static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE("sink",
                                                                    GST_PAD_SINK,
                                                                    GST_PAD_ALWAYS,
                                                                    GST_STATIC_CAPS
                                                                    ("video/mpeg, "
                                                                     "mpegversion = (int) { 2,4}, "                                                                     "systemstream = (boolean) FALSE; "
                                                                     "video/x-h264;"
                                                                     "video/x-vc1;"
                                                                     "video/x-vc9,"
                                                                     "wmvversion = (int) { 3}"));

static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE("src",
                                                                   GST_PAD_SRC,
                                                                   GST_PAD_ALWAYS,
                                                                   GST_STATIC_CAPS
                                                                   ("video/x-raw-yuv, "
                                                                    "format = (fourcc) UYVY , "
                                                                    "framerate = (fraction) [ 0, MAX ], "
                                                                    "width = (int) [ 1, MAX ], "
                                                                    "height = (int) [ 1, MAX ];"
                                                                    "video/x-raw-yuv, "
                                                                    "format = (fourcc) YUY2 , "
                                                                    "framerate = (fraction) [ 0, MAX ], "
                                                                    "width = (int) [ 1, MAX ], "
                                                                    "height = (int) [ 1, MAX ];"
                                                                    "video/x-raw-yuv, "
                                                                    "format = (fourcc) YVYU , "
                                                                    "framerate = (fraction) [ 0, MAX ], "
                                                                    "width = (int) [ 1, MAX ], "
                                                                    "height = (int) [ 1, MAX ]"));