[Live-devel] Creating Transport Stream file from MPEG-2 Elementary video file

[Drew, Steve]

Hello,

 

I am having problems trying to create a Transport Stream file from
MPEG-2 Elementary Video files.  I have successfully converted from
program stream using testMPEG1or2ProgramToTransportStream, and have
successfully streamed using testMPEG1or2VideoStreamer, but I would like
to send using transport stream instead.

 

I have made some slight modifications to
testMPEG1or2ProgramToTransportStream as noted below.  This program
results in a choppy and condensed transport stream file where the video
seems to lack any sense of timing.  I was hoping someone could verify
the following program.  I am using Windows XP with MinGW compiler. 

 

#include "liveMedia.hh"

#include "BasicUsageEnvironment.hh"

 

char const* inputFileName = "in.mpg";

char const* outputFileName = "out.ts";

 

void afterPlaying(void* clientData); // forward

 

UsageEnvironment* env;

 

int main(int argc, char** argv) {

  // Begin by setting up our usage environment:

  TaskScheduler* scheduler = BasicTaskScheduler::createNew();

  env = BasicUsageEnvironment::createNew(*scheduler);

 

  // Open the input file as a 'byte-stream file source':

  FramedSource* inputSource = ByteStreamFileSource::createNew(*env,
inputFileName);

  if (inputSource == NULL) {

    *env << "Unable to open file \"" << inputFileName

       << "\" as a byte-stream file source\n";

    exit(1);

  }

  

  MPEG2TransportStreamFromESSource* tsFrames

        = MPEG2TransportStreamFromESSource::createNew(*env);

// Add the elementary video file stream source

  tsFrames->addNewVideoSource(inputSource, 2);

 

  // Open the output file as a 'file sink':

  MediaSink* outputSink = FileSink::createNew(*env, outputFileName);

  if (outputSink == NULL) {

    *env << "Unable to open file \"" << outputFileName << "\" as a file
sink\n";

    exit(1);

  }

  

  // Finally, start playing:

  *env << "Beginning to read...\n";

  outputSink->startPlaying(*tsFrames, afterPlaying, NULL);

 

  env->taskScheduler().doEventLoop(); // does not return

 

  return 0; // only to prevent compiler warning

}

 

void afterPlaying(void* /*clientData*/) {

  *env << "Done reading.\n";

  *env << "Wrote output file: \"" << outputFileName << "\"\n";

  exit(0);

}

 

___________________

 

Thanks,

 

Steve

 


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