static int flv_probe(AVProbeData *p) { const uint8_t *d; if (p->buf_size < 6) return 0; d = p->buf; if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0) { return AVPROBE_SCORE_MAX; } return 0; }