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• FFMpeg - move overlay from point a to b to c to d

  26 août 2017, par techr

  I used somebody else’s code posted by LordNeckbeard here : FFmpeg move overlay from one pixel coordinate to another

  I modified it a bit to this :

      ffmpeg -i 4632.mpg -i 4632.bmp -filter_complex "[0]scale=320:240[over];
  
      [1][over]overlay=enable='between=(t,0,50)':x=20+t*30:y=20+t*20" -s 
  
      1280:720 -c:a copy -y output.mpg

  I’d like to be able to limit the movement so the overlay does not go off screen.
  How can I move a scaled clip overlay in four directions, X & Y starting from originating location and back ?

• How to incoporate ffmpeg in my audio input upload form

  3 février 2018, par Michelle Dimwaite

  this is not really a question but a request to point me to any starting direction.
  i have a simple audio upload form which stores the audio to a database or just any folder.
  I want to start by implementing ffmpeg so before this audio is stored in the folder, it goes through ffmpeg(converted to mp3 for example) and stores the converted version to the folder.
  Can someone please point me to any tutorial or links where i can start more research.
  I already installed ffmpeg.exe in xampp
  much appreciated in advance

• Meteor edit audio files on the server

  28 décembre 2015, par Mohammed Hussein

  I am building a Meteor application to split uploaded audio files
  I upload the audio files and store them using GridFS

  child = Npm.require(’child_process’) ;

  var fs = Npm.require('fs');
  
  
  
  
  
  storagePath= fs.realpathSync(process.env.PWD+'/audio');
  
  StaticServer.add('/audio', clipsPath);

  and then using a method i split the audio file using
  child.exec(command) ;

  the command is the ffmpeg command used to cut the source audio file and store it on the storagePath

  the application worked fine locally but when I tried to deploy it to digital ocian i got errors , stating that the file /audio doesnot exist
  I use mupx to deploy and the error appears after "verifying deployment"

  here is the error

      -----------------------------------STDERR-----------------------------------
  
      eteor-dev-bundle@0.0.0 No README data
  
      => Starting meteor app on port:80
  
  
  
      /bundle/bundle/programs/server/node_modules/fibers/future.js:245
  
                                                      throw(ex);
  
                                                            ^
  
      Error: ENOENT, no such file or directory '/bundle/bundle/audio'
  
          at Object.fs.lstatSync (fs.js:691:18)
  
          at Object.realpathSync (fs.js:1279:21)
  
          at server/startup.js:10:20
  
          at /bundle/bundle/programs/server/boot.js:249:5
  
      npm WARN package.json meteor-dev-bundle@0.0.0 No description
  
      npm WARN package.json meteor-dev-bundle@0.0.0 No repository field.
  
      npm WARN package.json meteor-dev-bundle@0.0.0 No README data
  
      => Starting meteor app on port:80
  
  
  
      /bundle/bundle/programs/server/node_modules/fibers/future.js:245
  
                                                      throw(ex);
  
                                                            ^
  
      Error: ENOENT, no such file or directory '/bundle/bundle/audio'
  
          at Object.fs.lstatSync (fs.js:691:18)
  
          at Object.realpathSync (fs.js:1279:21)
  
          at server/startup.js:10:20
  
          at /bundle/bundle/programs/server/boot.js:249:5
  
  
  
      => Redeploying previous version of the app
  
  
  
      -----------------------------------STDOUT-----------------------------------
  
  
  
      To see more logs type 'mup logs --tail=50'
  
  
  
      ----------------------------------------------------------------------------

  the main quistion is , how to i generate an output file using ffmpeg command and store it in a place where I can access it and display it on the browser