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• FFMPEG : how to take 3000 snapshots faster ?

  28 septembre 2024, par Valuex

  I've got a video with the length of 200 minutes.
  
And also got the timestamp for each snapshot that will be taken.
  
I've tried to use ffmpeg to take snapshot with following commands.
  
However, it is very slow, and takes about 10 seconds for each snapshot.
  
Is there any way that can speed up ? Thanks.

  


  OS : win10 ; PC : Intel NUC8i5

  


  


  ffmpeg -i 1.mp4 -ss 00:00:04 -vframes 1 000004.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:08 -vframes 1 000008.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:12 -vframes 1 000012.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:16 -vframes 1 000016.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:17 -vframes 1 000017.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:20 -vframes 1 000020.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:24 -vframes 1 000024.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:26 -vframes 1 000026.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:28 -vframes 1 000028.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:32 -vframes 1 000032.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:36 -vframes 1 000036.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:38 -vframes 1 000038.jpg
  
ffmpeg -i 1.mp4 -ss 00:00:43 -vframes 1 000043.jpg

  


  


• POST http://localhost:3000/api/video/thumbnail 500 (Internal Server Error) MongoDB and FFmpeg

  5 juillet 2022, par VoicedCreator

  I am trying to insert a thumbnail on my page using POST and im getting this error
I want to screenshot a video using FFmpeg

  


  const express = require('express');
const router = express.Router();
const multer = require('multer');
var ffmpeg = require('fluent-ffmpeg');
const { User } = require("../models/User");

const { auth } = require("../middleware/auth");
const storage = multer.diskStorage({
    destination: function (req, file, cb) {
      cb(null, 'uploads/')
    },
    filename: function (req, file, cb) {
      cb(null, `${Date.now()}_${file.originalname}`)
    },
    fileFilter: (req, file, cb) => {
        const ext = path.extname(file.originalname);
        if(ext !== '.mp4' || ext !== '.mov' || ext !== '.wmv'){
            return cb(res.status(400).end('Solo archivos mp4-mov-wmv son aceptados'), false);
        }
        cb(null, true)
    }
  })
  
  const upload = multer({ storage: storage }).single("file")


//=================================
//             User
//=================================

router.post("/uploadfiles", (req, res) => {

    upload(req, res, err => {
        if(err) {
            return res.json({ success: false, err })
        }
        return res.json({ success: true, filePath: res.req.file.path, fileName: res.req.file.filename })
    })

});

router.post("/thumbnail", (req, res) => {


    let filePath = ""
    let fileDuration = ""


    ffmpeg.ffprobe(req.body.url, function (err, metadata) {
        console.dir(metadata); // all metadata
        console.log(metadata.format.duration);
        console.log(metadata) 
        fileDuration = metadata.format.duration
    });


    ffmpeg(req.body.url)
        .on('filenames', function (filenames) {
            console.log('Will generate ' + filenames.join(', '))
            console.log(filenames)


            filePath = "uploads/thumbnails/" + filenames[0]
        })
        .on('end', function () {
            console.log('Screenshots taken');
            return res.json({ success: true, url: filePath, fileName: filenames, fileDuration: fileDuration });
        })
        .on('error', function (err) {
            console.error(err);
            return res.json({ success: false, err });
        })
        .screenshots({
            // Will take screenshots at 20%, 40%, 60% and 80% of the video
            count: 3,
            folder: 'uploads/thumbnails',
            size: '320x240',
            //'%b': input basename (filename w/o extension)
            filename: 'thumbnail-%b.png'
        })
});




router.post("/thumbnail", (req, res) => {


    let filePath = ""
    let fileDuration = ""


    ffmpeg(req.body.url)
        .on('filenames', function (filenames) {
            console.log('Will generate ' + filenames.join(', '))
            console.log(filenames)


            filePath = "uploads/thumbnails/" + filenames[0]
        })
        .on('end', function () {
            console.log('Screenshots taken');
            return res.json({ success: true, url: filePath, fileName: filenames, fileDuration: fileDuration });
        })
        .on('error', function (err) {
            console.error(err);
            return res.json({ success: false, err });
        })
        .screenshots({
            // Will take screenshots at 20%, 40%, 60% and 80% of the video
            count: 3,
            folder: 'uploads/thumbnails',
            size: '320x240',
            //'%b': input basename (filename w/o extension)
            filename: 'thumbnail-%b.png'
        })
});



module.exports = router;


  


  Error : POST http://localhost:3000/api/video/thumbnail 500 (Internal Server Error)
TypeError : Cannot read properties of undefined (reading 'format')

  


  I think is because ffmpeg is not connecting to mongodb

  


• Evolution #2050 : site vide au début

  10 mai 2011, par cedric -

  voir aussi #2056