static int mpeg4video_probe(AVProbeData *probe_packet)
{
    uint32_t temp_buffer= -1;
    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
    int i;
    for(i=0; i<probe_packet->buf_size; i++){
        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
        if ((temp_buffer & 0xffffff00) != 0x100)
            continue;
        if (temp_buffer == VOP_START_CODE)                         VOP++;
        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
        else if (temp_buffer < 0x120)                              VO++;
        else if (temp_buffer < 0x130)                              VOL++;
        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
    }
    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
        return AVPROBE_SCORE_MAX/2;
    return 0;
}
['static int mpeg4video_probe(AVProbeData *probe_packet)\n{\n    uint32_t temp_buffer= -1;\n    int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;\n    int i;\n    for(i=0; i<probe_packet->buf_size; i++){\n        temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];\n        if ((temp_buffer & 0xffffff00) != 0x100)\n            continue;\n        if (temp_buffer == VOP_START_CODE)                         VOP++;\n        else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;\n        else if (temp_buffer < 0x120)                              VO++;\n        else if (temp_buffer < 0x130)                              VOL++;\n        else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)\n                 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;\n    }\n    if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)\n        return AVPROBE_SCORE_MAX/2;\n    return 0;\n}']