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• 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

  


• avcodec/wnv1 : Move temporary variables from context to stack

  29 août 2020, par Andreas Rheinhardt

  avcodec/wnv1 : Move temporary variables from context to stack
  Here it even leads to the complete removal of the context.
  Reviewed-by : Paul B Mahol <onemda@gmail.com>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavcodec/wnv1.c

• mp4 video on Android

  9 février 2016, par matthewbaskey

  I wanted to convert some old Flash videos to 1 video format so the content will show on a mobile phone. I got some mp4 and it doesn’t work on Android, specifically Chrome 32 running on Android 4.3.

  Click this link to a fiddle

  It is loading the mp4 file on Chrome 32 on Android 4.3, but I thought there is no support for H.256

  Then I went to a this site http://techslides.com/sample-webm-ogg-and-mp4-video-files-for-html5/

  and the mp4 video there works on Android/Chrome.

  I used VLC to check the codecs and they look the same

  H264 - MPEG-4 AVC (part 10) (avc1)
  
  Resolution: is different (working one is 560x320
  
  Resolution: mp4 not working is 640x480
  
  Framerate: working is 30, not working is 12
  
  Decoded format: Planar4:2:0 YUV

  I then searched the codec then with ffmpeg and I see that
  there is a property called
  compatible_brands : mp42icomavc1

  which is different than the non-working mp4 which has this property set to
  compatible : mp42mp41

  The file sizes are quite different as well. Could this be an issue.

  When I load http://html5test.com the Chrome on Android browser says MPEG-4 is not supported by H.264 is. it doesn’t say anything about the container.

  ok here is some source code, I thought chrome on android doesn’t support mp4 files, but when I load the following on Chrome 32 running on Sony Xperia Tablet running Android 4.3. I had an mp4 file that I converted to webm, but chrome still could not run it. It is 8 MB so perhaps the size is an issue....this mp4 has a different size and frameframe. Other than that I only see compatible version different as mentioned above.

      
  
  
  
  
  
      <h4>This is mp4 video</h4>
  
      <video controls="controls" autoplay="autoplay" preload="auto">
  
          <source src="http://techslides.com/demos/sample-videos/small.mp4" type="video/mp4">
  
      </source></video>