fixed setting of a video

src/image_window.cpp

@@ -137,12 +137,11 @@ void ImageWindow::video_Set() {
     
     
     std::string vname = file_name.toStdString();
-    ac::v_cap.open(vname);
+    if(playback->openVideo(vname) == true) {
-    if(ac::v_cap.isOpened() == false) {
-        QMessageBox::information(this, "Error could not open file", "File not supported");
-        return;
-    }
         lbl_video->setText("File Opened and Active");
+    } else {
+        QMessageBox::information(this, "Error could not open file", "File not supported");
+    }
 }
 
 void ImageWindow::video_Clr() {

src/playback_thread.cpp

@@ -117,6 +117,17 @@ bool Playback::setVideoCamera(std::string name, int type, int device, int res, c
     return true;
 }
 
+bool Playback::openVideo(std::string vname) {
+    mutex.lock();
+    ac::v_cap.open(vname);
+    if(ac::v_cap.isOpened() == false) {
+        mutex.unlock();
+        return false;
+    }
+    mutex.unlock();
+    return true;
+}
+
 void Playback::setVector(std::vector<FilterValue> v) {
     mutex.lock();
     // here:

src/playback_thread.h

@@ -76,6 +76,7 @@ public:
     void SetFlip(bool f1, bool f2);
     void setVideo(cv::VideoCapture cap, cv::VideoWriter writer, bool record, bool record_png);
     bool setVideoCamera(std::string name, int type, int device, int res, cv::VideoWriter writer, bool record);
+    bool openVideo(std::string video);
     bool isStopped() const;
     void run();
     void Clear();