X-Git-Url: https://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.1%2Fcinelerra%2Fplaybackengine.C;h=b59e609b189c4e28f63b6078033953f344f8dc0d;hb=4742c7a3793e92da3e3e46a32e1a4aa4d4c6b366;hp=71126cf82810c6fce05b7c2a1aa9dae7ce4c273b;hpb=aa9374b902768107ebda0cffe739325ffed372f6;p=goodguy%2Fcinelerra.git

diff --git a/cinelerra-5.1/cinelerra/playbackengine.C b/cinelerra-5.1/cinelerra/playbackengine.C
index 71126cf8..b59e609b 100644
--- a/cinelerra-5.1/cinelerra/playbackengine.C
+++ b/cinelerra-5.1/cinelerra/playbackengine.C
@@ -130,7 +130,11 @@ int PlaybackEngine::create_render_engine()
 void PlaybackEngine::delete_render_engine()
 {
 	renderengine_lock->lock("PlaybackEngine::delete_render_engine");
-	delete render_engine;  render_engine = 0;
+	if( render_engine ) {
+		render_engine->interrupt_playback();
+		render_engine->wait_done();
+		delete render_engine;  render_engine = 0;
+	}
 	renderengine_lock->unlock();
 }
 
@@ -407,7 +411,8 @@ void PlaybackEngine::run()
 // Start tracking after arming so the tracking position doesn't change.
 // The tracking for a single frame command occurs during PAUSE
 			init_tracking();
-			clear_output();
+			if( !command->single_frame() )
+				clear_output();
 // Dispatch the command
 			start_render_engine();
 			break;