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• FFMPEG support for WebVTT subtitle inline cues

  28 janvier 2024, par Cole

  I am trying to "soft" embed webvtt subtitles into my video using FFMPEG. I need to be able to place to the subtitles at a specific location within the video as well.

  


  I have created a webvtt file that goes along with my video however ; when I pass this through FFMPEG and then try to play the video in VLC media player, the positioning seems to be ignored.

  


  When I play the original video in VLC and then load the same webvtt subtitles file, the positioning is correct ?

  


  Does FFMPEG support the webvtt cues ? It is very possible that I am not passing the correct flags to FFMPEG.

  


  VTT EXAMPLE FILE (i.e. subtitle.vtt) :

  


  WEBVTT

00:00:00.000 --> 00:00:03.000 line:-1 align:right
TESTING 1

00:00:04.000 --> 00:00:08.000 line:-1 align:right
TESTING 2


  


  FFMPEG CLI :

  


  ffmpeg -y -i video.mp4 -i subtitle.vtt -c copy -c:s mov_text vttout.mp4


  


  Test Cases :

  


  

  1. Playing MP4 video in VLC and manually loading the webvtt subtitles -> position is correct.

  


  2. Passing MP4 video through FFMPEG to soft embed the subtitles in container and then playing in VLC -> subtitles are present but position is ignored.

  


  


• How to add Title in video by ffmpeg on Node JS

  22 juin 2015, par Nazmul Hossain Bilash

  I am working on a project where I have to add Title on a video by FFmpeg. I have already succeeded in adding a picture on a video. Can anybody help me to add Text(Title) on a video ?

  Here is my code for adding Image, please suggest the required modification :

      try {
  
          var process = new ffmpeg('public/'+req.body.video);
  
          process.then(function (video) {
  
            console.log('The video is ready to be processed');
  
            var watermarkPath = 'public/images/logo.png',
  
              newFilepath = 'public/videos/watermarked/'+name,
  
              settings = {
  
                  position        : "SC"      // Position: NE NC NW SE SC SW C CE CW
  
                , margin_nord     : null      // Margin nord
  
                , margin_sud      : null      // Margin sud
  
                , margin_east     : null      // Margin east
  
                , margin_west     : null      // Margin west
  
              };
  
            var callback = function (error, files) {
  
              if(error){
  
                console.log('ERROR: ', error);
  
              }
  
              else{
  
                console.log('TERMINOU', files);
  
                res.send('videos/watermarked/'+name)
  
              }
  
            }
  
            //add watermark
  
            video.fnAddWatermark(watermarkPath, newFilepath, settings, callback)
  
  
  
          }, function (err) {
  
            console.log('Error: ' + err);
  
          });
  
        } catch (e) {
  
          console.log(e.code);
  
          console.log(e.msg);
  
        }

• How to add Title in video by ffmpeg on Node JS

  30 juin 2024, par Md Nazmul Hossain

  I am working on a project where I have to add Title on a video by FFmpeg. I have already succeeded in adding a picture on a video. Can anybody help me to add Text(Title) on a video ?

  



  Here is my code for adding Image, please suggest the required modification :

  



      try {
        var process = new ffmpeg('public/'+req.body.video);
        process.then(function (video) {
          console.log('The video is ready to be processed');
          var watermarkPath = 'public/images/logo.png',
            newFilepath = 'public/videos/watermarked/'+name,
            settings = {
                position        : "SC"      // Position: NE NC NW SE SC SW C CE CW
              , margin_nord     : null      // Margin nord
              , margin_sud      : null      // Margin sud
              , margin_east     : null      // Margin east
              , margin_west     : null      // Margin west
            };
          var callback = function (error, files) {
            if(error){
              console.log('ERROR: ', error);
            }
            else{
              console.log('TERMINOU', files);
              res.send('videos/watermarked/'+name)
            }
          }
          //add watermark
          video.fnAddWatermark(watermarkPath, newFilepath, settings, callback)

        }, function (err) {
          console.log('Error: ' + err);
        });
      } catch (e) {
        console.log(e.code);
        console.log(e.msg);
      }