media settings: larger video preview

Tuleap: #443
Change-Id: Ib01f394785a17c329032602eb8ea7472e07f26b9
diff --git a/src/mediasettingsview.cpp b/src/mediasettingsview.cpp
index c40ab4c..4ccc1e6 100644
--- a/src/mediasettingsview.cpp
+++ b/src/mediasettingsview.cpp
@@ -277,7 +277,7 @@
         gtk_widget_show_all(priv->video_widget);
         gtk_box_pack_start(GTK_BOX(priv->vbox_main), priv->video_widget, TRUE, TRUE, 0);
         // set minimum size for video so it doesn't shrink too much
-        gtk_widget_set_size_request(priv->video_widget, 300, -1);
+        gtk_widget_set_size_request(priv->video_widget, 400, -1);
 
         if (Video::PreviewManager::instance().isPreviewing()) {
             priv->video_started_by_settings = FALSE;