av_log(s, AV_LOG_DEBUG, "HeaderKey is <%s>\n", val);
sscanf(val, "%u%u%u%u", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
for (idx = 0; idx < 4; idx++) {
av_log(s, AV_LOG_DEBUG, "HeaderKey is <%s>\n", val);
sscanf(val, "%u%u%u%u", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
for (idx = 0; idx < 4; idx++) {