Skype

It seems that many people use v4l2loopback with skype. now skype has (or had) a somewhat broken v4l2-implementation, which unfortunately made it sometimes a bit quirky, to use it with a v4l2loopback device.

luckily, it seems that things have improved since i last checked, and when i tried it today (using "skype-4.0.0.8" for Debian/32bit) it worked out-of the box using a video-signal i produced with gstreamer:

gst-launch videotestsrc ! ffmpegcolorspace ! "video/x-raw-yuv,format=(fourcc)YUY2" ! v4l2sink device=/dev/video1

dev/video1 is my v4l2loopback device, and i'm only using a test-video here.

people found that forcing the colorspace to "YUV2" is important if you want skype to be able to read the video. for an explanation check the Colorspace Issues page.