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• Record video with overlay pager android

  24 février 2016, par CipherCX

  I am working on one of my app in android which have functionality to capture video with overlay view pager. I tried take snapshot of view of every moment and after that use frames to make video using opencv and ffmpeg plugin but still there is no success . I need solution that how can i achieve this thing .

  Sorry for unclearness , i am new here.

  Please guide me solution anyone .

  Here is what i want to achive

• Evolution #4417 : Augmenter la longueur du mot de passe demandé pour créer un nouvel auteur

  19 décembre 2019, par jean marie grall

  vu sur Seenthis à l’instant :

  It’s Time to Kill Your Eight-Character Password
  It’s time to throw away any passwords of eight characters or less and replace them with much longer passwords — let’s say at least 12 characters.
  https://www.tomsguide.com/us/8-character-password-dead,news-29429.html

  Dans mon idée, c’est surtout pour mixer lettres/chiffres et éviter d’avoir chocolat ou basket comme mot de passe :)
  Pour al longueur, c’est à discuter effectivement. Je ne sais pas ce qui se fait chez les autres...

• Using ffmpeg in node, without using fluent-ffmpeg

  16 mai 2018, par drexdelta

  I am using ffmpeg without using fluent-ffmpeg. I am using ’child_process’ from node.

  First of all I verified how can I pass more than one arguments to the child process command. and I verified it given below code.

  I used copy command like this

  cp vid1.mp4 vid2.mp4

  which successfully copied vid1 into vid2.

  const execFile = require('child_process').execFile;
  
  const child = execFile('cp', ['vid1.mp4', 'vid3.mp4'], (error, stdout, stderr) => {
  
      if (error) {
  
          console.error('stderr: =============================', stderr);
  
          throw error;
  
      }
  
      console.log('stdout: ==========================', stdout);
  
  });
  
  
  
  console.log('here');

  Above code is content of the ’index.js’(default entry point in node). And running this with node . , which copies vid1 into vid3 successfully.

  Now, I want to do watermarking to the given video. For that I am using this tutorial. Currently link to the actual tutorial is broken, you can see it here.

  This is the command that I am using

  ffmpeg -i input.mp4 -i logo.png -filter_complex "overlay=10:10" output.mp4

  Now the same command I am using like this ,

  const execFile = require('child_process').execFile;
  
  
  
  const child = execFile('ffmpeg', ['-i', 'input.mp4' , '-i' , 'logo.png' , '-filter_complex' , '"overlay=10:10"' , 'output.mp4' ], (error, stdout, stderr) => {
  
      if (error) {
  
          console.error('stderr: =============================', stderr);
  
          throw error;
  
      }
  
      console.log('stdout: ==========================', stdout);
  
  });
  
  
  
  console.log('here');

  and I am getting an error , that ,

  No such filter : ’"overlay’ Error initializing complex filters. Invalid
  argument

  /Users/neerpatel/Desktop/testProjects/childProcess/index.js:7
  throw error ;
  ^

  Error : Command failed : ffmpeg -i input.mp4 -i logo.png
  -filter_complex "overlay=10:10" output.mp4

  You can clearly see that the same command that runs in terminal directly, doesn’t work when I pass it in child process. Why does it happen ?

  Moreover, I wanted to add tag ’watermarking’ , but I can’t create tag since my reputation is below 1500. please, someone do it.

  UPDATE :
  I used EXEC , instead of execFile . and it worked like charm, but parent file kept waiting for child process. Child process never returns END signal. and this is my code.

  const exec = require('child_process').exec;
  
  
  
  const child = exec('ffmpeg -i input.mp4 -i logo.png -filter_complex "overlay=10:10" output.mp4', (error, stdout, stderr) => {
  
      if (error) {
  
          console.error('stderr: =============================', stderr);
  
          throw error;
  
      }
  
      console.log('stdout: ==========================', stdout);
  
  });
  
  
  
  console.log('here');