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• NodeJS stream MKV as MP4 video

  29 mars 2024, par SirMissAlot

  I'm trying to stream MKV video as MP4 on the fly with out saving the converted file

  


  first I've tried without conversion :

  


  public async streamById(req: Request, res: Response) {
    const movieId = req.params.id;
    const movie = await MovieModel.findById(movieId);
    if (!movie) {
      return res.status(404).send({ message: 'Movie not found' });
    }

    const filePath = movie.path;

    const stat = fs.statSync(filePath);
    const fileSize = stat.size;
    const range = req.headers.range;

    if (range) {
      const parts = range.replace(/bytes=/, '').split('-');
      const start = parseInt(parts[0], 10);
      const end = parts[1] ? parseInt(parts[1], 10) : fileSize - 1;

      const chunksize = end - start + 1;
      const file = fs.createReadStream(filePath, { start, end });
      const head = {
        'Content-Range': `bytes ${start}-${end}/${fileSize}`,
        'Accept-Ranges': 'bytes',
        'Content-Length': chunksize,
        'Content-Type': 'video/mp4',
      };

      res.writeHead(206, head);
      file.pipe(res);
    } else {
      const head = {
        'Content-Length': fileSize,
        'Content-Type': 'video/mp4',
      };
      res.writeHead(200, head);
      fs.createReadStream(filePath).pipe(res);
    }
  }


  


  which is working but without audio

  


  With ffmpeg I'm getting error : "Error during conversion : Output stream closed"

  


  const command = ffmpeg(file)
    .format('mp4')
    .audioCodec('aac')
    .videoCodec('libx264')
    .outputOptions('-movflags frag_keyframe+empty_moov')
    .outputOptions('-preset veryfast')
    .on('error', (err: any) => {
      console.error('Error during conversion:', err.message);
      res.end();
    })
    .on('end', () => {
      console.log('Conversion complete ');
      res.end();
    });

  // Pipe ffmpeg output directly to the response
  command.pipe(res, { end: true });


  


• I'm having problem encoding video using Laravel FFMPEG to save it to Minio storage

  8 juillet 2022, par Ibrahim Ahmad

  I am trying to convert video from .mp4 extension into HLS format (.m3u8) using Laravel FFMPEG.

  


  FFMpeg::fromDisk('minio')
          ->open($videoFile)
          ->exportForHLS()
          ->onProgress(function ($percentage) use ($movie) {
               Cache::put('progress-' . $movie->id, $percentage);

               if($percentage >= 100) {
                 Cache::forget('progress-' . $movie->id);
                }
             })
             ->toDisk('minio')
             ->addFormat($lowBitrate, function (HLSVideoFilters $filter) {
                 $filter->resize(480, 360);
             })
             ->addFormat($midBitrate, function (HLSVideoFilters $filter) {
                 $filter->resize(852, 480);
              })
              ->addFormat($highBitrate, function (HLSVideoFilters $filter) {
                  $filter->resize(1920, 1080);
              })
              ->save($newFile);


  


  I have a .mp4 video stored in Minio S3 storage, want to export to Minio S3 storage again. And I came up with this error

  


  RecursiveDirectoryIterator::__construct(C:\Windows\Temp/52325dd01cfde90a\): Access is deni (code: 5)


  


  What does the error message say ? But when I export the video file to local, it works totally fine. How do I solve this problem. Thanks.

  


  Update :
The export process requires windows temporary folder, and I cleared the temporary folder, the problem is solved for now. This probably the temporary folder can't hold many files.

  


• ffmpeg transcode and avfilter error

  1er décembre 2014, par rosen

  FFmpeg configure options :

  --enable-avfilter \
  
  --enable-nonfree \
  
  --disable-filters \
  
  --enable-filter=movie \
  
  --enable-filter=overlay \
  
  --enable-filter=null \
  
  --enable-filter=anull \
  
  --enable-filter=scale \
  
  --enable-filter=rotate \

  and run success use

  filter_spec = "null"; /* passthrough (dummy) filter for video */

  and get the transcoding video success !
  but use

  filter_spec = "movie=/storage/emulated/0/image.png [wm]; [in][wm] overlay=10:10 [out]";

  then run to

  if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
  
      &inputs, &outputs, NULL)) < 0)
  
          goto end;

  get the error :

  Invalid data found when processing input

  please help me...