func sample_chromakey(vsw *libvsw.Vsw) { wait := 8000 vsw.CutSub(0) vsw.Cut(1) // You have to insert a writable SD card to LiveWedge. vsw.UploadFile("greenback.jpg") vsw.SetChromaKey(libvsw.CHROMA_KEY_GREEN) vsw.CutSub(4) time.Sleep(time.Duration(wait) * time.Millisecond) vsw.CutSub(0) vsw.UploadFile("blueback.jpg") vsw.SetChromaKey(libvsw.CHROMA_KEY_BLUE) vsw.MixSub(2000, 4) time.Sleep(time.Duration(wait) * time.Millisecond) vsw.MixSub(2000, 0) vsw.UploadFile("purpleback.jpg") vsw.SetChromaKey(libvsw.CHROMA_KEY_PURPLE) vsw.CutSub(4) time.Sleep(time.Duration(wait) * time.Millisecond) vsw.CutSub(0) vsw.UploadFile("redback.jpg") vsw.SetChromaKey(libvsw.CHROMA_KEY_RED) vsw.MixSub(2000, 4) time.Sleep(time.Duration(wait) * time.Millisecond) vsw.MixSub(2000, 0) }