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• How to Convert video into mp3 using ffmpeg in nodejs and angular and save converted audio into the database

  2 septembre 2021, par Amir Shahzad

  This is nodejs server side code

  


  const express = require('express');
const ffmpeg  = require('fluent-ffmpeg');
const fileUpload = require('express-fileupload');
const mongoose = require('mongoose');
const cors   = require('cors')
const app = express();
const Video = require('./models/video');
mongoose.connect('mongodb://localhost:27017/YoutubeApp', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
});
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error'));
db.once('open', () => {
   console.log('Data Base Connected Successfully!');
});

app.use(fileUpload({
   useTempFiles: true,
   tempFileDir: 'temp/'
}));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(cors({ origin: 'http://localhost:4200' }));


ffmpeg.setFfmpegPath('/usr/bin/ffmpeg');

app.post('/mp4tomp3', (req, res) => {
const data = new Video({
     mp4: req.body.mp4
});
res.contentType('video/avi');
res.attachment('output.mp3');
req.files.mp4val.mv("temp/" + req.body, function(err) {
    if(err){
        res.sendStatus(500).send(err)
    }else{
        console.log("Fiel Uploaded Successfully.!");
    }
});
// Convertin Mp4 To Avi
ffmpeg('temp/' + req.files.mp4val.mp4)
.toFormat('mp3')
.on('end', function() {
    console.log('Done');
})
.on('error', function(err){
    console.log('An Error Occured' + err.message)
})
 .pipe(res, {end: true})
 })

 app.listen(3000, () => {
    console.log('Server Start On Port 3000')
 })


  


  Here i want to get input from the user with input tag and then want to convert video into audio and save into the database but i not know how i can do this

  


  This is video model file

  


  const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const videoSchema = new Schema({
    mp4: String,
});
module.exports = mongoose.model("Videos", videoSchema);


  


  **This is Typescript code in angular client side that handle user input and select video **

  


  import { ThrowStmt } from '@angular/compiler';
import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { VideoConversionService } from 'src/services/video-conversion.service';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {

   submitted =false;
   form! : FormGroup
   data:any

   constructor(private formBuilder: FormBuilder,
       private videoService: VideoConversionService){}

   creatForm(){
    this.form = this.formBuilder.group({
    mp4: ['', Validators.required],
  });
  }
   ngOnInit(): void {
   this.creatForm();

  }


  convertVideo(){
    this.submitted = true
    this.videoService.conversion(this.form.value).subscribe(res => {
    this.data = res;
 })
 }

 }


  


  I do not know how to create logic to do that (convert video into audio using angular framework)

  


  This is app.component.html file where i want to get video from the user using input field

  


  <div class="container">&#xA;   <h1>Video Proccessing App</h1>&#xA;   <form>&#xA;     <input type="file" formcontrolname="mp4" />&#xA;     <input type="submit" value="Convert" />&#xA;  </form>&#xA;</div>&#xA;

  


  


  But my code is not working and video is not converting into audio

  


  This is my video service file where i calling nodejs api to perform the task

  


  import { Injectable } from '@angular/core';
import { HttpClient  } from '@angular/common/http';
@Injectable({
   providedIn: 'root'
})
export class VideoConversionService {

constructor(private httpClient: HttpClient) { }

conversion(data: any){
   return this.httpClient.post('http://localhost:3000/mp4tomp3', data)
}
}


  


  Please anyone can solve my problem Thanks in advance

  


• aarch64 : Use .data.rel.ro for const data with relocations

  16 novembre 2014, par Martin Storsjö

  aarch64 : Use .data.rel.ro for const data with relocations
  This reverts commit c00365b46d464ce47716315c1801818d811bdb9a
  
  in addition to using a different section.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavcodec/aarch64/fft_neon.S
  • [DBH] libavcodec/aarch64/opus_imdct_neon.S
  • [DBH] libavutil/aarch64/asm.S

• Save WPF BitmapSources as h264 encoded video directly from Memory

  6 décembre 2016, par Daniel M

  Currently I am utilizing a List-variable to store BitmapSources provided by a camera and save them as an AVI file with the help of SharpAvi. In a second step I then encode the saved file via Nrecos ffmpeg wrapper to decrease file size. Finally I delete the original AVI file and only keep the encoded one.

  To me this seems poorly designed and might cause harmful write-cycles to the SSD the application is running on (I’ll probably create up to a TB a day in unencoded video), which is why I want to change it to a more integrated solution utilizing the PC’s RAM.
  SharpAvi as well as Nreco however rely on creating and reading actual files.
  Nreco does have the ConvertLiveMedia method that accepts a stream - however in my experiments it simply did not create a file while giving me no error warnings.