get caps returned 
video/x-raw-va, width=(int)640, height=(int)480; video/x-raw-va, width=(int)1280, height=(int)720; video/x-raw-va, width=(int)1280, height=(int)960; video/x-raw-va, width=(int)1920, height=(int)1080; video/x-raw-va, width=(int)2592, height=(int)1944; video/x-raw-rgb, bpp=(int)16, depth=(int)16, red_mask=(int)63488, green_mask=(int)2016, blue_mask=(int)31, endianness=(int)1234, width=(int)640, height=(int)480; video/x-raw-rgb, bpp=(int)32, depth=(int)32, red_mask=(int)255, green_mask=(int)65280, blue_mask=(int)16711680, endianness=(int)4321, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)1280, height=(int)720; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)1280, height=(int)960; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)1920, height=(int)1080; video/x-raw-yuv, format=(fourcc)YUY2, width=(int)2592, height=(int)1944; video/x-raw-yuv, format=(fourcc)Y42B, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)Y42B, width=(int)1280, height=(int)720; video/x-raw-yuv, format=(fourcc)Y42B, width=(int)1280, height=(int)960; video/x-raw-yuv, format=(fourcc)Y42B, width=(int)1920, height=(int)1080; video/x-raw-yuv, format=(fourcc)Y42B, width=(int)2592, height=(int)1944; video/x-raw-yuv, format=(fourcc)I420, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)I420, width=(int)1280, height=(int)720; video/x-raw-yuv, format=(fourcc)I420, width=(int)1280, height=(int)960; video/x-raw-yuv, format=(fourcc)I420, width=(int)1
(./va_gst:835): GStreamer-WARNING **: pad videosrc:src returned caps which are not a real subset of its template caps
920, height=(int)1080; video/x-raw-yuv, format=(fourcc)I420, width=(int)2592, height=(int)1944; video/x-raw-yuv, format=(fourcc)YV12, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)YV12, width=(int)1280, height=(int)720; video/x-raw-yuv, format=(fourcc)YV12, width=(int)1280, height=(int)960; video/x-raw-yuv, format=(fourcc)YV12, width=(int)1920, height=(int)1080; video/x-raw-yuv, format=(fourcc)YV12, width=(int)2592, height=(int)1944; video/x-raw-yuv, format=(fourcc)NV12, width=(int)640, height=(int)480; video/x-raw-yuv, format=(fourcc)NV12, width=(int)1280, height=(int)720; video/x-raw-yuv, format=(fourcc)NV12, width=(int)1280, height=(int)960; video/x-raw-yuv, format=(fourcc)NV12, width=(int)1920, height=(int)1080; video/x-raw-yuv, format=(fourcc)NV12, width=(int)2592, height=(int)1944; image/jpeg, width=(int)640, height=(int)480; image/jpeg, width=(int)1280, height=(int)720; image/jpeg, width=(int)1280, height=(int)960; image/jpeg, width=(int)1920, height=(int)1080; image/jpeg, width=(int)2592, height=(int)1944; video/x-raw-bayer, format=(fourcc)BYR1, bits=(int)10, width=(int)640, height=(int)480; video/x-raw-bayer, format=(fourcc)BYR1, bits=(int)10, width=(int)1280, height=(int)720; video/x-raw-bayer, format=(fourcc)BYR1, bits=(int)10, width=(int)1280, height=(int)960; video/x-raw-bayer, format=(fourcc)BYR1, bits=(int)10, width=(int)1920, height=(int)1080; video/x-raw-bayer, format=(fourcc)BYR1, bits=(int)10, width=(int)2592, height=(int)1944