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• Setup FFMpegCore in Visual Studio 2019

  27 juillet 2022, par DsiakMondala

  I am confused on the basics of using a library. I understand that there is a library called FFMpeg and a wrapper called FFMpegCore so we can use FFMpeg with C#, correct ? I downloaded both FFMpeg and FFMpegCore and I have them in my project's folder. Although I didn't perceive any class named FFMpegOptions in either of the file's folders.
I am stuck on how to actually set it up so I can use it in my little project, I never downloaded someone's library before. Can somebody please walk me though the motions of connecting the three of them together ?

  


  So far I experimented with :

  


  

  • Add a reference to my project, but there doesn't seem to be any .dll, .tlb, .olb, .ocx or .exe files to add

  


  • Add an existing project to my solution. There is a project called FFMpegCore.csproj but adding it raises a missing SDK error. Weirdly enough, opening the same project as a standalone doesn't raise any issues which makes me thing the operation I am trying is inadequate.

  


  


  I am sure this is a silly and easy setup to perform but I just don't know enough to find a solution.

  


• FFMPEG for Android - missing alsa format

  24 août 2012, par user1545779

  @rowntreerob has an android-ffmpeg implementation that build successfully using the default file settings.

  When you remove disble-avdevice and disbale-devices from the configure_ffmpeg script, ndk-build fails. The following is the error message :

  CP ffmpeg
  STRIP ffmpeg
   /android-ffmpeg/Project/jni
   /android-ffmpeg/Project/jni
   /android-ffmpeg/Project/jni
  jasongipsyblues@android-master : /android-ffmpeg/Project/jni$ ndk-build
  Compile thumb : ffmpeg <= ffmpeg.c
  Compile thumb : ffmpeg <= cmdutils.c
  Executable : ffmpeg
  /home/jasongipsyblues/android-ffmpeg/Project/obj/local/armeabi- >v7a/objs/ffmpeg/ffmpeg/ffmpeg.o : In function `main' :

  /home/jasongipsyblues/android-ffmpeg/Project/jni/ffmpeg/ffmpeg.c:6130 : undefined >reference to `avdevice_register_all'
  

  /home/jasongipsyblues/android-ffmpeg/Project/obj/local/armeabi- >v7a/objs/ffmpeg/ffmpeg/cmdutils.o : In function `print_all_libs_info' :

  /home/jasongipsyblues/android-ffmpeg/Project/jni/ffmpeg/cmdutils.c:639 : undefined >reference to `avdevice_configuration'

  /home/jasongipsyblues/android-ffmpeg/Project/jni/ffmpeg/cmdutils.c:639 : undefined >reference to `avdevice_version'
  
  collect2 : ld returned 1 exit status

  make : ** [/home/jasongipsyblues/android-ffmpeg/Project/obj/local/armeabi-v7a/ffmpeg] >Error 1

  Please pardon my poor formating skills, I still dont get the formating thing. It appears the deletion of the references is to avdevices is definitely affecting the use of ndk-build.

  All the alsa source files exist in the ffmpeg code. How does one build ffmpeg in such a way that alsa is included in the formats ?

• Console Log Stream information using ffmpeg node.js

  5 mars 2019, par Matteo

  I have created a work application that links in room encoders to live stream onto Facebook, Twitter and Youtube. I am wondering as to how to properly log the stream quality on the CMD. Below are snippets of the code and where I think the logic should be to properly pull the stream quality and display it in the cmd :

  Pushing Stream :

      if (req.query.french_facebook) {
  
    var streamComplete = req.query.fb_fre_streamURL + req.query.fb_fre_streamKey;
  
    temp = checkValidity('Facebook', 'French', req.query.fb_fre_streamURL, req.query.fb_fre_streamKey, status);
  
    status = temp[0];
  
    valid = temp[1];
  
    if (valid == true) {
  
      var command = `ffmpeg -re -i ${inputURL2('French',req.query.fb_fre_venue)} -c:v copy -acodec aac -ac 1 -ar 44100 -x264-params keyint=60:scenecut=0 -strict -2 -f flv "${streamComplete}"`;
  
      var process = nodeCmd.run(command);
  
      createStream(req.query.username, 'Facebook', 'French', req.query.fb_fre_streamKey, process.pid);
  
    } else {
  
      console.error("ERROR: unable to create stream");
  
    }
  
  }

  App initialization :

      var createError = require('http-errors');
  
  var express = require('express');
  
  var path = require('path');
  
  var cookieParser = require('cookie-parser');
  
  var logger = require('morgan');
  
  
  
  var indexRouter = require('./routes/index');
  
  var usersRouter = require('./routes/users');
  
  
  
  var app = express();
  
  
  
  var fs = require('fs');
  
  
  
  // view engine setup
  
  app.set('views', path.join(__dirname, 'views'));
  
  app.set('view engine', 'ejs');
  
  
  
  // app.use(logger('dev'));
  
  app.use(express.json());
  
  app.use(express.urlencoded({ extended: false }));
  
  app.use(cookieParser());
  
  app.use(express.static(path.join(__dirname, 'public')));
  
  
  
  app.use('/', indexRouter);
  
  app.use('/users', usersRouter);
  
  
  
  // catch 404 and forward to error handler
  
  app.use(function(req, res, next) {
  
    next(createError(404));
  
  });
  
  
  
  // error handler
  
  app.use(function(err, req, res, next) {
  
    // set locals, only providing error in development
  
    res.locals.message = err.message;
  
    res.locals.error = req.app.get('env') === 'development' ? err : {};
  
  
  
    // render the error page
  
    res.status(err.status || 500);
  
    res.render('error');
  
  });
  
  
  
  module.exports = app;

  If there is anything I am not making clear please let me know