Maybe lots persons encounter the same circumstances : after the succession of building LIVE555, and execute the testRTSPClient to connect a rtsp server: the debug log seems be pettey good; But when we damp the h264 data to be played by VLC or ffplay, that is unplayable. Of cource, if we deliver the h264 data to a h264 decoderdirectly, there would occur error always. I found there is not article be concise with complete code in the website, So i fill it.The code base on LIVE555\testProgs\testRTSPClient.cpp.modify the constructor and destructor of DummySink as below, it is about line 479:
pH264 = NULL;DummySinkstreamId) : MediaSink(env),fSubsession(subsession) { fStreamId = strDup(streamId); fReceiveBuffer [DUMMY_SINK_RECEIVE_BUFFER_SIZE]; pH264 )malloc();}DummySink::~DummySink() { delete[] fReceiveBuffer; delete[] fStreamId; if(NULL != pH264) free(pH264);}
And modify afterGettingFrame (the one with debug log ) as
void DummySink::afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes,struct timeval presentationTime, unsigned /*durationInMicroseconds*/) {(fStreamId fStreamId ; envir() fSubsession.codecName() frameSize << " bytes"; numTruncatedBytes << " bytes truncated)"; ]; // used to output the ‘microseconds’ part of the presentation time sprintf(uSecsStr, "%06u", (unsigned)presentationTime.tv_usec); envir() (uSecsStr; fSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP()) {envir() << "!"; // mark the debugging output to indicate that this presentation time is not RTCP-synchronized }#ifdef DEBUG_PRINT_NPT envir() fSubsession.getNormalPlayTime(presentationTime);#endif envir() ;#endif#else printf(, __FUNCTION__ ); if(0 == strncmp(fSubsession.codecName(), "H264", 16)) { unsigned char nalu_header[4] = { 0, 0, 0, 1 };unsigned char extraData[256]; ;SPropRecord *pSPropRecord; pSPropRecord = parseSPropParameterSets(fSubsession.fmtp_spropparametersets(), num);unsigned int extraLen; extraLen = 0; (; i < num; i++){memcpy(&extraData[extraLen], &nalu_header[0], 4); extraLen += 4; memcpy(&extraData[extraLen], pSPropRecord[i].sPropBytes, pSPropRecord[i].sPropLength); extraLen += pSPropRecord[i].sPropLength; }/*for i*/ memcpy(&extraData[extraLen], &nalu_header[0], 4); extraLen += 4; delete[] pSPropRecord ;memcpy(pH264, &extraData[0], extraLen); memcpy(pH264 + extraLen, fReceiveBuffer, frameSize);int totalSize; totalSize = extraLen + frameSize; fp = fopen("saved.h264", "wb"); fwrite(pH264, 1, totalSize, fp); fflush(fp); printf(, totalSize); }continuePlaying();}
That is, LIVE555 would omit the SPS/PPS information of each h264 slice.We need to fill SPS and PPS in the front. SPS,PPSand original data should be aparted by "0x00, 0x00, 0x00, 0x01".
，放弃那些不愿放弃的，容忍那些不可容忍的。
