// Oprogramowanie Roman Ryltsov
Unfortunately, AMAP_3D_TARGET appears to be useless. Internally, surface allocation comes up with the following capabilities for the surface: DDSCAPS_VIDEOMEMORY | DDSCAPS_LOCALVIDMEM | DDSCAPS_OFFSCREENPLAIN | DDSCAPS_3DDEVICE. Sadly, DirectDraw responds (might respond?) with E_NOTIMPL. While one can advance one step further by removing DDSCAPS_VIDEOMEMORY | DDSCAPS_LOCALVIDMEM, another problem is hit that you are no longer able to…
It is really great news that Windows 7 offers quite some goodies for MPEG-4 support right out of the box, but some things appear to be made not so accurate. The component responsible for video decoding is Microsoft DTV-DVD Video Decoder (also known as Microsoft MPEG-2 Video Decoder), available with DirectShow interface. It offers video…
Crime An application which builds a DirectShow graph unexpectedly started failing with VFW_E_NOT_CONNECTED (0x80040209) error code. Scene The problem takes place during DirectShow graph building, yet in stopped state. Specific call which appeared to be giving out the error in first place appears to be EVR input pin’s IPin::ConnectionMediaType, and the problem is also specific…
A customer complained on video playback problems which had symptoms of software compatibility issue. At certain operation modes software froze leaving the only option to kill process and restart. I appeared that the system has a third party DLL installed, a new hero name’s – picapmk4.dll. The DLL registers itself as Video for Windows codec…
Recent IP Video Source class/module is not limited to use via registration as a video input/capture/source device. The filter is also registered as a regular filter and can be used programmatically in a regular way: CoCreateInstance, AddFilter etc. A C++ code snippet below shows how to import interface definition, create an instance of the filter,…
Two widely popular applications, which use DirectShow API appeared to be locked in a combat: Google video chat is installing a plugin which registers artificial video capture sources “Google Camera Adapter 0” and “Google Camera Adapter 1”. As the application does not announce any integration capabilities and is only using video for internal purposes for…
This does not update the software with new features, but there are a few simple things worth mentioning explicitly. The first is that virtual DirectShow camera device can be set up with both M-JPEG and JPEG URLs. That is, IP cameras which do not implement M-JPEG, or implement it in a buggy way (there is…