@@ -834,8 +834,11 @@ int dv_produce_packet(DVDemuxContext *c, AVPacket *pkt,

 {

     int size, i;

-    if (buf_size < 4 || buf_size < c->sys->frame_size)

-        return -1;   /* Broken frame, or not enough data */

+    if (buf_size < DV_PROFILE_BYTES ||

+        !(c->sys = dv_frame_profile(buf)) ||

+        buf_size < c->sys->frame_size) {

+          return -1;   /* Broken frame, or not enough data */

+    }

     /* Queueing audio packet */

     /* FIXME: in case of no audio/bad audio we have to do something */