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• How to upload and overlay animation.html file from system and overlay over video in HTML or ANGULAR

  23 septembre 2020, par Hiren

  Hey I am trying to build an app which has a functionality of allowing a user to upload a pre-existing .HTML file from his system which contains a simple animation init

  


  I want to get that file and overlay the animation contained in .HTML file on my video and display it to the user.

  


  is that possible please help me if it is.

  


  


  


  body {
  background: #;
}

#fullScreenBox {
  height: 500px;
  width: 50%;
  background: #;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

#hiddenBox {
  width: 50%;
  height: 500px;
  background: #;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  overflow: hidden;
}

#title {
  width: 100%;
  height: 150px;
  background: #;
  /*U can also use #*/
  position: absolute;
  top: 200px;
  font-family: arial;
  font-size: 50px;
  color: white;
  text-align: center;
  opacity: 0;
}

#subtitle {
  width: 100%;
  height: 50px;
  background: #;
  /*U can also use #*/
  position: absolute;
  top: 300px;
  font-family: arial;
  font-size: 50px;
  color: red;
  text-align: center;
  opacity: 0;
}

#line01 {
  width: 25%;
  height: 4px;
  background: white;
  /*U can also use #*/
  position: absolute;
  top: 50px;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  color: white;
  opacity: 0;
}

#overlay {
  position: absolute;
  color: #FFF;
  text-align: center;
  font-size: 20px;
  padding: 10px 0;
  width: 50%;
  height: 500px;
  background: #;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

#v {
  height: 500px;
  width: 100%;
}

  


  &#xA;&#xA;  <div>&#xA;    <div class="">&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;        LONDON&#xA;      </div>&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;&#xA;      </div>&#xA;&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;        City of Dreams!&#xA;      </div>&#xA;    </div>&#xA;</div>

  


  


  



  This is my HTML file that contains a simple animation for example which is in user system

  


  In my application when user upload this file i want to overlay the animation contained in this file on the video as he uploads it is these any way
Thank you

  


• How can I add a random watermark to a video during processing in Node.js and Express.js using FFmpeg ?

  3 avril 2023, par Ariful islam

  I want to add a watermark to a video that changes randomly during processing. I am using Node.js and Express.js with FFmpeg. Currently, I am able to add a static watermark to the video using the drawtext filter. However, I want to change the watermark text randomly every few seconds.

  


  How can I achieve this using FFmpeg in my Node.js and Express.js app ? Here's my current code :

  


  const email = 'name@gmail.com';
app.post('/addwatermark', upload.single('video'), (req, res) => {
const fileName = path.basename(req.file.path) + '.mp4';
const outputPath = `public/reduceSize/${fileName}`;
const outputPathWithWatermark = `public/reduceSize/${fileName}-wm.mp4`;
let watermarkPosition = { x: 10, y: 650 };

// Create the directory if it doesn't exist
const outputDir = path.dirname(outputPathWithWatermark);
if (!fs.existsSync(outputDir)) {
    fs.mkdirSync(outputDir, { recursive: true });
}

// Send a comment to keep the connection alive
res.write(': ping\n\n');

// Function to randomly generate watermark position
const changeWatermarkPosition = () => {
    watermarkPosition = { x: Math.floor(Math.random() * 100), y: Math.floor(Math.random() * 100) };
};

// Change watermark position every 5 seconds 
setInterval(changeWatermarkPosition, 5000);
const watermarkStyle = `-vf drawtext=text='${email}':x=(w-text_w-10):y=(h-text_h-10):fontcolor=white:fontsize=24:shadowcolor=black:shadowx=1:shadowy=1:box=1:y=${watermarkPosition.y}:fontcolor=red:fontsize=24:shadowcolor=black:shadowx=1:shadowy=1:box=1:boxcolor=black@0.5`

ffmpeg(req.file.path)
    .addOption(watermarkStyle)
    .output(outputPathWithWatermark)
    .videoCodec('libx264')
    .audioCodec('aac')
    .size('50%')
    .on('error', (err) => {
        console.error(`FFmpeg error: ${err.message}`);
        res.status(500).json({ message: err.message });
    })
    .on('progress', (progress) => {
        // Set the watermark position every 5 seconds randomly
        changeWatermarkPosition();

        const mb = progress.targetSize / 1024;
        const data = {
            message: `Processing: ${mb.toFixed(2)} MB converted`,
            watermark: `Adding watermark to video: ${progress.framesProcessed} frames processed`
        };
        console.log(data.message);
        res.write(`data: ${JSON.stringify(data)}\n\n`);

    })
    .on('end', () => {
        console.log(`Video successfully converted to ${outputPathWithWatermark}`);
        // Remove the temporary file
    })
    .run();
 });


  


  I want to secure my video from unauthorized person by using email in a video and the email will be move around the video randomly every 5 seconds.

  


  I have read this (Add dynamic watermark that randomly changes position over video React/Node) document but didn't get any solution.

  


• Can not add images after add background to audio

  16 mars 2017, par Thanh Dao

  I use below command to concat background to an audio file :

  "ffmpeg" -i /path/to/image.png -i /path/to/audio.mp3 -vsync vfr -pix_fmt yuv420p /path/to/video-1.mp4 2>&1

  Next, I use that command to add other images to created video :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/video-1.mp4 /path/to/video-2.mp4 2>&1

  Content of my text.txt file :

  /path/to/img1.jpg
  
  duration 6
  
  /path/to/img2.jpg
  
  duration 6
  
  /path/to/img3.jpg
  
  duration 6
  
  /path/to/img4.jpg
  
  duration 6

  Obtained video display only background image. Other images have not been shown.

  What are my wrong in these commands ? And how to set the display position of other images in video ? To display images by position, I use below command, but after it ran, my machine was crashed :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/video-1.mp4 -filter_complex "overlay=0:0, scale=640:640" /path/to/video-2.mp4 2>&1

  Update :

  I do follow order by below steps and got video with text and images, but the position is incorrect. I can’t find any solution for custom :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/audio.mp3 -vsync vfr -pix_fmt yuv420p /path/to/tmp-video-1.mp4 2>&1
  
  
  
  "ffmpeg" -i /path/to/background.png -i /path/to/tmp-video-1.mp4 -filter_complex "overlay=0:0" /path/to/tmp-video-2.mp4 2>&1
  
  
  
  "ffmpeg" -i /path/to/tmp-video-2.mp4 -vf "[in]<define texts="texts" and="and" duration="duration">[out]" -codec:a copy /path/to/endvideo.mp4 2>&amp;1
  
  </define>

  Please take a look my video : http://184.171.170.45/cron/tmp/funny-1489648654.mp4
  I tried to set overlay property in second command : -640:0, let images in horizontal center of background, but its not working