Fix some crashes.

3 files changed, 10 insertions, 4 deletions

diff --git a/src/wx/film_viewer.cc b/src/wx/film_viewer.cc
index c7b32ff26..f921f83bd 100644
--- a/src/wx/film_viewer.cc
+++ b/src/wx/film_viewer.cc
@@ -406,6 +406,9 @@ FilmViewer::slow_refresh ()
 bool
 FilmViewer::quick_refresh ()
 {
+	if (!_video_view || !_film) {
+		return true;
+	}
 	return _video_view->refresh_metadata (_film, _player->video_container_size(), _film->frame_size());
 }
 
diff --git a/src/wx/gl_video_view.cc b/src/wx/gl_video_view.cc
index 2da16f1df..bfc611d37 100644
--- a/src/wx/gl_video_view.cc
+++ b/src/wx/gl_video_view.cc
@@ -325,9 +325,10 @@ try
 			}
 
 			get_next_frame (false);
-			set_image (player_video().first->image(bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true));
-			inter_position = player_video().first->inter_position();
-			inter_size = player_video().first->inter_size();
+			shared_ptr<PlayerVideo> pv = player_video().first;
+			set_image (pv->image(bind(&PlayerVideo::force, _1, AV_PIX_FMT_RGB24), false, true));
+			inter_position = pv->inter_position();
+			inter_size = pv->inter_size();
 		}
 		draw (inter_position, inter_size);
 
diff --git a/src/wx/video_view.cc b/src/wx/video_view.cc
index 7e9e1a947..7f93f765e 100644
--- a/src/wx/video_view.cc
+++ b/src/wx/video_view.cc
@@ -60,7 +60,9 @@ VideoView::get_next_frame (bool non_blocking)
 	}
 
 	shared_ptr<Butler> butler = _viewer->butler ();
-	DCPOMATIC_ASSERT (butler);
+	if (!butler) {
+		return false;
+	}
 	add_get ();
 
 	boost::mutex::scoped_lock lm (_mutex);