1 files changed, 4 insertions, 1 deletions
diff --git a/video-opencv/impl-camera.cpp b/video-opencv/impl-camera.cpp
index 3f2a1b1a..7e357d7c 100644
--- a/video-opencv/impl-camera.cpp
+++ b/video-opencv/impl-camera.cpp
@@ -33,7 +33,7 @@ bool cam::is_open()
 bool cam::start(info& args)
 {
     stop();
-    cap.emplace(idx + video_capture_backend);
+    cap.emplace(idx, cv::CAP_DSHOW);
 
     if (args.width > 0 && args.height > 0)
     {
@@ -43,6 +43,9 @@ bool cam::start(info& args)
     if (args.fps > 0)
         cap->set(cv::CAP_PROP_FPS, args.fps);
 
+    if (args.use_mjpeg)
+        cap->set(cv::CAP_PROP_FOURCC, cv::VideoWriter::fourcc('M', 'J', 'P', 'G'));
+
     if (!cap->isOpened())
         goto fail;