// Oprogramowanie Roman Ryltsov
It looks confusing that IMFSourceReader interface does not offer a dedicated method to find out the number of streams behind it. There is a IMFMediaSource instance behind the reader, and its streams are available through IMFMediaSource::CreatePresentationDescriptor method and IMFPresentationDescriptor::GetStreamDescriptorCount method call. I am under impression that source reader’s method just has to be there even…
As new and new people discover the Windows 10 Anniversary Update breaking changes (expectedly running mad), let’s reiterate the possible solutions: You don’t like the idea that video sharing service adds latency, and adds man-in-the-middle access/spying over a video feed. See #6 below. You are consuming raw video from camera using one of the uncompressed…
There is so little information about this problem (not really a bug, rather a miscalculation) out there because it is coming up with customized Video Mixing Renderer Filter 7 and there is no problem with straightforward use. In windowless mode the renderer is accepting media samples and displays them as configured. IVMRWindowlessControl::GetCurrentImage method is available…
A StackOverflow question (already deleted) asked about use of indices when referencing Video for Windows (VFW) capture devices such as in capGetDriverDescription API and other. Video capture with Video for Windows allowed use of up to 10 devices (did anyone have that many at that time?). The numbering was API specific and at the latest…
Microsoft’s James Daily wrote back in 2011 (and it’s an incredible response in the public forum from MS guy – provided that DirectShow branch of the same forum did not see anything close for 10+ years) about how technologies relate one to another: Hey, I’m the team’s DShow expert. Trevor asked me to take a…
Use of separated certificate and private key might be confusing without understanding how parts or CryptoAPI are related one to another. Apparently, CryptSignMessage and friends require private key in order to create a digital signature. It is not a problem when private key resides right in the signing certificate (such as, for example, imported with…
(this is a re-post from StackOverflow) Virtual webcam is typically a software only implementation that application discover as if it is a device with physical representation. The mentioned applications use APIs to work with web cameras and ability to extend the APIs and add your own video source is the way to create a virtual…