The second videotestsrc chain might produce YUY2 because everything is
accepted downstream before the first shapewipe chain gets negotiated.
pipeline_string =
g_strdup_printf
- ("videotestsrc ! video/x-raw-yuv,width=640,height=480 ! shapewipe name=shape border=0.05 ! videomixer name=mixer ! ffmpegcolorspace ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! ffmpegcolorspace ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw-yuv,width=640,height=480 ! queue ! mixer.",
+ ("videotestsrc ! video/x-raw-yuv,format=(fourcc)AYUV,width=640,height=480 ! shapewipe name=shape border=0.05 ! videomixer name=mixer ! ffmpegcolorspace ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! ffmpegcolorspace ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw-yuv,format=(fourcc)AYUV,width=640,height=480 ! queue ! mixer.",
argv[1]);
pipeline = gst_parse_launch (pipeline_string, NULL);