[Example] fix nego failure case

1. add videoscale to set 640x480 video frame
2. use the framerate of webcam

Signed-off-by: Jaeyun Jung <jy1210.jung@samsung.com>

diff --git a/nnstreamer_example/example_filter/nnstreamer_example_filter.c b/nnstreamer_example/example_filter/nnstreamer_example_filter.c
index 108b55a..64d3ff3 100644 (file)
--- a/nnstreamer_example/example_filter/nnstreamer_example_filter.c
+++ b/nnstreamer_example/example_filter/nnstreamer_example_filter.c
@@ -440,8 +440,8 @@ main (int argc, char **argv)
   /** init pipeline */
   str_pipeline =
       g_strdup_printf
-      ("v4l2src name=cam_src ! videoconvert ! "
-      "video/x-raw,width=640,height=480,format=RGB,framerate=30/1 ! tee name=t_raw "
+      ("v4l2src name=cam_src ! videoscale ! "
+      "video/x-raw,width=640,height=480,format=RGB ! tee name=t_raw "
       "t_raw. ! queue ! textoverlay name=tensor_res font-desc=\"Sans, 24\" ! "
       "videoconvert ! ximagesink name=img_tensor "
       "t_raw. ! queue ! videoscale ! video/x-raw,width=%d,height=%d ! tensor_converter ! "