libavcodec/mpegvideo_enc.c:3121: error: Buffer Overrun L2
  Offset: [-63, 127] Size: 65.

libavcodec/mpegvideo_enc.c:3013:9: <Offset trace>
3011.         /* note: block[0] is assumed to be positive */
3012.         block[0] = (block[0] + (q >> 1)) / q;
3013.         start_i = 1;
              ^
3014.         last_non_zero = 0;
3015.         qmat = s->q_intra_matrix[qscale];

libavcodec/mpegvideo_enc.c:3013:9: Assignment
3011.         /* note: block[0] is assumed to be positive */
3012.         block[0] = (block[0] + (q >> 1)) / q;
3013.         start_i = 1;
              ^
3014.         last_non_zero = 0;
3015.         qmat = s->q_intra_matrix[qscale];

libavcodec/mpegvideo_enc.c:2964:1: <Length trace>
2962. }
2963. 
2964. int dct_quantize_trellis_c(MpegEncContext *s,
      ^
2965.                         DCTELEM *block, int n,
2966.                         int qscale, int *overflow){

libavcodec/mpegvideo_enc.c:2964:1: Array declaration
2962. }
2963. 
2964. int dct_quantize_trellis_c(MpegEncContext *s,
      ^
2965.                         DCTELEM *block, int n,
2966.                         int qscale, int *overflow){

libavcodec/mpegvideo_enc.c:3121:30: Array access: Offset: [-63, 127] Size: 65
3119.                     int run= i - survivor[j];
3120.                     int score= distortion + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
3121.                     score += score_tab[i-run];
                                   ^
3122. 
3123.                     if(score < best_score){
