updating python tutorials + providing necessary data

samples/cpp/peopledetect.cpp

@@ -16,7 +16,7 @@ const char* keys =
     "{ help h      |                     | print help message }"
     "{ image i     |                     | specify input image}"
     "{ camera c    |                     | enable camera capturing }"
-    "{ video v     | ../data/768x576.avi | use video as input }"
+    "{ video v     | ../data/vtest.avi   | use video as input }"
     "{ directory d |                     | images directory}"
 };
 
@@ -79,7 +79,7 @@ int main(int argc, char** argv)
     namedWindow("people detector", 1);
 
     string pattern_glob = "";
-    string video_filename = "../data/768x576.avi";
+    string video_filename = "../data/vtest.avi";
     int camera_id = -1;
     if (parser.has("directory"))
     {

samples/gpu/bgfg_segm.cpp

@@ -23,10 +23,10 @@ enum Method
 int main(int argc, const char** argv)
 {
     cv::CommandLineParser cmd(argc, argv,
-        "{ c camera |             | use camera }"
-        "{ f file   | ../data/768x576.avi | input video file }"
-        "{ m method | mog         | method (mog, mog2, gmg, fgd) }"
-        "{ h help   |             | print help message }");
+        "{ c camera |                    | use camera }"
+        "{ f file   | ../data/vtest.avi  | input video file }"
+        "{ m method | mog                | method (mog, mog2, gmg, fgd) }"
+        "{ h help   |                    | print help message }");
 
     if (cmd.has("help") || !cmd.check())
     {

samples/gpu/performance/tests.cpp

@@ -1191,10 +1191,10 @@ TEST(GoodFeaturesToTrack)
 
 TEST(MOG)
 {
-    const std::string inputFile = abspath("../data/768x576.avi");
+    const std::string inputFile = abspath("../data/vtest.avi");
 
     cv::VideoCapture cap(inputFile);
-    if (!cap.isOpened()) throw runtime_error("can't open ../data/768x576.avi");
+    if (!cap.isOpened()) throw runtime_error("can't open ../data/vtest.avi");
 
     cv::Mat frame;
     cap >> frame;

samples/tapi/bgfg_segm.cpp

@@ -17,11 +17,11 @@ using namespace cv;
 int main(int argc, const char** argv)
 {
     CommandLineParser cmd(argc, argv,
-        "{ c camera   |             | use camera }"
-        "{ f file     | ../data/768x576.avi | input video file }"
-        "{ t type     | mog2        | method's type (knn, mog2) }"
-        "{ h help     |             | print help message }"
-        "{ m cpu_mode | false       | press 'm' to switch OpenCL<->CPU}");
+        "{ c camera   |                    | use camera }"
+        "{ f file     | ../data/vtest.avi  | input video file }"
+        "{ t type     | mog2               | method's type (knn, mog2) }"
+        "{ h help     |                    | print help message }"
+        "{ m cpu_mode | false              | press 'm' to switch OpenCL<->CPU}");
 
     if (cmd.has("help"))
     {

samples/tapi/hog.cpp

@@ -71,7 +71,7 @@ int main(int argc, char** argv)
         "{ h help      |                | print help message }"
         "{ i input     |                | specify input image}"
         "{ c camera    | -1             | enable camera capturing }"
-        "{ v video     | ../data/768x576.avi | use video as input }"
+        "{ v video     | ../data/vtest.avi | use video as input }"
         "{ g gray      |                | convert image to gray one or not}"
         "{ s scale     | 1.0            | resize the image before detect}"
         "{ o output    |                | specify output path when input is images}";