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• Flash, Google, VP8, and the future of internet video

  23 février 2010, par Dark Shikari — H.264, HTML5, Theora, VP8, google, x264

  This is going to be a much longer post than usual, as it’s going to cover a lot of ground. The internet has been filled for quite some time with an enormous number of blog posts complaining about how Flash sucks–so much that it’s sounding as if the entire internet is crying wolf. But, of [...]

• Running Background Process using FFMPEG on Google Cloud Run stopping in middle

  7 juillet 2021, par pashaplus

  I have an external bash script that transcodes audio files using FFmpeg and then uploads the files to google cloud storage. I am using the google cloud run platform for this process but the process is stopping in the middle and not getting any clue from the logs. I am using the node js spawn command to execute the bash script

  


      const createHLSVOD = spawn('/bin/bash', [script, file.path, file.destination, contentId, EPPO_MUSIC_HSL_URL, 'Content', speed]);
    createHLSVOD.stdout.on('data', d => console.log(`stdout info: ${d}`));
    createHLSVOD.stderr.on('data', d => console.log(`stderr error: ${d}`));
    createHLSVOD.on('error', d => console.log(`error: ${d}`));
    createHLSVOD.on('close', code => console.log(`child process ended with code ${code}`));


  


  on cloud run beginning the process itself taking a lot of time but in my local machine transcoding and uploading is very fast. after some time transcoding logs are being stopped and no new logs appear. I have no clue what is happening

  


  

  


  so what is happening here ? why it is very slow in the first place and why the process is being stopped in middle without any error

  


  node js script

  


  Transcoding script

  


  Dockerfile

  


• Passing streams from Fluent-ffmpeg to Google Cloud Storage

  31 octobre 2019, par Emilio Faria

  Is there a way to pass a stream from Fluent-mmpeg to Google Cloud Storage ? I’m trying to allow the user to upload any kind of media (audio or video), and I want to convert it to flac before uploading it to GCS.

  I’m using a few middlewares on my route, such as :

  routes.post(
  
    '/upload',
  
    multer.single('audio'),
  
    ConvertController.convert,
  
    UploadController.upload,
  
    FileController.save,
  
    (req, res, next) => res.send('ok')
  
  );

  I was able to stream from Multer to Fluent-mmpeg and save to a file using this code on ConvertController :

  async convert(req, res, next) {
  
      ffmpeg(streamifier.createReadStream(req.file.buffer))
  
        .format('flac')
  
        .output('outputfile.flac')
  
        .audioChannels(1)
  
        .on('progress', function(progress) {
  
          console.log(progress);
  
        })
  
        .run();
  
    }

  But I would like to use .pipe() to pass it to UploadController, where I would then upload to GCS :

  class UploadController {
  
    async upload(req, res, next) {
  
      const gcsHelpers = require('../helpers/google-cloud-storage');
  
      const { storage } = gcsHelpers;
  
  
  
      const DEFAULT_BUCKET_NAME = 'my-bucket-name';
  
  
  
      const bucketName = DEFAULT_BUCKET_NAME;
  
      const bucket = storage.bucket(bucketName);
  
      const fileName = `test.flac`;
  
      const newFile = bucket.file(fileName);
  
  
  
      newFile.createWriteStream({
  
        metadata: {
  
          contentType: file.mimetype
  
        }
  
      })
  
  
  
      file.on('error', err => {
  
        throw err;
  
      });
  
  
  
      file.on('finish', () => console.log('finished'));
  
    }

  The problem is that I cannot find anywhere explaining how I can pass down a stream to the next middleware.

  Is it possible ?