directshow | 易学教程

How to use/install custom Directshow filter

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问题 I have custom compiled directshow filter - filter.DLL - but how to use, or install this filter in system? 回答1: Usually you register the directshow filter into system by calling (from an elevated command prompt window on windows vista/7) regsvr32 filter.dll . After the registration process you can use your filter with a directshow graph viewing application: GraphEdit (graphedt.exe), installed by Windows SDK (ex. "c:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\graphedt.exe" ) GraphStudio

QT5 Video render error code 80040218

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问题 When running an application in QT5 made using the QWebView , I accessed a page with a video player in HTML5 , but the video does not play and qt/directshow shows the following error: DirectShowPlayerService::doRender: Unresolved error code 80040218 DirectShowPlayerService::doRender: Unresolved error code 80040218 Details: QT5.1.1 MingW4.8 32bit Windows 7 64bit I suspect that is why my Windows is 64bit , but the QT/MingW * runs on 32bit and maybe miss some DLL/LIB . How can I resolve this?

GMFBridge usage in DirectShow

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问题 enter code here I have to stop and start Video Renderer Filter dynamically . That is not possible with "normal" Direct Show Architecture without creating new graph. But with GMFBridge it seems it is possible. But i can not figure out how to use it.( yes i read the paper at http://www.gdcl.co.uk/gmfbridge/index.htm ) My Graph is: SourceFilter ---> MyCustomTransformFilter ---> Video Rendrer Filter So GMFBridge fits where? i) I can devide my graph two pieces [ Source Filter + MyCustomFilter ] +

Can't make IAMStreamConfig.SetFormat() to work with LifeCam Studio

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问题 I'm brand new to DirectShow and am working on adding a video stream to my application. I've looked into many solutions out there (TouchLess, DirectShow.net, etc.) and ended up going with this small project on Code Project There isn't much to it, which is why I selected it; I wanted a small code base to work with, as I need to get this feature implemented quickly. After a solid day of reading, experimenting and debugging I finally have everything working nicely. There is a delay which is a

Where can I find a thorough DirectShow tutorial?

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问题 I've read through the MSDN documentation on DirectShow and it's still confusing. I feel like I need more context for what the objects are: Graphs, Pins, Filters...etc. A Google search doesn't give me much to work with. What do I need to grok DirectShow? EDIT: The wikipedia page on DirectShow does a pretty good job. 回答1: MSDN Magazine has a nice article in their July 2002 Issue: DirectShow: Core Media Technology in Windows XP Empowers You to Create Custom Audio/Video Processing Components

“Fake” DirectShow video capture device

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问题 This is tangential to the last few questions I've asked. I need to get video from an IP webcam (SNC-RZ25N) to Flash Media Server. I'd rather not have to use Windows, but if it makes things easier, I will. (Flash Media Live Encoder is a Windows only program.) I've considered many different routes from point A to point B, but it seems like the easiest might be to just use Flash Media Live Encoder to publish to Flash Media Server. Then the only gap I have to bridge is getting a video source

DirectShow Source filter using Dekstop window as source

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问题 I am looking for examples of a DirectShow Source filter that would display a Desktop Window. I am sure there should be examples, but I haven't yet found them. Perhaps I am using the wrong terminology. This is for grabbing live output of a Window, and processing that has video. Lee 回答1: In DirectShow SDK there is a sample filter called PushSource and inside there is PushSourceDesktop. Compile it, register ("regsvr32 PushSource.ax") and insert into your graph as a source filter. 回答2: here's a

Getting DirectShow Samples on Windows 8

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问题 I want to create a Virtual Webcam for Windows 8 and I have two choices: DirectShow or Microsoft Media Foundation. After some looking around I found out that DirectShow has much more exmples and even here on Stackoverflow it gets recommended over MMF. So I want to get started with some examples and for this I need strmbase.dll, which I need to compile myself from the BaseClass sample of the DirectShow samples. But getting the samples seems freaking impossible on Windows 8. According to this

How can I create a video from a directory of images in C#?

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问题 I have a directory of bitmaps that are all of the same dimension. I would like to convert these bitmaps into a video file. I don't care if the video file (codec) is wmv or avi. My only requirement is that I specify the frame rate. This does not need to be cross platform, Windows (Vista and XP) only. I have read a few things about using the Windows Media SDK or DirectShow, but none of them are that explicit about providing code samples. Could anyone provide some insight, or some valuable

Virtual webcam input as byte stream

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I dont have webcam. And I want to implement virtual webcam (or fake device driver may be) that would work as normal webcam( virtual webcam ) and takes memory stream or bytes as input. How can I develop this? Can DirectShow be helpful in this? I dont know anything. Please help i have found that there are many software that takes video file as input but I want to have byte stream as input. Roman R. Here you go: DirectShow Source filter using Dekstop window as source Writing a Direct Show Source Filter Way to generate video from a bunch of images? Writing a virtual webcam? Virtual Webcam in C++