s->all_fragments[i].motion_x = 0xbeef; s->all_fragments[i].motion_y = 0xbeef;
static void init_frame(Vp3DecodeContext *s, GetBitContext *gb){    int i;    /* zero out all of the fragment information */    s->coded_fragment_list_index = 0;    for (i = 0; i < s->fragment_count; i++) {        memset(s->all_fragments[i].coeffs, 0, 64 * sizeof(DCTELEM));        s->all_fragments[i].coeff_count = 0;        s->all_fragments[i].last_coeff = 0;    }}