fix video input in cpp infer on NX (#4340)

deploy/cpp/scripts/build.sh

@@ -51,11 +51,11 @@ then
   echo "set OPENCV_DIR for aarch64"
   # TX2平台通过以下命令下载预编译的opencv
   mkdir -p $(pwd)/deps && cd $(pwd)/deps
-  wget -c https://paddlemodels.bj.bcebos.com/TX2_JetPack4.3_opencv_3.4.10_gcc7.5.0.zip
-  unzip TX2_JetPack4.3_opencv_3.4.10_gcc7.5.0.zip && cd ..
+  wget -c https://bj.bcebos.com/v1/paddledet/data/TX2_JetPack4.3_opencv_3.4.6_gcc7.5.0.tar.gz
+  tar -xvf TX2_JetPack4.3_opencv_3.4.6_gcc7.5.0.tar.gz && cd ..
 
   # set OPENCV_DIR
-  OPENCV_DIR=$(pwd)/deps/TX2_JetPack4.3_opencv_3.4.10_gcc7.5.0/
+  OPENCV_DIR=$(pwd)/deps/TX2_JetPack4.3_opencv_3.4.6_gcc7.5.0/
 
 else
   echo "Please set OPENCV_DIR manually"