// Oprogramowanie Roman Ryltsov
DirectShow streaming and playback in particular offers flexible playback rates for scenarios where playback is requested to take place slower or faster than real time. For a DirectShow developer, the outer interface is pretty straightforward:IMediaPosition::put_Rate takes playback rate and that’s it. Playback rate. Must not be zero. The playback rate is expressed as a ratio of…
DirectShow Spy is introducing integration with GraphStudioNext (and GraphEdit too) to let a developer quickly open a filter graph through Running Object table with external inspection tool. Note that you need a revision 301 GraphStudioNext or later, prebuilt versions available for download here: graphstudionext.exe (Win32), graphstudionext64.exe (x64). DirectShow Filter Graph list window offers context menu items and hotkeys to…
Summary DirectShow Spy receives a set of new powerful updates helping to develop and troubleshoot DirectShow applications: UI combining Markdown formatted filter graph details as well as property pages for all participating filters available interactively via filter graph list available via helper COM class letting DirectShow application integrate incredible troubleshooting capabilities Option to email filter…
One of the recent updates delivered via automatic Windows Update is breaking video decoding for Windows Media Video streams (four character code WMV3). It’s hard to trace things back, however the most likely issue is the update of WMVDECOD.DLL file which is dated 6 May 2013 delivered with MS13-057: Description of the security update for…
A typical task for DirectShow Spy is to get installed onto, make the target application filter graphs available for inspection and… then get inspected with some additional tool. The last step assumes there is an additional application ready to pick the graphs and an interactive user attaches to the graphs for visual inspection and troubleshooting.…
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app prompts to post data back to the website, and the anonymous user accepted the offer and posted the report from this unpublished application), so I have to drop a few lines about the tool.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…
A small issue appears to be affecting DirectShow applications with DirectShow Spy installed. As underlying COM base is non-standard, the spy implements a few hacks to run smoothly and to keep reference counting correct in particular. Under certain conditions, DirectShow-enabled ActiveX control hosted by Internet Explorer seems to be unable to put its graph onto…