Solved

Video capture and streaming from Webcam

Posted on 2002-06-07
7
1,295 Views
Last Modified: 2013-11-13
I'm currently trying to write a piece of software that will capture video from a webcam, and stream this over a LAN to other computers on the network.

So far, I've managed to write code that will capture an AVI file, and code that will send this AVI to any other machine that requests it. However, I need to take this a step further and make this a real time process, letting other users on the LAN watch the video live, as it happens.

After a little research, it seems that I must capture the AVI to memory, rather than to a file. The OCX I was using doesn't support this, so I feel like I'm back to square one. Thus the first part of my question, can anyone recommend an OCX that will let me save the file to ram instead?

Now, when it comes to streaming, I know little more than it's usually (or possibly always?) done with the UDP protocol. Again, this shouldn't prove to be a problem, since I'm quite comfortable with the use of the winsock control for TCP and UDP communication.

However, I still need to figure out:

1) How to capture the AVI to RAM
2) How to prepare this stream / retreive the data to be sent via the winsock control

Full points will be given to anyone who can offer me relative code, otherwise I will drop the points available and allocate them to anyone who can point me to another site with references to this subject that prove useful in the final solution.

Thanks in advance,

Stephen Sherlock
0
Comment
Question by:stesherlock
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 4

Expert Comment

by:mcoop
ID: 7064157
Have a look at the Windows Media packes on the MS sites.

Windows Media Encoder is free to download, and works very well.  I have many servers spread across the country streaming 28kbps HTTP programs 24x7x365

If you can't get WME to recognise your Webcam drivers, you may be better off getting a low cost compatible encoder card (many listed on WME site) and going that way.  The quality and reliability will be well worth the difference.

Cheers
0
 

Author Comment

by:stesherlock
ID: 7064620
I'm afraid neither of those suggestions appear to acheive my desired result.

I need to be able to code this feature into an existing project to provide additional functionality, so the MS WME is out of the question (unless I've overlooked something on the site? Some more accurate links would be appreciated if this is the case).

The second method seems to only capture shots at certain intervals, which is again not really what I'm looking for since the video will ideally be real time, around the 15-25 FPS mark.

Thanks for trying.
0
What Is Transaction Monitoring and who needs it?

Synthetic Transaction Monitoring that you need for the day to day, which ensures your business website keeps running optimally, and that there is no downtime to impact your customer experience.

 

Author Comment

by:stesherlock
ID: 7066022
I may be wrong, but I've just downloaded the DirectX SDK again, and this DirectShow side of things seems to look promising.

Has anyone had any expereience with DirectShow from VB? Any relevant code would be greatly appreciated.
0
 

Author Comment

by:stesherlock
ID: 7068555
Since I believe the way to go with this is now to use DirectShow, I'm going to delete this question and post another with a different "topic" that may promote more interest.

Thanks.
0
 
LVL 1

Accepted Solution

by:
Un1 earned 250 total points
ID: 7145138
Did you try the AVPhone controls?

http://www.banasoft.net/AVPhone.htm
0
 

Author Comment

by:stesherlock
ID: 7146798
Well, since it was the AV Phone control that I ended up using (and forgot about this question in the process :() I'll give the points to UN1 for being the first to suggest it...
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to remove superseded packages in windows w60 or w61 installation media (.wim) or online system to prevent unnecessary space. w60 means Windows Vista or Windows Server 2008. w61 means Windows 7 or Windows Server 2008 R2. There are various …
If you haven’t already, I encourage you to read the first article (http://www.experts-exchange.com/articles/18680/An-Introduction-to-R-Programming-and-R-Studio.html) in my series to gain a basic foundation of R and R Studio.  You will also find the …
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question