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 [...]
Archive for the ‘Video’ Category
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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Bringing virtual DirectShow devices back to life with Skype 6
Posted: 28th November 2012 by Roman in Technology, VideoTags: bug, devicepath, DirectShow, skype
As mentioned before, new Skype 6 broke compatibility with all virtual DirectShow devices out there. Just oops, nothing works any longer if only it is not a full driver exposing virtual device through WDM. Since quite some people are interested in details (Skype 6 Virtual Camera issues, Skype Client for Windows – SCW-3881 – Virtual [...]
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:
libx264 illustrated
Posted: 30th September 2012 by Roman in VideoTags: DirectShow, DMO, encoding, H.264, libx264, performance, x264
As libx264 has so many presets and tunes, I was curious how they all related one to another when it comes to encode video info H.264. I was more interested in single pass encoding for live video, so the measurements are respectively for this mode of operation with encoder running in CRF (constant rate factor, [...]
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 [...]
American Kestrel Partnership — The Peregrine Fund
Posted: 24th April 2012 by Roman in Technology, VideoTags: ip video source, kestrel, live, nestbox, online, ustream, Video
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 [...]