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• How to render animated content in backend using nodejs ?

  29 novembre 2018, par user9964622

  I have created animation using tweenjs and createjs libraries createjs and tweenjs, now, I’d like to convert these animations to video files (MPEG4, or other, doesn’t matter) or how can I render it in the backend using nodejs ?

  I have animation looking like this : Animated

  Here is solution I have tried so far using nodejs and ffmpeg module

  var express = require('express');
  
  var cors = require('cors')
  
  var path = require('path');
  
  var app = express();
  
  var ffmpeg = require('ffmpeg');
  
  //Cors Middleware
  
  app.use(cors());
  
  // Body Parser Middleware
  
  app.use(bodyParser.json())
  
  // Port Number
  
  const port = process.env.PORT || 8000;
  
  //video processing
  
  
  
  try {
  
      var process = new ffmpeg('/path/to/your_movie.mp4');
  
      process.then(function (video) {
  
  
  
          video
  
          .setVideoSize('640x?', true, true, '#fff')
  
          .audioCodec('libmp3lame')
  
          .videoCodec('libx264')
  
          .setAudioCodec('libfaac')
  
          .setAudioChannels(2)
  
          .save('/path/to/save/your_movie.mp4', function (error, file) {
  
              if (!error)
  
                  console.log('Video file: ' + file);
  
          });
  
  
  
      }, function (err) {
  
          console.log('Error: ' + err);
  
      });
  
  } catch (e) {
  
      console.log(e.code);
  
  
  
  
  
  
  
  app.use('/video', video);
  
  app.get('/', (req, res) => {
  
    res.send('invaild endpoint');
  
  });
  
  
  
  app.get('*', (req, res) => {
  
    res.sendFile(path.join(__dirname + '/video-client/dist/video-client/index.html'));
  
  });
  
  
  
  // Start Server
  
  app.listen(port, () => {
  
    console.log('Server started on port '+port);
  
  });

  Here is tutorial of what I want to achieve but its written in js and PHP , I want the same but in nodejs html canvas animations to video

  I am new to nodejs and backend stuff in general, unfortunately, my solution does not work so far, and I am stuck. I need help

  Is this the right way to create video from animation if not what is the best way ? ,

  please help, any suggestion or tutorials will be appreciated, thanks

• How to stream FFmpeg h.264 encoded output using UDP without the in-built UDP method

  19 juillet 2021, par guidingfox

  I am trying to create a remote desktop application and I have a pretty good idea on how I'll capture the screen, encode it to h.264 or HEVC and then write it to a file.

  


  In my case though, I want to have this encoded stream sent over UDP, but without the in-built streaming method of ffmpeg for better control over it.

  


  This is how I think it works, please correct me if I'm wrong :

  


   1. Capture and encode the video
 2. Poll the ffmpeg buffer for new frames. 
 3. Serialise the video
 4. create an RTP/RTSP packet 
 5. Stream that packet over UDP.


  


  But I am confused as to how I'll implement the steps 2-4 in code (C++).
I am not even sure if this is the right approach.

  


  So any help/resources to get me started on this would be greatly appreciated.

  


• Set up a TV like RTMP channel

  17 mars 2015, par JohnWolf

  I’m looking for the best way to play a sequence of videos at specific times on a RTMP channel. Right now, I’ve setup a few things that seem viable to achieve this :

  1. Setup a Wowza Streaming Engine on a server
  2. Setup a Wowza Streaming Cloud account, that receives the stream from the server and broadcasts it with different qualities.

  Now I plugged a RTMP stream into the Wowza Cloud and was able to play it in different qualities on all browsers and devices. That’s the end game.

  I was able to play videos on the stream using ffmpeg and started to work on having video playlists running.

  So my question is simple :

  Do you think it’s a good way to do this ? How would you do it otherwise ?

  Thanks
  John