I need to stream video from DVBViewer's Netstreamer plugin, and capturing its onscreen video output is too laggy.
Is there any virtual webcam software that accepts HTTP Live Streams as a video source?
If you are on linux you could just use v4l2loopback with mplayer.
MPlayer is able to play any webstreams, all kind of video files and so on. I just tested it with a file from http://www.tagesschau.de which is a german news site.