MP4 Mux nor working in IPP7.1

Hi, Is there a working sample in IPP 7.1 that shows MP4 mux with video? The examples in UMC documentation are not in sync with IPP7.1. The following is a code segment I wrote for converting a H264 pure video stream to an MP4 file. The splitter reading H.264 file works correctly but the MP4 mux produces an empty file (1 KB size). I had the same problem when trying to output TS with MPEG2Muxer. I appreciate any help. thanks. -hari

	UMC::Status result;
	int nCount = 0;

	UMC::MediaData buf;
	buf.Alloc(1024*1024);
	FileReader reader;

	FileReaderParams readerParams;

	readerParams.m_sFileName = argv[nInFileNameIdx];

	UMC::Status status = reader.Init(&readerParams);

	if(status != UMC::UMC_OK)

	{

		printf("ncan not open input file");

		return 1;

	}
	Splitter *pSplitter = (Splitter*)new ThreadedDemuxer();

	if(!pSplitter)

		return UMC_ERR_ALLOC;
	SplitterParams splitterParams;

	splitterParams.m_pDataReader = &reader;

	splitterParams.m_iFlags      = VIDEO_SPLITTER;
	if(UMC_OK != pSplitter->Init(&splitterParams))

	{

		UMC_DELETE(pSplitter);

		return UMC_ERR_FAILED;

	}
	pSplitter->Run();
	// init muxer

	UMC::MP4Muxer outMP4Muxer;

	UMC::MuxerParams muxerParams;

	UMC::FileWriter writer;

	UMC::FileWriterParams writerParams;

	UMC::AudioStreamInfo audioInfo;

	UMC::VideoStreamInfo videoInfo;
	// Initialize file writer

	//writerParams.m_iBufferSize = 0;

	writerParams.m_sFileName = argv[nOutFileNameIdx];

	result = writer.Init(&writerParams);

	if(result != UMC::UMC_OK)

	{

		printf("ncan not create file writer: %s", argv[nOutFileNameIdx]);

		return 1;

	}

	// Fill params structure

	muxerParams.m_lpDataWriter = &writer;

	muxerParams.m_SystemType = MPEG4_SYSTEM_STREAM; //UMC::H264_PURE_VIDEO_STREAM;; //

	muxerParams. m_lFlags = UMC::FLAG_START_WITH_HEADER|UMC::FLAG_FRAGMENTED_AT_I_PICTURES;// | FLAG_DATA_FROM_SPLITTER;; //FLAG_FRAGMENTED_AT_I_PICTURES | FLAG_DATA_FROM_SPLITTER;

	muxerParams.m_nNumberOfTracks = 1; // currently video only; streamInfo->m_nOfTracks;

	int videoTrackNo = 0;

	muxerParams.m_pTrackParams = new UMC::TrackParams[muxerParams.m_nNumberOfTracks];   
	// video info

	// video params

	muxerParams.m_pTrackParams[videoTrackNo].type = UMC::VIDEO_TRACK;

	muxerParams.m_pTrackParams[videoTrackNo].bufferParams.m_prefInputBufferSize=50000;//20000000;

	muxerParams.m_pTrackParams[videoTrackNo].bufferParams.m_prefOutputBufferSize= 50000;//20000000;

	muxerParams.m_pTrackParams[videoTrackNo].bufferParams.m_numberOfFrames = 30;
	UMC::SplitterInfo *pSplInfo = new SplitterInfo();

	pSplitter->GetInfo(&pSplInfo);

	muxerParams.m_pTrackParams[videoTrackNo].info.video = (UMC::VideoStreamInfo *)pSplInfo->m_ppTrackInfo[0]->m_pStreamInfo;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video = new UMC::VideoStreamInfo();

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->iBitrate =  2000000;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->streamType = UMC::H264_VIDEO;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->streamSubtype = UMC::AVC1_VIDEO;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->videoInfo.m_colorFormat = UMC::YV12;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->fFramerate = 60;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->videoInfo.m_iHeight = 720;

	//muxerParams.m_pTrackParams[videoTrackNo].info.video->videoInfo.m_iWidth = 1280;
	// call init

	result = outMP4Muxer.Init(&muxerParams);

	if(result != UMC::UMC_OK)

	{

		printf("ncan not create MP4 mux for: %s", argv[nOutFileNameIdx]);

		return 1;

	}
	int nTotSize = 0;

	float nFramePeriod = 1.0/60;

	float nCutTS = 0.0;

	// read frames

	for(;;)

	{
		// ask for video input buffer

		status = outMP4Muxer.LockBuffer(&buf, 0);

		if (UMC::UMC_OK == status) {

			//read next frame

			do

			{

				status = pSplitter->GetNextData(&buf, 0);

			} while(status == UMC_ERR_NOT_ENOUGH_DATA);

			if(status == UMC_ERR_END_OF_STREAM){

				printf("nEnd of stream");

				outMP4Muxer.PutEndOfStream(0);

				outMP4Muxer.Close();

				break;

			}

			else if(status != UMC_OK)

			{

				printf("ncan not get data from splitter");

			}

			else

			{
				buf.m_fPTSEnd = buf.m_fPTSStart = nCutTS;

				buf.m_fPTSEnd = nCutTS + nFramePeriod;

				nCutTS  += nFramePeriod;

				printf("nPTS-St: %f PTS-Ed: %f FrmType: %d", buf.m_fPTSStart, buf.m_fPTSEnd, buf.m_frameType);
				status = outMP4Muxer.UnlockBuffer(&buf, 0);

				printf("nFrame %d size: %d status: %d", nCount++, buf.GetDataSize(), status);

				nTotSize += buf.GetDataSize();

			}

		}

	}
	printf("nTotal data: %d", nTotSize);

	printf("n MP4 mux for: %s", argv[nOutFileNameIdx]);