The tool provides a user- (well, actually a developer-) friendly printout of capabilities accessible via Blackmagic Design DeckLink SDK for DeckLink series of hardware. This covers features of DeckLink and Intensity series of hardware for video/audio capture, accessible via vendor’s SDK. The data is printed out in Markdown format, easy to read on its own [...]
Posts Tagged ‘Video’
DeckLinkCapabilities: A Printout of Capabilities of Blackmagic Design/DeckLink Hardware
Posted: 12th May 2013 by Roman in Utilities, VideoTags: blackmagic, capture, decklink, tool, utility, Video
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CaptureClock: Utility to Check Video/Audio Capture Rates
Posted: 4th January 2013 by Roman in ATL, Utilities, WTLTags: Audio, capture, DirectShow, frame rate, live, rate matching, Video
Someone discovered the utility while browsing my public repository (the app prompts to post data back to the website, and the anonymous user accepted the offer and posted the report from this unpublished application), so I have to drop a few lines about the tool. The idea is basically straightforward: live capture involves attaching time [...]
Skype 6.0.0.126: improved support for video devices for richer user experience
Posted: 17th November 2012 by Roman in UtilitiesTags: DirectShow, ip video source, skype, Video
A new release of Skype is out there, version 6.0.0.126: Metro look on the main (roster) window – good job! Broken compatibility with software (virtual) video capture devices – good job! Broken compatibility with some of hardware capture devices – good job! While stripping virtual video devices in favor of true cameras, to avoid issues, [...]
IP Video Source: Support for HTTPS protocol
Posted: 22nd October 2012 by Roman in Utilities, VideoTags: camera, DirectShow, HTTPS, ip, ipvideosource, JPEG, M-JPEG, Video, virtual
This publishes a small update to IP Video Source tool to expose M-JPEG/JPEG video streams as DriectShow video devices. The utility now accepts https:// URL scheme and pulls video over secure connections. Not every camera has support for HTTPS, however many do including those from UDP Technology, Axis etc. The update also includes other minor [...]
libx264 – dependency of encoding time on requested quality
Posted: 1st October 2012 by Roman in Technology, VideoTags: encoding, H.264, libx264, quality, Video, x264
More charts on libx264. Is it true to assume that it takes longer to encoder higher quality (lower rate factor in CRF mode) content? The figures answer that yes, indeed:
Using Vista Video Resizer DSP in DirectShow, via DMO Wrapper Filter
Posted: 4th August 2012 by Roman in ATL, SourceTags: DirectShow, DMO, dsp, resizer, Video
Windows Vista introduced helpful video and audio Digital Signal Processors (DSPs) in DMO form-factor, which however do not work smoothly with DMO Wrapper Filter and thus cannot be directly used in DirectShow. There perhaps was no intent in first place to extend DirectShow functionality with these new components, and no effort was put into providing [...]
Memory Allocators with Blackmagic DeckLink video capture hardware
Posted: 7th July 2012 by Roman in Technology, VideoTags: blackmagic, capture, decklink, DirectShow, memory allocator, Video
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 [...]