Index: libhb/render.c
===================================================================
--- libhb/render.c	(revision 1234)
+++ libhb/render.c	(working copy)
@@ -25,6 +25,9 @@
     int                  extended_frames;
     uint64_t             last_start[4];
     uint64_t             last_stop[4];
+    uint64_t             lost_time[4];
+    uint64_t             total_lost_time;
+    uint64_t             total_gained_time;
 };
 
 int  renderInit( hb_work_object_t *, hb_job_t * );
@@ -278,11 +281,22 @@
             }            
             else if( result == FILTER_DROP )
             {
-                if( job->vfr )
+                if( job->vfr/* && !(buf_tmp_in->flags & 16)*/ )
                 {
+//                    hb_log("dropping frame with duration: %lld | progressive: %i", buf_tmp_out->stop - buf_tmp_out->start, (buf_tmp_out->flags & 16)? 1: 0);
                     pv->frames_to_extend += 4;
                     pv->dropped_frames++;
                     hb_fifo_get( pv->subtitle_queue );
+                    
+                    
+                    uint64_t temp_duration = buf_tmp_out->stop - buf_tmp_out->start;
+                    pv->lost_time[0] += (temp_duration / 4);
+                    pv->lost_time[1] += (temp_duration / 4);
+                    pv->lost_time[2] += (temp_duration / 4);
+                    pv->lost_time[3] += ( temp_duration - (temp_duration / 4) - (temp_duration / 4) - (temp_duration / 4) );
+                    pv->total_lost_time += temp_duration;
+                    
+//                    hb_log("0: %lld 1: %lld 2: %lld 3: %lld", pv->lost_time[0], pv->lost_time[1], pv->lost_time[2], pv->lost_time[3] );
                     buf_tmp_in = NULL;
                 }
                 else
@@ -385,7 +399,7 @@
 
     if( *buf_out )
     {
-        if( pv->frames_to_extend )
+        if( pv->lost_time[3] > 0 )
         {
             /*
              * A frame's been dropped by VFR detelecine.
@@ -404,11 +418,25 @@
             /* The 4th cached frame will be the to use. */
             ivtc_buffer->start = pv->last_start[3];
             ivtc_buffer->stop = pv->last_stop[3];
-
-            if (pv->frames_to_extend % 4)
+           
+            ivtc_buffer->stop += pv->lost_time[3];
+            pv->total_gained_time += pv->lost_time[3];
+            
+       /*     if( (pv->lost_time < 750))
+            {
+                ivtc_buffer->stop += pv->lost_time;
+                pv->lost_time = 0;
+            }
+            else if (pv->frames_to_extend % 4)
+            {
                 ivtc_buffer->stop += 751;
+                pv->lost_time -= 751;
+            }
             else
+            {
                 ivtc_buffer->stop += 750;
+                pv->lost_time -= 750;
+            }*/
             
             /* Set the 3rd cached frame to start when this one stops,
                and to stop 3003 ticks later -- a normal 29.97fps
@@ -421,10 +449,20 @@
             
             pv->frames_to_extend--;
             pv->extended_frames++;
-        }
+            
+//            hb_log("time gained is: %lld", pv->lost_time[3]);
+            int i;
+            for( i=2; i >=  0; i--)
+            {
+                pv->lost_time[i+1] = pv->lost_time[i];
+            }
+            pv->lost_time[0] = 0;
+            
+        }        
 
     }
 
+    
     return HB_WORK_OK;
 }
 
@@ -432,10 +470,16 @@
 {
     hb_work_private_t * pv = w->private_data;   
         
-    hb_log("render: dropped frames: %i (%i ticks)", pv->dropped_frames, (pv->dropped_frames * 3003) );
+  /*  hb_log("render: dropped frames: %i (%i ticks)", pv->dropped_frames, (pv->dropped_frames * 3003) );
     hb_log("render: extended frames: %i (%i ticks)", pv->extended_frames, ( ( pv->extended_frames / 4 ) * 3003 ) );
-    hb_log("render: Lost time: %i frames (%i ticks)", (pv->dropped_frames * 4) - (pv->extended_frames), (pv->dropped_frames * 3003) - ( ( pv->extended_frames / 4 ) * 3003 ) );
+    hb_log("render: Lost time: %i frames (%i ticks)", (pv->dropped_frames * 4) - (pv->extended_frames), (pv->dropped_frames * 3003) - ( ( pv->extended_frames / 4 ) * 3003 ) 
+*/
 
+        hb_log("render: lost time: %lld", pv->total_lost_time);
+        hb_log("render: gained time: %lld", pv->total_gained_time);
+        
+
+
     /* Cleanup subtitle queue */
     if( pv->subtitle_queue )
     {
@@ -481,7 +525,13 @@
     pv->extended_frames = 0;
     pv->last_start[0] = 0;
     pv->last_stop[0] = 0;
-    
+    pv->total_lost_time = 0;
+    pv->total_gained_time = 0;
+    pv->lost_time[0] = 0;
+    pv->lost_time[1] = 0;
+    pv->lost_time[2] = 0;
+    pv->lost_time[3] = 0;
+
     /* Setup filters */
     /* TODO: Move to work.c? */
     if( job->filters )