// Oprogramowanie Roman Ryltsov
Over 20+ years there have been a steady flow of questions “how to build these projects”. Back in time the problem was more about having exactly matching settings in the application/library projects and mandatory dependent static library. At some point Microsoft abandoned the samples, then removed from the SDK completely. Luckily, some point the samples…
DirectShow Video Mixing Renderer (VMR-7) filter exhibits a (regression?) bug in Windows 10 systems. When aspect ratio preservation is enabled in VMR_ARMODE_LETTER_BOX mode, which makes overall sense as default mode quote so often, the letterboxing does not work as expected. The problem is easy to reproduce with a well known DShowPlayerSDK sample application, with an…
I am reposting a Q+A from elsewhere on injecting raw audio data obtained externally into Windows API media pipeline (in Russian). Q: … какой Ñамый проÑтой ÑпоÑоб превратить порции байтов в формате PCM в Ñжатый формат, например WMA иÑÐ¿Ð¾Ð»ÑŒÐ·ÑƒÑ Ñ‚Ð¾Ð»ÑŒÐºÐ¾ ÑредÑтва Windows SDK? […] Ñ Ñ‚Ð°Ðº понÑл, что без напиÑÐ°Ð½Ð¸Ñ Ñвоего фильтра DirectShow (DS) –…
A few years ago the question was already asked: DirectShow Spy: Who Sent EC_ERRORABORT?. The spy already attempted to log a call stack in order to identify the sender of the message. However overtime the tracing capability stopped functioning. There were a few reasons and limitations of internal stack unwinder specifically resulted in inability to…
Recent submissions of DirectShow and Media Foundation capture capabilities brought references to new interesting hardware. 1. Magewell USB Capture HDMI Gen 2 AKA XI100DUSB-HDMI — USB\VID_2935&PID_0001 Reports ability to capture up to 1920×1080 video at 60 frames per second in YUY2 and RGB pixel formats. XI100DUSB-HDMI Video Media Types (Windows 10; 10.0.15063) XI100DUSB-HDMI Video Media…
Virtual DirectShow sources have been a long time synonym of software-only camera implementation exposed to applications along with physical cameras in a way that applications consume the sources without making a difference whether the camera is real or virtual. Vivek’s template was a starting point for many: Capture Source Filter filter (version 0.1) 86 KB…
False assertion failure in DirectShow BaseClasses transip.cpp, in CTransInPlaceFilter::Copy: ASSERT(lDestSize >= lSourceSize && lDestSize >= lDataLength); […] CopyMemory((PVOID) pDestBuffer, (PVOID) pSourceBuffer, lDataLength); The code asserts on “lDestSize >= lSourceSize” which is true in most cases, but it does not have or need to be true. The code below copies just lDataLength bytes and assertion on…