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• How to get FFMpeg code working on remote server ?

  4 février 2016, par OMi

  I am using the following code to add plain text to videos. It works fine on localhost with EasyPHP server but I am not able to get the output on server (ffmpeg hosting). In addition, video conversion, video to audio everything is working fine.

  @exec('ffmpeg -y -i '.$source_file.' -vf drawtext="fontfile=font_omiA.ttf: \ text='.$watermark_text.': fontcolor=white@0.5: fontsize=20: \ x=(w-text_w)-3: y=(h-text_h-line_h)+10" '.$output_filename.'');

  I tried with following code too but I didn’t get success :(

  @exec("ffmpeg -y -i ".$source_file." \"fontfile=font_omiA.ttf: \ text=".$watermark_text.": \ fontcolor=white@0.5: \ fontsize=20: \ x=((w-text_w)-3): y=((h-text_h-line_h)+10))\" ".$output_filename."");

• ffmpeg scale2ref works locally but does not work on server

  10 novembre 2020, par nopapi

  I'm trying to execute this command :

  


  ffmpeg -i input.mp4 -i watermark.png -filter_complex "[1][0]scale2ref=w=oh*mdar:h=ih/20[wm][vid] ;[vid][wm]overlay=10:10" -c:v libx264 -crf 23 -preset veryfast -c:a aac -ab 128k -movflags faststart output.mp4

  


  This command add a watermark on the video and compress it.

  


  It worked localy on my computer but once I deployed the app on Centos server it stopped working and this is the error I get :

  


  console output

  


  Any help please. thank you

  


• Best way to record a HTML Canvas/WebGL animation server-side into a video ?

  14 décembre 2016, par Abhinav

  I have a set of animations which I can make in Canvas (fabric.js) or WebGL (three.js). I need to record them automatically, server-side, through a script and output a video file.

  The animations include :
  

  1. Pictures
     
  2. Videos (with audio)
     
  3. Other animations/effects

  I have researched a lot during last few months on this.

  Results
  1. User PhantomJS + FFMPEG
  Run HTML Canvas animations on headless browser(PhantomJS) and record with FFMPEG. Here the issue is PhantomJS supports neither WebGL nor Video element. http://phantomjs.org/supported-web-standards.html

  2. Use Websockets to send data back to server using DataURL
  Here again, we will need to run the animations on browser (which we can’t because we have to do everything on server).

  3. Use node-canvas
  This is a library by TJ Holowaychuk which allows rendering HTML Canvas on Node.js. But it has its own limitations plus I haven’t really explored this field much.
  (If someone could shed more light on this library)

  If anyone has done it before or can guide me somewhere useful.
  All we need to do is use some data to create animations and record it into a video, everything on server side.