Generate image ,pdf and Video Thumb using node js

      Using imagemagick Generate image thumb       

        var im = require('imagemagick');

        var image = random() + '.png';

        var imagepath = 'uploads/images_thumb/' + image;

        var pathToFile = path.join(__dirname, req.files[i].path),

            pathToSnapshot = path.join(__dirname, '/' + imagepath);

        im.resize({

            srcPath: pathToFile

              , dstPath: pathToSnapshot

              , width: 150

              , height: 150

              , quality: 0

              , gravity: "North"

        }, function (err, stdout, stderr) {

            if (err) {

                console.log(err);

            }

            console.log('resized image ', pathToSnapshot);

            //res.json(pathToSnapshot);

        });

    Using Gm Generate Pdf thumb   

     

     var gm = require('gm');

     var image = random() + '.png';

     var imagename = 'uploads/document_thumb/' + image;

     var pathToFile = path.join(__dirname, req.files[i].path),

     pathToSnapshot = path.join(__dirname, '/uploads/document_thumb/' + image);

        

     gm(pathToFile).thumb(150, // Width

                150, // Height

                pathToSnapshot, // Output file name

                40, // Quality from 0 to 100

                function (error, stdout, stderr, command) {

                    if (!error) {

                        console.log(command);

                    }

                    else {

                        console.log(error);

                    }

                });

    Using fluent-ffmpeg Generate Video thumb 

    

    var ffmpeg = require('fluent-ffmpeg');

     var image = random() + '.png';

     var imagepath = 'uploads/video_thumb/' + image;

     var pathToFile = path.join(__dirname, req.files[i].path),

     pathToSnapshot = path.join(__dirname, '/uploads/video_thumb/', image);

     

require('child_process').exec(('ffmpeg -ss 00:00:2 -i ' + pathToFile + ' -vframes 1 -q:v 2 ' + pathToSnapshot), function (err) {

                    //console.log(err);

                    //console.log('Saved the thumb to:', pathToSnapshot);

                });