VisioForge
ActiveX control for video capturing.
SDK allows to create virtual camera device.
FFMPEG Source DirectShow filter.
Delphi control for video and DVD playback.
DirectShow filter to capture video from IP cams by RTSP/RTMP/HTTP.
WinRT multimedia framework.
MP4 H264 / AAC DirectShow encoders.
Read / generate barcodes on .Net.