Microsoft Windows Visual PC implements virtual machines and the application holds the entire machine state and virtual hard disk information in files. In a few large files in fact, so a question to move and/or backup the files is a question of periodic interest. So what are the files it is using? First of all, [...]
Posts Tagged ‘howto’
Windows Visual PC files and locations
Posted: 14th March 2010 by Roman in TechnologyTags: .vhd, .vmc, .vmcx, .vud, howto, tip, virtual pc
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MediaTools: How to manually configure filters to render M-JPEG video stream from an IP camera
Posted: 5th August 2009 by Roman in Media Tools, Technology, VideoTags: camera, DirectShow, howto, JPEG, M-JPEG, mediatools, sample, Video
Media Tools DirectShow Filters can be used to acquire, parse and decoder M-JPEG encoded video stream from an IP camera or a video server, however for a quick start it is necessary to properly register filters on system and create a DirectShow graph. To register the filters, it is necessary to download DLLs from repository. [...]
How To: Save image to BMP file from IBasicVideo or VMR windowless interface
Posted: 24th August 2008 by Roman in ATL, VideoTags: ATL, bmp, C++, howto, image, Video, VMR
A simple question being asked all over again. Given IBasicVideo, IBasicVideo2, IVMRWindowlessControl or IVMRWindowlessControl9, how to save image to file? It is easy. It is a bit easier with IBasicVideo because it is possible to query this interface directly from graph’s interface, such as IGraphBuilder, and the call will be forwarded to video renderer. This [...]
How To: Dump CAtlRegExp regular expression variable on parse error
Posted: 23rd August 2008 by Roman in ATLTags: ATL, howto, regexp, regular expressions
ATL regular expression code adds dump/debug capabilities with ATL_REGEXP_DUMP preprocessor definition defined (undocumented). Dump output is directed to stdout, so if the application is not console, it has to be redirected in advance, e.g. into a $(BinaryPath)$(BinaryName)-atlrx.h file. CAtlRegExp<> Expression; LPCTSTR pszPattern; BOOL bCaseSensitive; #if defined(ATL_REGEXP_DUMP) REParseError Error = Expression.Parse(pszPattern, bCaseSensitive); if(Error != REPARSE_ERROR_OK) { [...]
How To: Dump DirectShow media samples
Posted: 22nd August 2008 by Roman in ATL, Seriously, Source, Utilities, VideoTags: ATL, DirectShow, howto
Given a DirectShow filter graph, what media samples are being sent through particular graph point? DumpMediaSamples utility gives a fast answer to this question. It prints out connection media type details (with details of VIDEOINFOHEADER, VIDEOINFOHEADER2 and WAVEFORMATEX structures corresponding to FORMAT_VideoInfo, FORMAT_VideoInfo2 and FORMAT_WaveFormatEx format types) and IMediaSample details obtained through AM_SAMPLE2_PROPERTIES structure. First [...]
How To: Implement DirectShow Filter using DirectX Media Object DMO (Part 5: In-Place Processing)
Posted: 26th July 2008 by Roman in ATL, Source, Video, WTLTags: ATL, DirectShow, DMO, howto, WTL
Previously on the topic: Part 1: Starting the Project Part 2: Video Processing Part 3: Persistence, Automation and Property Pages Part 4: Merit Due to the nature of the brightness and constract correction processing, it would make sense to combine and simplify processing to apply correction “in-place”, that is without copying data from input to [...]
How To: Implement DirectShow Filter using DirectX Media Object DMO (Part 4: Merit)
Posted: 26th July 2008 by Roman in ATL, Source, Video, WTLTags: ATL, DirectShow, DMO, howto, merit, WTL
Previously on the topic: Part 1: Starting the Project Part 2: Video Processing Part 3: Persistence, Automation and Property Pages The implemented so far filter/DMO shown a problem related to its unexpectedly high “importance” in the system with the symptom of “auto-insertion” the filter when it is not necessary. For example, let us render an [...]