// Software Production Line
The previous post was focusing on problems with the hardware MFT decoder provided as a part of video driver package. This time I am going to mention some data about how the inefficiency affects performance of video capture using a high frame rate 260 FPS camera as a test stand. Apparently the effect is better…
Video GPU vendors (AMD, Intel, NVIDIA) ship their hardware with drivers, which in turn provide hardware-assisted decoder for JPEG (also known as MJPG and MJPEG. and Motion JPEG) video in form-factor of a Media Foundation Transform (MFT). JPEG is not included in DirectX Video Acceleration (DXVA) 2.0 specification, however hardware carries implementation for the decoder.…
There is a number of systems out there equipped with multiple GPUs which work cooperatively. The technology itself started from Integrated graphics processing units which brought a “free” GPU into system. Such system equipped with an additional discrete card obtained two GPUs at a time and from certain point it was a challenge to not…
Yesterday I wrote about the NVIDIA Optimus problem with DXGI where Output Protection Manager API reported Intel certificate for NVIDIA DXGI adapter. AMD hybrid graphics known as “PowerXpress” (and most recently as “Enduro”) exhibits the same behavior: Adapters AMD Radeon HD 8850M Intel(R) HD Graphics Family Adapter: AMD Radeon HD 8850M Vendor Identifier: 0x1002 […]…
I added a section that enumerates DXGI adapters with the help IDXGIFactory6::EnumAdapterByGpuPreference – this is included into the produced output. Unfortunately the method does not distinguish between dual GPU systems, such as with discrete GPU and additional CPU integrated Intel GPU… DXGI Capabilities NOTE: Baseline capabilities are corresponding to DXGI 1.1 Windowed Stereo: 0 DXGI_FEATURE_PRESENT_ALLOW_TEARING:…
Bits of Rainway Pulsar technology at work in this test run. The big monitor is a part of desktop system, by the way, not a high end one: Radeon RX 570 with two monitors, one of which is encoded into H.264 and streamed over network to two pieces of hardware: Intel NUC with a 2K…
An interesting Media Foundation question on StackOverflow: Weird connection between CoInitializeSecurity() and Media Foundation Encoders A developer has reasons to discard standard COM security and go RPC_C_IMP_LEVEL_ANONYMOUS. Surprisingly this has effect on Windows Media Foundation API in the part of available codecs (Media Foundation Transforms). Sample code: CoInitializeSecurity line in the code above removes the…