Capture and transmit audio

Hi all,
I need to implement an applet wich can capture audio (and possibly video) from the client for transmit it to the server. Is there some example already developed? Where I can found info about this?
Thanks a lot for your help!
Dmitry Yeskin.

I tried that exaples, but It doesn't work!
If your code works, please send it to me!!!!
I have many problems with given sources: nothing works normally!!!
Thanks,
Best, Aram.

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Capture and transmit live media

I am doing a project that capture live media from a capture device and transmit it to a client. Currently I can capture and transmit, but the problem is when I start transmit, the local player stops playing. If I clone datasource and use the cloned datasource for transmitting, the local player does not stop after it starts transmitting, but the remote site can't receive any stream. In short, my problem is I can't make the local and remote sites play captured media simultaniously. I tried JM Studio and it works, but I can't understand how they implement it. It seems that they didn't use cloned datasource. Anyone who have this kind of experience please help me. Thanks a lot.

If you want to display video while transmiting it you can use the MonitorControl. Consult the jmf guide and solutions or this same forum.
But MonitorControl can be a complex solution, specially if you want to monitor video+audio.
You can also use clones. You need undestand that the clones depend of its original datasource, so this origin have to be connected to the clone works. Consult google or this same forum to more info.
Regards.
Julio.

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).

Audio video capture and stream

hi anyone, i need some source code for my application.
i've got a task from my school to build an application that could capture and stream audio video file..
if you could help me, please send me the code (more simple code is better, coz i'm a beginner)
btw, i use JMF 2.1.1e
thanx before

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Problems in sound capture and JMF deployment

Hello:
I am new to JMF.
I made an applet using JDK 1.3 on JBuilder 5. This applet captures and plays audio. When I run it through JBuilder's IDE, it runs fine. But when I run it independently, the applet's GUI appears but sound recording doesnn't work. Remember that I have JRE1.4.2 and JMF2.1.1e installed on my machine.
When I installed JMF, I enabled the recording, and file writing options for an applet.
To further check the problem, I ran it through JMF debugger. There I found that it says that ,
<permission javax.sound.sampled.AudioPermission "record";> is not enabled.
To enable it I added this entry in java.policy. This allowed the audio capture to work.
But my question is,
1. Why isn't this entry present by default in java.policy?
2. Even one of my user entered this entry in java.policy, but was unable to capture audio.
3. I want my applet to be running with different users having different versions of JRE,JMF and browser settings. How can I do this, without asking my user to do anything? I simply want that when my user downloads this applet, I should provide him with some installation file that installs JMF as well as configures everything on the system in a way that he can use this applet easily.
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Hi.
I am facing very similar problems: it looks like deploying JMF with Java Applets is really a challange!
On my own test installation, if I enable audio capture and file writing for applets through the JMFRegistry, then I am able to record audio from my test applet, even when executed in the target web browser.
Nevertheless, how to deploy the applet in such a way clients won't be required to manually install JMF and enable audio capture and file writing through the JMFRegistry?
It looks like the JMF Customizer is able to produce a custom JAR also embedding user preferences for audio capture from applets and file writing , is this correct?
Any help would be greatly appreciated.
Regards,
Marco.

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I have just upgraded to FCP HD from FCP 3. My problem is all of my audio needs to be Mono only. In v3 this was simple I just chose Mono from the capture settings and Mono for Export.
On FCP HD I can't find any way to capture and export as Mono. When I record Voice Over in FCP all I get is the right channel and even when I set it to pan centre it still only comes out the right speaker after export.
If I've got to manually duplicate tracks everytime it will take me forever.
Anybody know a simple way to capture and export Mono only (the same for both Ch 1 + 2)
G4 DP 1.25 Mac OS X (10.4.6)

This might seem the long way 'round but it may save a ton of time in the end.
Do your FCP mix in stereo as Colin suggests, then take the final audio track into STP or Peak and do a "mix to mono" and then save a new AIFF file with the resulting mono clip.
Then bring that back into FCP on a new audio track, line it up with the stereo, then either disable or delete the stereo tracks. This will give you a true mono audio track.
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Live Capture with a camera via firewire and usb audio interface

I am trying to do a live capture through Final Cut 7.
I want the video feed through the firewire from my HVX200 and the audio feed from a 4 channel usb audio interface (Alesis iO4).
When I have both audio and video input coming in from the HVX200, the live capture works fine.
However, when I change the audio input so that it is coming from the usb audio interface, final cut has an error message saying "Video is not available."
During the preview, I see the video clearly and am getting levels from the iO4.
But when I try to capture, I get the error message.
Is it a processor issue (I've attached my specs below) with problems handling 2 separate inputs?
I'm not quite sure what the problem is.
Any input is greatly appreciated.
Thanks!
Model Name:          MacBook Pro
Model Identifier:          MacBookPro5,3
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.66 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          3 MB
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Hi MtD,
Yes I am changing the Capture preset to iO4. Once that happens, it lets me run both the camera and the iO4 into the laptop but then an error message pops up the moment I try to capture it.
I was only trying to use 3 out of the 4 channels of the iO4.
Thanks!

Is it possible to do the audio capture and playback simultaneously?

In short :
Is it possible to do the audio capture and playback simultaneously? . If it is not supported directly by Sun, pl suggest another way to achieve the same.
In detail:
I am doing a voice chat application by using the streaming through UDP . I am able to play the byte stream. But , is it possible to capture sound simultaneously (while playing the audio) to send to the other end?
Edited by: dhillarun on Jan 4, 2008 7:11 AM

If you're Airplaying from you computer, you might be able to do this. Here's what I would try:
Go to the Airplay icon in iTunes. You should see both your Apple TV and your speakers listed as options. Select "Multiple speakers." You'll see both devices together. Turn the volume all the way down on the Apple TV. You should be getting the video on the TV, but only hear audio through the speakers.
Using the "Multiple Speakers" option will sync the output of your devices so that the sound matches the picture.
I haven't tried this myself, but I'm thinking this would work. However, this approach will only work when using Airplay from your computer – not from am iPad or iPhone – as they don’t have the "Multiple Speakers" option (as far as I know). It also won't work with content streamed directly to your ATV, obviously, because there's no way to stream from ATV to other devices.
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I Want To Transmit Audio from Mic and Video from WebCam.....???????????????

I Want To Transmit Audio from Mic and Video from WebCam on Another Computer. I have used AVTransmit2.java file and AVReceive2.java file for Transmission and Receiving but They Transmit Only Video On Another Computer on a network without any error. Any One Help me How Can i Transmit both Audio & Video at the Same time ????????
i m using This Command for Transmittion
java AVTransmit2 vfw://0 192.168.0.1 192.168.0.2 10000
and this Command For Receiving
java AVReceive2 192.168.0.1/10000 192.168.0.2/ 10002

Excuse me foro my bad English but I speak English like Tarzan.
To trasmit both video and audio I created a MergingDataSource wich incorporates video and audio data sources. Then I created a Processor with this DataSource and a RTPManager for each track of the processor. It works.
Stupendoman

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Hi
I was hoping that someone could help me with mixing a video and audio signal for live playback.
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ok cool VLC seems like a good option, i can capture the video just fine becasue i know the video device name is /dev/video0 but i don't know what the audio device name is..
i have been looking online for a way to find this out. but i have not yet found a way to tell me what the audio device name is for my sound card. (i have the audio input connected to a PCI sound card)
i just found this which helped a bit
http://forum.videolan.org/viewtopic.php?f=32&t=81166
it turns out that when i have a look the sound card i want to use is alsa://plughw:0,0
so i go -> show more options -> play another media synchrously and enter alsa://plughw:0,0. all goes well
Last edited by marno11 (2011-08-18 10:18:26)

How to transmit audio and video simultaneously?

Hi,
I am new at jmf.Now i have a problem that how to transmit audio and video at the same time.The AVTransmit can transmit only one media,audio or video.Anybody have experience with it?Please help me.Thanks a lot!

Hi, audio and video data must be transmitted in 2 distinct RTP sessions, by using different ports at sender side.
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Hello,
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Thanks very much.

I figured it out! I plugged in my 3.5MM auxillary cable I use to plug my iPhone into car stereo jacks from the headphones port on my MPB to the "PC/DVI Audio In" on the back of my Samsung HDTV and voila! It worked! No additional cables (other than these two). No upgrading OS. Yay!
Here's the auxillary cable: http://www.amazon.com/AUDIO-3-5MM-JACK-AUXILIARY-CABLE/dp/B002Q3K0QS/ref=sr_1_1? ie=UTF8&qid=1330576344&sr=8-1
This looks like a great workaround to the MPB to HDTV audio problem! Hopefully my geek status is still intact. W00T!
When in doubt, try all the cables you have in all the different ports. AV hasn't changed much over the years and you can often rig things to work with what you already have. Yay for keeping cables out of landfills and repurposing!

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Unable to capture Video when "audio" is checked.
Error message "Unable to capture Video - check settings for video compressor and Audio compressor". What are these ??
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Addl info
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Capture and transmit audio

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