[Live-devel] Please help me to understand how I can retrieve the Frame Width, Frame Height and Frame Type (I or P frame).

[Michael Margold]

Hello!

Thank you very much for this project!

Please help me to understand how I can retrieve the Frame Width, Frame
Height and Frame Type (I or P frame).

My code example is based on testRTSPClient.cpp

I am in the function DummySink::afterGettingFrame

fSubsession.videoWidth() and fSubsession.videoHeight() always return 0.

All other parameters works fine.

I have h264 video.

Please help!

Thank you!

 

void DummySink::afterGettingFrame(unsigned frameSize, unsigned
numTruncatedBytes, struct timeval presentationTime, unsigned
/*durationInMicroseconds*/)

{

       if (mAudioVideoIn != NULL)

       {

              mAudioVideoIn->OnFrameReceived(fStreamId,
fSubsession.mediumName(), fSubsession.codecName(), fReceiveBuffer,
frameSize, fSubsession.videoWidth(), fSubsession.videoHeight(), 0);

       }

       // We've just received a frame of data.  (Optionally) print out
information about it:

#ifdef DEBUG_PRINT_EACH_RECEIVED_FRAME

       if (fStreamId != NULL) envir() << "Stream \"" << fStreamId << "\"; ";

       envir() << fSubsession.mediumName() << "/" << fSubsession.codecName()
<< ":\tReceived " << frameSize << " bytes";

       if (numTruncatedBytes > 0) envir() << " (with " << numTruncatedBytes
<< " bytes truncated)";

       char uSecsStr[6 + 1]; // used to output the 'microseconds' part of
the presentation time

       sprintf(uSecsStr, "%06u", (unsigned)presentationTime.tv_usec);

       envir() << ".\tPresentation time: " << (int)presentationTime.tv_sec
<< "." << uSecsStr;

       if (fSubsession.rtpSource() != NULL &&
!fSubsession.rtpSource()->hasBeenSynchronizedUsingRTCP())

       {

              envir() << "!"; // mark the debugging output to indicate that
this presentation time is not RTCP-synchronized

       }

#ifdef DEBUG_PRINT_NPT

       envir() << "\tNPT: " <<
fSubsession.getNormalPlayTime(presentationTime);

#endif

       envir() << "\n";

#endif

       // Then continue, to request the next frame of data:

       continuePlaying();

}

 

 

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