Recherche avancée

Sur d’autres sites (5487)

• How to play multiple video on top of each other with ffmpeg c programming

  13 septembre 2016, par Tom Goldberg

  I’m trying to develop a code which can plays multiple videos simultaneously with ffmpeg.
  I need to play a video on a 2x2 matrix background and another video in the top left corner of it.
  Problem : The top left corner video is flicking and not stable enough.
  top-left video is flicking while playing
  code :

  SDL_Surface *screen = SDL_SetVideoMode(640, 480, 24, 0);
  
  void video_display(VideoState *is) {
  
    SDL_Rect rect;
  
    VideoPicture *vp;
  
    int w, h, x, y;
  
    h = screen->h;
  
    w = ((int)rint(h * aspect_ratio)) ;
  
    if(w > screen->w) {
  
      w = screen->w;
  
      h = ((int)rint(w / aspect_ratio)) ;
  
    }
  
  
  
    rect.x = (screen->w - w) / 2;
  
    rect.y = (screen->h - h) / 2;
  
  
  
    if(  is->video_id == 0 ){
  
       rect.w = w;
  
       rect.h = h;
  
       SDL_DisplayYUVOverlay(vp->bmp, &rect); // i think the problem is over here
  
    }
  
    else if( is->video_id == 1 ){
  
       rect.w = w/2;
  
       rect.h = h/2;
  
       SDL_DisplayYUVOverlay(vp->bmp, &rect);
  
    }  

  When i choose 0/1, i move between audio only.
  My question is : What should i code in order to make the top-left video stable to view ?

• How to Play Video using FFMpeg with Qt5 ?

  24 mai 2013, par user2311434

  I have downloaded the ffmpeg libraries, include and dll from ffmpeg website for windows 32 bit system.

  Until now i have gathered information that the below two headers are useful for playing videos, but actually I dont know.

  libavcodec/avcodec.h
libavformat/avformat.h

• Discord Bot Audio wont play

  13 décembre 2016, par Dom

  Im trying to get a dicord bot to play a simple mp3 saved locally.
  Ive followed
  https://github.com/Chikachi/DiscordIntegration/wiki/How-to-get-a-token-and-channel-ID-for-Discord
  On how to authenticate my bot and used
  https://izy521.gitbooks.io/discord-io/content/Methods/Handling_audio.html
  for the code to follow. My bot joins the voice channel but will not play the mp3 file. I know it finds the file and have downloaded and pathed ffmpeg, but have no idea what else may be causing the issue. Any help with be appreciated

  var Discord = require('discord.io');
  
  var Lame = require('lame');
  
  var fs = require('fs');
  
  var spawn = require('child_process').spawn;
  
  var bot = new Discord.Client({
  
      autorun: true,
  
      token: "#"
  
  });
  
  
  
  var voiceChannelID = "#",
  
      file = "Nonsense.mp3";
  
  
  
  bot.on('ready', function() {
  
      console.log(bot.username + " - (" + bot.id + ")");
  
      bot.joinVoiceChannel(voiceChannelID, function(error, events) {
  
        //Check to see if any errors happen while joining.
  
        if (error) return console.error(error);
  
  
  
        //Then get the audio context
  
        bot.getAudioContext(voiceChannelID, function(error, stream) {
  
          //Once again, check to see if any errors exist
  
          if (error) return console.error(error);
  
  
  
          //Create a stream to your file and pipe it to the stream
  
          //Without {end: false}, it would close up the stream, so make sure to include that.
  
          fs.createReadStream(file).pipe(stream, {end: false});
  
              console.log(stream);
  
          //The stream fires `done` when it's got nothing else to send to Discord.
  
          stream.on('done', function() {
  
             //Handle
  
          });
  
        });
  
      });
  
  });