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• libFLAC : Fix an out-of-bounds head read

  26 septembre 2015, par Erik de Castro Lopo

  libFLAC : Fix an out-of-bounds head read
  When doing a flac to flac conversion, bad data read from the input file
  
  was making it all the way through the encoder to cause a buffer read
  
  past the end of the buffer in the CRC calculation.
  Fix had two parts :
  * bitwriter.c : Make a debug only assert (assert bits < 32) into a proper
  
    all-build failure.
  
  * stream_encoder.c : Catch the error condition of wasted bits being greater
  
    that bits_pers_sample and limit it to the bits_per_sample value.
  Found using the American Fuzzy Lop fuzzer.
  

  • [DH] src/libFLAC/bitwriter.c
  • [DH] src/libFLAC/stream_encoder.c

• Merge commit ’6fe2641d6e410b7bc203138fa97e1118b411f16d’

  29 mars 2015, par Michael Niedermayer

  Merge commit ’6fe2641d6e410b7bc203138fa97e1118b411f16d’
  * commit ’6fe2641d6e410b7bc203138fa97e1118b411f16d’ :
  
    lavc : add profile define for DTS Express
  Conflicts :
  
  	doc/APIchanges
  
  	libavcodec/version.h
  See : 11fe56c8bbf39cd0c3edbf0cd404dea400ff7e0c
  
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] doc/APIchanges

• no sound when streaming mkv video to html 5 video player via node js

  8 septembre 2013, par Tristan

  I have been playing around with building a simple html 5 media server for all my mkv files since I discovered chrome can play them when just dragging and dropping the file into a new tab !

  So I actually have something up and going and I am able to stream the mkv files through a nodejs sever to a simple html 5 video player, the only problem is there is no sound and the volume icon in the controls is crossed and greyed out !

  Now I realise that mkv files can have multiple audio streams within and this is probably my issue, that the video player doesn't know which one to use or is missing it for some reason.

  I have avoided using ffmpeg for the time being as I wanted to stream the videos without any transcoding (and without using express as shown in the fluent-ffmpeg stream example).

  See below for the code I use to stream the video :

  cFs.exists(sFileName, function(bExists){
  
      if (bExists)
  
      {
  
          var cFile = null;
  
  
  
          var cStat = cFs.statSync(sFileName);
  
  
  
          if (cRequest.headers['range'])
  
          {
  
              var aParts = cRequest.headers['range'].replace(/bytes=/, "").split("-");
  
  
  
              var nStart = parseInt(aParts[0], 10);
  
              var nEnd = aParts[1] ? parseInt(aParts[1], 10) : cStat.size - 1;
  
              var nChunkSize = (nEnd - nStart) + 1;
  
  
  
              cFile = cFs.createReadStream(sFileName, {start: nStart, end: nEnd});
  
              cResponse.writeHead(206, {
  
                  "Content-Type": "video/x-matroska",
  
                  "Content-Range": "bytes " + nStart + "-" + nEnd + "/" + cStat.size,
  
                  "Accept-Ranges": "bytes",
  
                  "Content-Length": nChunkSize
  
  
  
              });
  
  
  
              cFile.pipe(cResponse);
  
  
  
              cRequest.on('close', function(){
  
                  cFile.destroy();
  
              });
  
          }
  
          else
  
          {
  
              cResponse.writeHead(200, {
  
                  "Content-Type": "video/x-matroska",
  
                  "Content-Length": cStat.size
  
              });
  
  
  
              cFile = cFs.createReadStream(sFileName);
  
              cFile.pipe(cResponse);
  
          }
  
  
  
          cRequest.on('close', function(){
  
              if (cFile)
  
              {
  
                  cFile.destroy();
  
              }
  
          });
  
  
  
          /*new ffmpeg({
  
              source: sFileName
  
          }).toFormat('webm').writeToStream(cResponse, function(){
  
              console.log(arguments);
  
          });*/
  
      }
  
      else
  
      {
  
          cResponse.writeHead(404, {
  
              "Content-Type": "text/plain"
  
          });
  
  
  
          cResponse.write("404 Not Found\n");
  
          cResponse.end();
  
      }
  
  });

  if you could help me sort out the sound for the code above or can provide a fluent-ffmpeg solution without using express and retaining as much image quality as possible that would be great !