libavcodec/svq3.c:491: error: Buffer Overrun L1
  Offset added: 16 Size: 4.

libavcodec/svq3.c:430:1: <Length trace>
428. }
429. 
430. static int svq3_decode_mb(H264Context *h, unsigned int mb_type)
     ^
431. {
432.     int i, j, k, m, dir, mode;

libavcodec/svq3.c:430:1: Parameter `h->mv_cache[*][*][*]`
428. }
429. 
430. static int svq3_decode_mb(H264Context *h, unsigned int mb_type)
     ^
431. {
432.     int i, j, k, m, dir, mode;

libavcodec/svq3.c:491:17: Array access: Offset added: 16 Size: 4
489.             }
490.             if (s->mb_y > 0) {
491.                 memcpy(h->mv_cache[m][scan8[0] - 1*8], s->current_picture.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
                     ^
492.                 memset(&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
493. 
