GDCL (Geraint Davies Consulting Ltd) is a small consulting firm based in North Wales specializing in custom software development.

We develop and advise on software for digital video and audio processing, on Windows, OS X, iOS and other platforms. Recent projects have included work on DirectShow, Media Foundation, Mac OS X, iOS, Android and embedded systems.

GDCL’s technology pages contain a substantial body of freely-reusable tools. The articles page contains papers and source code discussing advanced programming topics related to DirectShow, AV Foundation and other areas. It currently includes source code to several sample iPhone apps, a multiple-graph toolkit and working demultiplexor filters for mpeg-1 and MP4.

Geraint Davies was the original designer of the DirectShow technology, and has been developing systems-level software since 1976.

Recent Updates

22 Apr 2014
Frame Re-ordering Support in iOS Video Encoding
21 Jan 2014
Video Encoding on iOS 7
12 Nov 2013
DirectShow RTSP filter and Port Settings
29 Sep 2013
Decline and Competition
16 May 2013
DirectShow RTSP Server filter and RTSP Jukebox