Mark Salsbery wrote:

What do you mean? Do you need to support OS versions older than XP?

Application needs to be developed only for Win XP variants and not targeting any other versions of Windows. Platform is as specified below: platform: C#.NET, Visual Studio 2005, .Net Framework 2.0, WinXP Prof. SP2 on Pentium Dual Core 3GHz PC with Intel on-board graphics accelerator.(graphics card can be considered for DirectX) I will see if there is a Managed way (XNA, Managed DirectX) since that (managed code) will be better for the .NET application we are developing. Need to check if XNA can be used for DirectShow 9 (i guess not).

Mark Salsbery wrote:

Yes. Whether it does what you need it to do or not, I don't know. I do know Wikipedia isn't the ultimate source of info on DirectShow.

Thanks for your recommendation. application needs basic drawing on the live video display. thanks for the msdn link, how could'nt i get that link :( need to check. will convey the status... meanwhile (if there is a need for a good text) could you suggest a good one for DirectShow 9

@ Mark Salsbery - Thanks for your reply.

Mark Salsbery wrote:

DirectShow has taken care of a LOT of the render/capture work

provided DirectShow is well documented/supported on MSDN or elsewhere; can DirectShow help in drawing graphics over the video (live video from camera)? As these lines from Wikipedia Article http://en.wikipedia.org/wiki/DirectShow[^] imply it does'nt - "Windows XP introduced a new filter called the Video Mixing Renderer 7 (VMR-7 or sometimes just referred to as VMR). The number 7 was because VMR-7 only used DirectDraw version 7 to render the video and did not have the option to use GDI drawing. The main new feature of VMR-7 was the ability to mix multiple streams and graphics, allowing applications to draw text and graphics over the video " due to WinXP OS constraint, Thus I selected Direct3D (DirectX 9) over previous DirectDraw and DirectShow. (added to it the complexity of DirectX and the simplicity of me as a beginner in this field :), i would really prefer the Managed DirectX or XNA as these API's provide simplified access through .NET. keeping in mind that my current application is a machine vision application which only demands simple video capture display and capturing single frames for Image Processing. For DirectX, web is full with help/guidance for game development and no such serious help is available for unique applications such as this one. Thread like this is pretty much needed for such type of applications which will then prosper on DirectX technology. On behalf of many I have just started the thread. I request everyone to take a note of this and contribute to this thread by answering the questions raised here and similarly wherever. Thanks. any help/guidance/feedback will really be appreciated Question: How To use DirectX 9.0 For Machine Vision Application: How to use DirectX 9.0 API's in - 1. Live video: display live video from digital camera / (analog camera + framegrabber card). 2. Overlay: displaying informative data over(on top of) the video (i guess this is what they call Overlay) 3. Capture Frame : capturing Current frame(image) for Image processing platform: C#.NET, Visualt Studio 2005, .Net Framework 2.0, WinXP Prof. SP2 on Pentium Dual Core 3GHz PC with Intel

Hi I am developing an application where i want to display live video and also do some image processing. I tried: 1. Video for Windows API : easy but not quite comprehensive and not able to use overlay 2. 3rd Party SDK: nice quality still no overlay support, no single frame capture fn.! 3. GDI+ is an option but not quite preferable for fast video display and capture where I think DirectX goes well. Thus selected latest DirectX v9 which is latest for WinXP. 4. searched for DirecX but got DirectShow links which is deprecated in DirectX 9. also could not find suitable code for capturing single frame. I've been searching for quite a while now. searched through CodeProject, MSDN, Google; but could not get exactly what i wanted. :doh: Thus can you guide/suggest in the following area: How to easily use DirectX 9.0 for displaying video from devices and capturing frames I want to achieve this with very simple ( minimalistic) coding as i am beginner in this area and would not like to indulge with the complexity of DirectX (one of the most complex API's by Microsoft) for that purpose please suggest how to use Windows Media Player SDK or Windows SDX. How to use DirectX 9.0 API's in - 1. Live video: display live video from digital camera / (analog camera + framegrabber card). 2. Overlay: displaying informative data over(on top of) the video (i guess this is what they call Overlay) 3. Capture Frame : capturing Current frame(image) for Image processing platform: C#.NET, Visual Studio 2005, .Net Framework 2.0, WinXP Prof. SP2 on Pentium Core 2 duo 2GHz , 1GB Ram PC with Intel onboard graphics accelerator. any help/suggestion or links highly appreciated ... thanks.