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• Streaming Video from AR Drone

  14 juillet 2015, par kingpin

  I am trying to stream video from my ar drone but it is not working. I have installed ffmpeg version 2.6, am using Ubuntu 14.04, node.js and the ar-drone npm module. I am also using version 1.0 of the ar drone. I was told that I need to use 2.0 because that is what the modules were built using but I would rather not purchase a new one if I don’t have to.Below is the code that I am using

  var arDrone = require('ar-drone');
  
  var http    = require('http');
  
  
  
  console.log('Connecting png stream ...');
  
  
  
  var pngStream = arDrone.createClient().getPngStream();
  
  
  
  var lastPng;
  
  pngStream
  
    .on('error', console.log)
  
    .on('data', function(pngBuffer) {
  
      lastPng = pngBuffer;
  
    });
  
  
  
  var server = http.createServer(function(req, res) {
  
    if (!lastPng) {
  
      res.writeHead(503);
  
      res.end('Did not receive any png data yet.');
  
      return;
  
    }
  
  
  
    res.writeHead(200, {'Content-Type': 'image/png'});
  
    res.end(lastPng);
  
  });
  
  
  
  server.listen(8080, function() {
  
    console.log('Serving latest png on port 8080 ...');
  
  });

  When I run it and go to http://localhost:8080/ in my browser I get the error message "Did not receive any png data yet." Is this because I am using version 1.0 of the drone ??

• Is there an effective and cheap/free way to host video for a mobile app that must be approved by an admin before going live ? [on hold]

  9 août 2013, par user2658775

  We are building a mobile app for the iOS and Android operating systems. The app is to be a communication platform for members within an organization. Content is generated by users and submitted to the admin. Once approved by the admin the content is pushed to the app. One feature of the app is the ability to upload video.

  We are having a tough time attempting to figure out the best way to do this. Because the app will be representing the organization, the organization must have control over the approval process.

  So far we have come up with the following options :

  Option 1 : purchase a dedicated server from hosting service provider. The basic package with Blue host is $150/month which is fairly expensive.

  Option 2 : have the users post to YouTube using their personal accounts. Upon posting to YouTube (via the app) the app would send a notification to the admin that a new video has been posted. Admin would review the video and if acceptable admin would user url link to post video to app. This option, while free, requires many steps that will bog down the submittal process.

  Does anyone know of an effective way to post video to an app that requires approval by an admin ?

• How to use ASCII/ANSI art in ffmpeg ?

  5 juin 2023, par fzagoev

  On the shell I can use something like this to colorize the output to red :
echo -e "\033[31;1;4mHello\033[0m".
See this question List of ANSI color escape sequences for reference.

  


  Is there any way to do this in ffmpeg ?