pSlash = strchr(pSlash, '/');
if (pSlash != NULL) {
pSlash++;
if (pSlash != '\0') {
if (*pSlash) {
length = (uint32_t)strlen(pRtpMap) - (pSlash - pRtpMap);
*ppEncodingParams = (char *)MP4Calloc(length + 1);
strncpy(*ppEncodingParams, pSlash, length);