@@ -865,9 +865,12 @@ static void do_video_out(AVFormatContext *s,

         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c

         if (vdelta < -1.1)

             nb_frames = 0;

-        else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS)))

+        else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){

+            if(vdelta<=-0.6){

+                nb_frames=0;

+            }else if(vdelta>0.6)

             ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));

-        else if (vdelta > 1.1)

+        }else if (vdelta > 1.1)

             nb_frames = lrintf(vdelta);

 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);

         if (nb_frames == 0){