Continous streaming of video signal on to PDA using TCP/IP?

Hardware :IMAQ PCI 1411
Software :labview PDA module, labview 7.0,7.1.8.0, Labview pocket pc 2002
can i have continous video image on my PDA , image Acquired by the host PC using 802.11g wrelessTCP/IP protocol.( that is continous video streaming on to my PDA device.) I am developing an application to transfer video signals to my pda.I would define my application
I am developing robot having camera on it. my idea is to tranmit video image acquired by camera on host ( i.e robot ) to my PDA using wifi TCP/IP Protocol. i am able to control robot motion from pda using Daq pci-6229 on host.
Thanks in advance.
murari.

I think the only way this would be possible in LV was if you convert the images to the LV picture format, flatten that to a string, send the string over and unflatten it and write it to a picture indicator.
There are several potential problems:
1. 7.0 was the first version of the PDA module. I don't remember how much support it has for the picture control, although I believe it should have enough. The newest version is 8.0, which was just released.
2. Depending on the size of the picture, this can be a lot of data. Since you have a g connection, that should be less of a problem, but it still may be an issue, depending on your frame rate. I once wrote a VI which recognized which parts of an image were changed and used a special (very primitive) protocol to send the data to the PDA (I was thinking of a cellular connection and wanted to minimize the amount of data), but I did that for the LV interface, which was mostly static, and I only detected that when it changed.
3. PDAs have significantly less processor power than a PC. Depending on your frame rate, this may be hard for the PDA.
4. The PDA module only supports 8 bit color, and that will require you to do additional computation to make the picture look normal. 8 introduced 16 bit support.
The upside is that writing the code for converting, sending, receiving and displaying the data is very very simple (assuming you can get it into the picture control format, not IMAQ, which isn't supported as far as I know). Just have a loop run on the computer side which will "acquire" the frame, flatten and send it, and another on the PDA side which will receive, unflatten and display. I think on the PDA side you will have to update the picture pixel by pixel.
Try to take over the world!

Similar Messages

Can I stream live video from mobile to fms using flashlite?

Can I stream live video from mobile to fms using flashlite?
I Know flash lite 4 also not access the mobile camera. But, I need to develop a application it captures the mobile camera and stream the vedio to fms server and display the live event to other mobile users.
Is it possible?
If possible what are the technologies i can use?
Thanks for the help in adavance
Prasad

i have made a few test with Flash Lite 3.0 and Flash Media Server 3 and I have to say that it is pretty easy to stream FLV Video files and Live Video from local web camera to mobile phone. Here are a quick instructions how to do it in Windows (I will publish Linux version later).
Play FLV-video from Flash Media Server 3:
Install Flash Media Server 3 (download developer version)
There are a few sample FLV files in applications/vod/media folder, so you can use one of them for testing
Create a new Flash Lite 3.0 file in Flash
Add a new Video symbol to library
Drag this Video symbol to Stage and give instance name to it: video
Type following programming to timeline:
// make a new video-object
var video:Video;
// make a new NetConnection-object
var nc:NetConnection = new NetConnection();
// check connection status from server
nc.onStatus = function(info:Object):Void {
status_txt.text=info.code;
if (info.code == "NetConnection.Connect.Success") {
startStreaming();
// start streaming video to phone
function startStreaming() {
ns = new NetStream(nc);
ns.setBufferTime(5);
video.attachVideo(ns);
// play sample.flv from server
ns.play("sample",0);
// show info to user
status_txt.text = "Connecting server...";
// connect FMS 3 video on demand service (default port 1935)
nc.connect("rtmp://your.server.ip.here:1935/vod");
Go to Publish Settings...
Set Local playback security: Access network only
Publish your SWF-file
Send your SWF-file to your phone
Test and you should see FLV-video playing in your phone
Play live video from Flash Media Server 3:
Install Flash Media Server 3 (download developer version)
Install Flash Media Encoder 2 (Windows only)
Start Flash Media Encoder 2
You should see your live camera in Input screen
Press Start-button to start sending live video to Flash Media Server 3
Create a new Flash Lite 3.0 file in Flash
Add Video symbol and programming as you did earlier
Modify your programming:
// in startStreaming()-function
// Flash Media Encoder 2 publish stream name is "livestream"
ns.play("livestream",-1,-1,true);
// start connection to Flash Media Server 3
// Flash Media Encoder 2 publishes Flash Media Server's default
// live publishing point, so connect it
nc.connect("rtmp://your.server.ip.here:1935/live");
Publish, test and enjoy
box office movies

I have an NI5911 high speed digitizer and would like to acquire a video signal from a CCD using it. Does anyone know if this is possible without buying any more hardware please? If it is, how would I go about it?

The only thing I succeeded in finding on the NI site was about using a different high-speed digitizer in tandem with an IMAQ card but I was hoping not to have to buy an IMAQ card as it means I may as well not have got the NI5911 (a while ago) in the first place. Any help would be greatly appreciated!

You can certainly acquire video signals with the 5911. The only tricky part is that the 5911 does not have any video triggering options. That means that you will have to either find a way to provide your own trigger based on the video signal (that's where the IMAQ board comes into play) or you can just take a lot of data and keep only the data you need once it is in software. For instance, you could take one large record and then use software analysis to determine where the frame sync occurs. Hopefully this was helpful.

How to acquire a video from a ip camera using TCP/IP?

I have a ip camera connected to a router and I want to acquire its video using tcp/ip. Could anyone help me?
Thanks in advance,
Celia

Hi,
If you really want to do it yourself using TCP/IP you will have to read the standard : http://www.machinevisiononline.org/vision-standards-details.cfm?type=5
Another way is to use NI Vision Acquisition Software, it include all the VI you will need to do image acquisition.
More doc :
Acquiring from GigE Vision Cameras with Vision Acquisition Software - Part I
Acquiring from GigE Vision Cameras with Vision Acquisition Software - Part II
Hope this helps
When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"

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

How can I do live streaming with a Mac Book Pro 2011, using a new model of Sony HD camcorder which does not have firewire out/input? it comes only with a component video output, USB, HDMI and composite RCA output?

I need to do live streaming with a Mac Book Pro 2011, using a new model of Sony HD camcorder (http://store.sony.co...ber=HDRAX2000/H) ..this camcorder model does not have firewire out/input ..it comes only with a component video output, USB, HDMI and composite A/V video output..
I wonder how can I plug this camcorder to the firewire port of my laptop? Browsing on internet I found that Grass Valley Company produces this converter http://www.amazon.co...=A17MC6HOH9AVE6 ..but I am not sure -not even after checking the amazon reviews- if this device will send the video signal through firewire to my laptop, in order to live streaming properly? ..anyone in this forum could help me please?
Thanx

I can't broadcast with the built in iSight webcam... how would I zoom in or zoom out? or how would I pan? I've seem people doing it walking with their laptops but that's not an option for me... there's nothing wrong with my USB ports but that's neither an option to stream video because as far as I know through USB you can't connect video in apple operating systems ..you can for sure plug any video cam or photo camera through usb but as a drive to transfer data not as a live video camera... is by firewire an old interface developed by apple that you can connect all sorts of cameras to apple computers... unfortunately my new sony HDR-AX2000 camcorder doesn't have firewire output...
thanx

Ntsc video signal to image file with PXI-5114?

Is it possible to use a PXI-5114 digitizer to capture a NTSC video signal and reconstuct a single frame to be saved as an image file?

Hi Jason,
I think the example Kyle posted is for the NI 5112 digitizer, which has to use an IMAQ board to video trigger since it does not support video triggering. However, the 5114 is one of the boards that does support video triggering, including the NTSC format. More information can be found in the digitizers help manual (online here). If you are using LabVIEW, we have a basic video triggering example that you can take a look at and try out (the example is called "niScope EX Video Triggering.vi" and can be found from the LabVIEW Example Finder or by going to Start » Programs » National Instruments » NI-SCOPE » Examples from your Windows start menu). If you need to acquire the entire frame, that will probably require you to sample a very large amount of data, in which case you may or may not be able to stream it to disk. In the best case, you can acquire the entire frame in a single record without having to do any streaming to disk. Otherwise, you may need a digitizer that can stream high throughput to a hard drive RAID or something of the sort if you plan on acquiring a large amount of data. Worst case is that it is just too much data, too fast, and it cannot be streamed. Perhaps with more details of the signal and your expected sample rate, we may be able to provide some additional guidance on the possibilities of acquiring the entire frame. Hope this helps!
Daniel S.
National Instruments

Video signal via Airport

Hi.
Is there any way to transfer the video signal using an Airport?

You can use the built-in AirPort in your MBP to wirelessly stream/copy video from iTunes to an Apple TV. In turn, the Apple TV can transmit the video to a connected TV/Monitor, etc.

I am playing TV show from itunes library via Apple TV on my HDTV. However, It is trasnmitting only video signal

I am playing TV show from itunes library via Apple TV on my HDTV. However, It is trasnmitting only video signal & no Audio. I have checked in my itunes, & have ensured "Apple TV" has been choosen in the bottom for streaming.
I have connected APPLE TV to my HDTV via HDMI cable.
Itunes is installed in my laptop.
I access itunes library on APPLE TV Menu & Try to watch the TV show that is downloaded.
But it is only streaming Video & no Audio in that.
Can any one help me here.!!!

3G is too slow. wifi is faster.
Or am I just being too impatient and eager to watch my show?
This is how I do it.
http://www3.tivo.com/products/source/satellite/tivo-directv/index.html

Acquiring and buffering a video signal without additional software

Hi
I have a generic USB capture box to which I am inputting an RCA video signal only (no sound).
Am I able to display the video feed in Labview and continuously buffer 30 seconds of it?
The idea is that when an input trigger fires the buffered video is saved and the live stream continues to save another 30 seconds. Once the trigger has been fired the video does not need to be displayed. When the recording is finished the program continues to monitor and wait for another input.
I have been told that activex will work, but I don't have any idea how to implement it.
I am using Labview 8.0 and as this is at University I don't have access to any labview plugins.
Any help will be very greatly appreciated.
Mike

Hi Mike,
Thanks for using our discussion forums. In
regards to your USB device, we do offer an NI IMAQ driver for USB which can be
found here http://zone.ni.com/devzone/cda/epd/p/id/5030
. Though it is not supported by our application
engineers, this will allow you to perform very basic image acquisition with
your camera.
If you are able to use our Vision products in the future, a
simple way to save a buffered video in LabVIEW is just to build an array of
images until you reach 30 seconds (you can calculate this based on your
frames/sec rate). In a case structure, we can subset the most
recent items into a sub array and save that to file depending on the data
type. In regards to triggering, we can
software trigger this configuration using another case structure in the while
loop so that when it fires the “buffered” image video will be saved.
If you would like to use ActiveX you can learn more about
this application with LabVIEW at our Developer Zone tutorial http://zone.ni.com/devzone/cda/tut/p/id/2983
. I hope this gives you a good start.
Regards,
Vu Doan
Applications Engineer
National Instruments

ATV won't stream my videos

So my aTV connects to my wireless network fine. It plays internet content (YouTube, Trailers, Downloaded iTunes stuff) fine. It cannot however, stream my videos on my computer well. It will take FOREVER to start up, and never really gets to playing it smoothly.
Everything used to work well. I just moved however, so my setup is different. My aTV and wireless router are upstairs in my living room. My computer (and external harddrive) is downstairs in my bedroom. My computer has full signal strength to my wireless network when it is downstairs. Is the problem because the computer and aTV are so far apart? Is there a possible fix other than moving the computer upstairs, which would be very cumbersome?

What is the signal strength like on the tv. I assume it's OK since you can stream trailers.
Even though your mac/pc shows full signal strength it might be receiving interference from another source. What are trailers like on the mac/pc.

K9N Platinum, 7600GTOC, SLI, No Video Signal

Just built up my new system, specs as follows
MSI K9N Platinum
AMD 5200X2 AM2 CPU
2 Gigs Corsair XMS2 DDR800
2 BFG Tech 7600GT OC's in SLI
Thermaltake TR2-500 Watt PSU +12V(1) 14A +12V(2)15A
1 Maxtor 120 GB SATA 150
1 Maxtor 160 GB SATA 160
When i turned the computer on for the first time, the system boots up and there is one small beep, sounds like it is posting, but I get no video signal from my monitor, which I checked on my other computer and is working fine, I tried both video cards in the 1st slot, in non-sli mode and I get the same result each time, so I get no video signal with all ways tried? Do I not have enough power in this PSU to run what I have? The video manufacturer suggests a 450W PSU, which I meet, but do I not have enough juice the 12V rails? And would this cause the no signal? Any help would be much appreciated.

Hello, welcome to forum.
"When i turned the computer on for the first time, the system boots up and there is one small beep, sounds like it is posting, but I get no video signal from my monitor, which I checked on my other computer and is working fine, I tried both video cards in the 1st slot, in non-sli mode and I get the same result each time, so I get no video signal with all ways tried?"
have you tried with one of them only into 1st PCI-E? use 1st DVI output, when using SLI, ensure SLI bridge is configured property, connect monitor to VGA onto 1st PCI-E slot. also check monitor output is configured property(etc: Input 1, Input 2).
power down PC, remove power cord from the PSU and Clear CMOS Guide
re-test.
ensure all power cables are connected property. try to boot with one memory stick only into slot close to CPU socket.
what D-bracket shows?
"Do I not have enough power in this PSU to run what I have? The video manufacturer suggests a 450W PSU, which I meet, but do I not have enough juice the 12V rails? And would this cause the no signal?"
yes, think is too weak for your system
its recommended to get single rail with high amperes on +12V (over 30A)
read here:
PSU's---2 x 12v---The Dual Rail Myth
Is your problem caused by your PSU?
good suggestion can be found here:
https://forum-en.msi.com/index.php?topic=105635.msg783148#msg783148
https://forum-en.msi.com/index.php?topic=103299.msg757739#msg757739

Mid 2011 mbp i7 with a SSD has problems, including grey screen/blue screen/beeping/freezing when I stream live video (i.e. watch espn or time warner cable) Help? Ideas?

Recently my Macbook Pro (June 2011, i7, 8gb RAM, 512gb SSD, AMD Radeon 6750, Mountain Lion - since July - currently 10.8.2) has been presenting me with an array of problems, usually initiated when I am streaming live video. I was streaming Time Warner Cable on 12/9 and it gave me what looked like the blue screen of death. It started up after about five attempts that time. The other day, after about a week of not using the computer, it wouldn't boot past the grey screen. I (option) started it and it gave me two boot choices, the regular HD and a "10.8 restore" option. The HD gave me the grey screen and the restore option gave me the dark blue screen. I reset PRAM and that didn't work. After a force (x) start it worked. Today, I was using "Watch ESPN" and the screen froze and the computer did some kind of repeating RAM beep or something. I rebooted and it started up fine. I'm not watching any videos anymore, but this is a problem since the primary purpose for my mbp is video editing. I'm still under AppleCare but I find more solid answers in the forums or at least better questions for the AppleCare people.
Anybody have similar experiences, or a solid idea of what the heck has happened to my machine?

I'm not really sure what method that person was talking about. I just read he had a successful install so I posted it.
But I'll hazard a guess
1. copy your entire drive to a backup drive
2. boot into that drive and test it out - make sure its a flawless backup, it works, and the hard drive has no problems
3. eject that drive, disconnect it and reboot into the leopard install dvd
4. erase your main hard drive using disc utilities on the leopard install dvd -- you've made a backup, made sure that backup was good, and disconnected it so it's currently safely disconnected from the leopard install you're about to do. Also, on the hard drive you're erasing and installing leopard on to, many people recommend "Zeroing" it as well as erasing it. That option is part of the erase function in disc utilities on the leopard install disc.
5. do a clean install of leopard
6. follow step 4 from that original post exactly as that person described to do.
7. read the rest of what they said
That's pretty much it. With the backup/erase/clean install/import/ you pretty much get everything you need exactly the way you want it with very few things missing -- and you've done this over a clean install. Plus that poster did mention that you can select what you want to import from your backup hard drive.
It sounds like its a "clean install" method that gives you control via "import from machine" option in the installer. Control over what parts of your "old mac" you want to import into your "new leopard mac".
Hopefully that helps. It sounds more involved, but its actually pretty quick and provides you with a perfectly save backup in case anything goes wrong with the leopard install.

Solutions for displaying s-video signal on Macbook Pro? (2006 model)

I looking around for ways to display an s-video signal on my Macbook Pro, but i've no idea the best way to this.
I'm not really after capturing or recording the signal, but I just need a means that I can view the signal, and to be able to switch to another program running on the Macbook. (switch back and forth from Mac app to viewing s-video signal)
Ive seen a few products but they look overblown for what I really need to do like the Elgato video capture, and the xlr8 provideo usb devices.
Is there a way that I could use the DVI socket on the Macbook? I have seem its possible to display the Macbook signal on an external display using this socket, but can it be used to take an input signal?
Message was edited by: jauqq
Technical note of what I exactly need this for: I have an old Roland sampler which can be used with an external monitor to aid in its editing. The outputs on the sampler are s-video and digital RGB. So that I dont have to buy an old bulky monitor I want to use my Macbook display for this while I also am running Logic Pro 8 at the same time. And to switch from Logic, to the displayed signal from the sampler.

The DVI out on your MacBookPro cannot be used for input. In order to see the s-video signal on your MBP display you will need an analog-digital converter like the Canopus ADVC-55, plus you will need to run software. You may be able to use iChat A/V, although I haven't tried it for this purpose. It will cost you more than the Elgato eyeTV device, however.
You will find it much easier & cheaper if you just get an inexpensive LCD display to use with your Roland sampler.

No video signal on projector (Lion, MacBook Pro)

Hi guys
since I've update to Lion (10.7.2), I have problems getting a video signal via mini-DVI / VGA to certain projectors. I'm using a Mac Book Pro (end of 2008). I have never encountered similar problem with previous versions of Mac OS X. Restarting the MacBook or the projector doesn't help. Does anybody have an idea what to do?
Thanx
fweth

I also update to Lion from 10.6.8.. My Dell 3300MP projector worked fine with Snow Leopard. Then with Lion, there is occassionally scrambled signal, but most of the time no signal.. Tried restarting projector, restarting computer, turning mirroring off and then on, but no help. I am running an early 2011 13" MBP.. Really frustrating for someone who does lots of presentations and teaching.

Continous streaming of video signal on to PDA using TCP/IP?

Similar Messages

Maybe you are looking for