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• Best practices for video storage / processing [closed]

  9 juin 2020, par Jared Tangir

  I am building an app that allows users to upload video submissions for specific events. The video file is handled with django-videokit which uses ffmpeg and mediainfo to get the dimensions, length, mimetype, and create a thumbnail. It then sends the video to a celery task to create an mp4. I am using a digitalocean droplet, nginx, and gunicorn to serve the website. Originally, I was storing, serving and processing all the videos from the droplet. I recently moved my static and media files to a Spaces bucket and use django-storages. It seems like a sacrificed a lot of speed on the uploads for what I think is the "greater good".

  



  After moving to the CDN, when the file upload reaches 100% the page sits idle with the loading wheel while I assume it sends the file to the CDN ? What is the best way to manage storage and processing of large video files ?

  


• Piping stdout from child process directly to google cloud storage. Node.js

  2 octobre 2018, par glenn

  anyone here with expertise on piping to google cloud storage ?

  i am using FFmpeg on a server, and want to pipe to my storage bucket.

  I can get it working when I save FFmpeg output to a file, then createReadableStream from the file, and then pipe that to createWriteStream()

  however, I dont want to generate a static file, and then go through that process every time

  Why can I not just simply pipe FFmpeg.stdout.pipe(file.createWriteStream()) ?

  FYI : I am running FFmpeg as a child process

        spawnFFMPEG = () => {
  
  this.ffmpeg = child_process.spawn('ffmpeg',
  
    [
  
      '-f', 'lavfi', '-i', 'anullsrc',
  
      '-thread_queue_size', '512',
  
      '-i', '-',
  
      '-shortest', '-vcodec', 'copy',
  
      '-f', 'avi',
  
      'pipe:1'
  
    ]
  
  )
  
  
  
   this.ffmpeg.stdout.pipe(myWritableStream)

• How to mix multiple audios from the end ?

  24 avril 2020, par Vijay Singh Kholiya

  In my project I have a feature of recording the meeting which is in a form of group discussion consisting of multiple attendees. All attendees will be having their own personal system and they will be accessing that web app through their personal account. Their is one meeting controller(only one person) who starts the recording and for every attendee whether he is present in the same room or is remote, their microphone will be opened and recording will be stored in S3 bucket.

  



  Since I need a single audio file which consists of the whole meeting recording, so I am using SOX for this. But the problem is, what if any attendee attends meeting in between the discussion so he's audio recording length will be smaller than everyone else.

  



  Since I am mixing the audio files to get one file, but for this late commer attendee the mixing will be wrong. So how can I mix the audios from the end instead of starting ?