. Determine which Player object's time base is going to be used to drive
the other Player objects and set the time base for the synchronized
Player objects. Not all Player objects can assume a new time base.
For example, if one of the Player objects you want to synchronize has
a *push-data-source*, that Player object's time base must be used to
drive the other Player objects."
I'm using a custom AVReceive3 to receive rtp-streams and then I create processors for the incoming stream's datasource's, and they are ALL PushBufferDataSource's.
Does this mean I can't synchronize these. If so is there any way I can change them into Pull...DataSources ?The RTP packets are timestamped when they leave, and they are played in order. You can't change the timebase on an RTP stream because, for all intensive purposes, it's "live" data. It plays at the speed the transmitting RTP server wants it to play, and it never gets behind because it drops out of order and old data packets.
If your RTP streams aren't synced correctly on the receiving end, it means they aren't being synced on the transmitting end...so you should look into the other side of the equation.

Operating Windows 7 Home Premium, 2 user accounts. Running Firefox one user can stream audio and video, the other cannot. Can anyone help?

Two accounts set up. One can stream audio and video using Firefox, the other account cannot. The account with cannot stream a/v is able to steam a/v using (gasp) MS Internet Explorer. Is there some setting I have screwed up?

There are some compatibility issues between the latest Flash player and some Firefox add-ons or settings. Could you see whether anything in this article helps: [[Flash 11.3 doesn't load video in Firefox]].

Capture and streaming audio and video

JavaFX supports capture and record audio and video and need some streaming server as woonza, red5, flash media server to play the streaming?

JavaFX does not support flash streaming.
JavaFX does support http live streaming: http://en.wikipedia.org/wiki/HTTP_Live_Streaming
JavaFX does not support audio/video capture (there are other java/native libraries that do that).
See:
Video camera capture/streaming: example implementation "Thread: Video camera capture/streaming: example implementation"
http://javafx-jira.kenai.com/browse/RT-3458 "Camera and Microphone" (go vote for this jira to get some capture technology built into JavaFX).

Streaming interruptions (audio and video)

Sorry if this has been already reported but I can't really find a good answer.
I recently replaced my first gen AppleTV with a new one and have been experiencing audio and video drops intermittently. When I use iTunes to stream music from my MacBook Pro the audio will play well for the most part but, every once in a while the audio drops out then comes back. Very frustrating when you are into a song! Likewise, when I stream from Netflix (which I do often) the movie will be interrupted, the screen goes black and the audio drops for several seconds then comes back. When I stream Netflix from my BD player it works flawlessly. Both the BD player and AppleTV are connected to the router via wires to a 100Mbps switch. The MacBook Pro is streaming via wireless.
Any suggestions?
Thanks!

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Multiplexing audio and video streams,,,,,,,,,,

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