PROBE_BUF_MAX     508 libavformat/utils.c         for(probe_size= PROBE_BUF_MIN; probe_size<=PROBE_BUF_MAX && !fmt; probe_size<<=1){
PROBE_BUF_MAX     509 libavformat/utils.c             int score= probe_size < PROBE_BUF_MAX ? AVPROBE_SCORE_MAX/4 : 0;