Handle errors when no filter can be found to adapt from the decoder format to the display one.

src/video_output/display.c

@@ -424,11 +424,7 @@ static void VoutDisplayCreateRender(vout_display_t *vd)
             break;
     }
     if (!filter)
-    {
-        msg_Err(vd, "VoutDisplayCreateRender FAILED");
-        /* TODO */
-        assert(0);
-    }
+        msg_Err(vd, "Failed to adapt decoder format to display");
 }
 
 static void VoutDisplayDestroyRender(vout_display_t *vd)
@@ -1087,6 +1083,10 @@ picture_t *vout_FilterDisplay(vout_display_t *vd, picture_t *picture)
     vout_display_owner_sys_t *osys = vd->owner.sys;
 
     assert(osys->filters);
+    if (filter_chain_GetLength(osys->filters) <= 0) {
+        picture_Release(picture);
+        return NULL;
+    }
     return filter_chain_VideoFilter(osys->filters, picture);
 }
 

src/video_output/video_output.c

@@ -1020,6 +1020,8 @@ static int ThreadDisplayRenderPicture(vout_thread_t *vout, bool is_forced)
         }
         if (!do_dr_spu && subpic)
             subpicture_Delete(subpic);
+        if (!sys->display.filtered)
+            return VLC_EGENERIC;
     }
 
     vout_chrono_Stop(&vout->p->render);