@@ -18,6 +18,7 @@

  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  */

+#include "libavutil/avassert.h"

 #include "libavutil/avstring.h"

 #include "libavutil/common.h"

 #include "libavutil/internal.h"

@@ -90,9 +91,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)

         s->pts[s->in_frames] = frame->pts;

         s->in_frames++;

         ret = 0;

-    }

-

-    if (s->in_frames == s->nb_frames) {

+    } else if (s->in_frames == s->nb_frames) {

         int n, x;

         for (n = 0; n < s->nb_frames; n++) {

@@ -109,7 +108,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)

         for (n = 0; n < s->nb_frames; n++)

             av_frame_free(&s->frames[n]);

-    }

+    } else

+        av_assert0(0);

     return ret;

 }