s->min_qcoeff=-255; s->max_qcoeff= 255; s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); s->inter_quant_bias= 0;
void mpeg1_encode_init(MpegEncContext *s){    static int done=0;    if(!done){        int f_code;        int mv;        done=1;        for(f_code=1; f_code<=MAX_FCODE; f_code++){            for(mv=-MAX_MV; mv<=MAX_MV; mv++){                int len;                if(mv==0) len= mbMotionVectorTable[0][1];                else{                    int val, bit_size, range, code;                    bit_size = s->f_code - 1;                    range = 1 << bit_size;                    val=mv;                    if (val < 0)                         val = -val;                    val--;                    code = (val >> bit_size) + 1;                    if(code<17){                        len= mbMotionVectorTable[code][1] + 1 + bit_size;                    }else{                        len= mbMotionVectorTable[16][1] + 2 + bit_size;                    }                }                mv_penalty[f_code][mv+MAX_MV]= len;            }        }                for(f_code=MAX_FCODE; f_code>0; f_code--){            for(mv=-(8<<f_code); mv<(8<<f_code); mv++){                fcode_tab[mv+MAX_MV]= f_code;            }        }    }    s->mv_penalty= mv_penalty;        s->fcode_tab= fcode_tab;}