// Oprogramowanie Roman Ryltsov
Video related stuff
With all respect to Blackmagic Design products, there are bugs so painfully hard to identify. Capture board driver has specific requirements as for buffers allocated for captured video frames. The parameters of memory allocator in used are going in ALLOCATOR_PROPERTIES structure. typedef struct _AllocatorProperties { long cBuffers; // 30 long cbBuffer; long cbAlign; // 16…
As a part of American Kestrel Partnership project, Peregrine Fund put live cameras online to broadcast interior and exterior views of American Kestrel nest boxes in their campus in Boise, Idaho. One of the nestboxes is not only populated, four eggs have been laid recently and hatching is expected soon. The live picture is made…
Direct3D based DirectShow video renderers – Video Mixing Renderer 9 and Enhanced Video Renderer – have been notoriously known for consuming resources in a way that you can run at most X simultaneously. There has been no comment published on the topic and questions (e.g. like this: How many VMR 9 can a PC support…
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…
According to CSI: Crime Scene Investigation, Season 06 Episode 13 (17:04), investigators are using snake scope camera with DirectShow AMCAP tool to present the captured image:
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…