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• How to access uploaded file from multer ?

  13 avril 2017, par Somename

  Im able to upload an image to S3. Now, if the file selected is .gif, I want to be able to convert the .gif file to .mp4 and upload the converted file to S3. I am able to convert a .gif to .mp4 with ffmpeg only if I give the path of the file. How do I access the uploaded file from Multer ? Below is my code :

  var express = require('express');
  
  var bodyParser = require('body-parser');
  
  var app = express();
  
  var aws = require('aws-sdk');
  
  var multer = require('multer');
  
  var multerS3 = require('multer-s3');
  
  var s3 = new aws.S3();
  
  var ffmpeg = require('fluent-ffmpeg');
  
  
  
  
  
  var upload = multer({
  
      storage: multerS3({
  
          s3: s3,
  
          bucket: 'myBucket',
  
          key: function (req, file, cb) {
  
              console.log(file);
  
              var extension = file.originalname.substring(file.originalname.lastIndexOf('.')+1).toLowerCase();
  
  
  
                  if(extension=="gif"){
  
                  console.log("Uploaded a .gif file");
  
  
  
                  ffmpeg(file) //THIS IS NOT WORKING
  
                      .setFfmpegPath("C:\\ffmpeg\\bin\\ffmpeg.exe")
  
                        .output('./outputs/2.mp4')    //TRYING TO UPLOAD LOCALLY, WHICH FAILS
  
                        .on('end', function() {
  
                          console.log('Finished processing');
  
                        })
  
                        .run();
  
              }
  
  
  
              cb(null, filename);
  
          }
  
      })
  
  });

  I’m trying to access the uploaded file like this : ffmpeg(file) since file is an argument passed in the multer function.

  My form :

  <form action="/upload" method="post" enctype="multipart/form-data">
  
      <input type="file" /> <br />
  
      <input type="submit" value="Upload" />
  
  </form>

  In which part of the process do I convert the file ?

  Please help. Many thanks.

• ffmpeg and php using ajax javascript

  16 juillet 2014, par user3789242

  I want to make use of ffmpeg for converting an audio file from wav to pcm.upon searching I know that there is a command line to be executed in the php form,and that I need an ajax to execute that command line.but I don’t know what to write in the ajax form nor in the php page.I only know that this is the command line used to convert from wav to pcm

  ffmpeg -i file.wav -f s16be -ar 8000 -acodec pcm_s16be file.raw

  can please somebody help me build my ffmpeg php file and its ajax.thank you in advance.note that i’m very new in ffmpeg

• How to upload dynamically generated video thumbnails as a BLOB into MySQL database in PHP

  26 novembre 2015, par Parthapratim Neog

  Here is the code that has been used to create a thumbnail of a uploaded video. The thumbnail is automatically generated successfully, but now, I want to store that thumbnail as a BLOB in the Database.
  I know how to upload an image as a BLOB using form posts, but there is no form posts involved in this.

  Could someone guide me through this ?

   
  
  
  
  
  
   <form action="index.php" method="POST" enctype="multipart/form-data">
  
    <input type="file" />
  
    <input type="submit" value="Upload" />
  
   </form>
  
   &lt;?php
  
   if(isset($_POST['submit'])){
  
    /*
  
    -i input file name
  
    -an Disabled audio
  
    -ss Get image from x seconds in the video
  
    -s  size of the image
  
    */
  
    //Get one thumbnail from the video
  
    $ffmpeg = "C:\\ffmpeg\\bin\\ffmpeg";
  
    //echo $ffmpeg;
  
    $videoFile = $_FILES["file"]["tmp_name"];
  
    $imageFile = "1.jpg";
  
    $size = "120x90";
  
    $getFromSecond = 5;
  
  
  
    //echo "<pre>"; print_r($_FILES); die;
  
    //echo "video location: ",$videoFile,"<br />";
  
    echo $cmd = "$ffmpeg -i $videoFile -an -ss $getFromSecond -s $size $imageFile";
  
  
  
    echo "<br />";
  
    if(!shell_exec($cmd)){
  
     echo "Thumbnail Created!";
  
    }else{
  
     echo "Error creating Thumbnail";
  
    }
  
  
  
    /*// Get multiple thumbnails from one video
  
    $ffmpeg = "C:\\ffmpeg\\bin\\ffmpeg";
  
    $videoFile = $_FILES["file"]["tmp_name"];
  
    $size = "120x90";
  
    for($num =1; $num&lt;=3; $num++){
  
     $interval = $num * 3;
  
     shell_exec("$ffmpeg -i $videoFile -an -ss $interval -s $size $num.jpg");
  
     echo "Thumbnail Created!- $num.jpg<br />";
  
    }
  
    echo "<br />$num thumbnails Created!";
  
    */
  
   } 
  
   ?>
  
  
  
  
  
  </pre>