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• Call system package with Go on App Engine Standard

  8 novembre 2019, par reidreid46

  I’m trying to use FFmpeg in a Go application thats running on Google App Engine Standard. I can get this to run locally, when I point to a local instance of the FFmpeg binary using exec.Command()

  cmd := exec.Command(
  
      "/Users/justin/Desktop/conversion/ffmpeg", // this won't work on a remote server
  
      "-i", "pipe:0",
  
      "-ac", "1",
  
      "-codec:a", "libmp3lame",
  
      "-b:a", "48k",
  
      "-ar", "24000",
  
      "-f", "mp3",
  
      "pipe:1",
  
    )
  
  
  
    cmd.Stdin = bytes.NewReader(synthResp.AudioContent)
  
  
  
    var output bytes.Buffer
  
    cmd.Stdout = &output
  
    err = cmd.Run()

  Obviously, this won’t work when I deploy the application, so I need a way to point to a hosted version of the FFmpeg binary. It seems ffmpeg is a system package for the go1.11 App Engine Standard environment.

  What are "System packages" and how do I use them ?
  When I look for documentation, I find a lot of documentation on apt-get, and no documentation on how to use them, App Engine or otherwise. Do I need to install it, or should it already be part of the container(?) that App Engine is running ?

  Do I call it, like I’d call other executables ? If so, that I’d expect this to work, but it doesn’t

  cmd := exec.Command(
  
      "ffmpeg", // <------ what should this be?
  
      "-i", "pipe:0",
  
      "-ac", "1",
  
      "-codec:a", "libmp3lame",
  
      "-b:a", "48k",
  
      "-ar", "24000",
  
      "-f", "mp3",
  
      "pipe:1",
  
    )
  
  
  
    cmd.Stdin = bytes.NewReader(synthResp.AudioContent)
  
  
  
    var output bytes.Buffer
  
    cmd.Stdout = &output
  
    err = cmd.Run()

  Logging err, I see exec: "ffmpeg": executable file not found in $PATH

• Discord.js Music bot "TypeError" when playing audio with dispatcher

  21 février 2020, par Cole Perry

  I’m new to Discord.js and I’m trying to have the bot join a voice channel and play an audio file on my computer. I have been following this guide : https://discord.js.org/#/docs/main/stable/topics/voice . Here is the Index.js page :

  Colesbot.on('message', message=>{
  
      if (message.content === '/join') {
  
          // Only try to join the sender's voice channel if they are in one themselves
  
          if (message.member.voiceChannel) {
  
              message.member.voiceChannel.join().then(connection => {
  
                  message.reply('I have successfully connected to the channel!');
  
  
  
                  // To play a file, we need to give an absolute path to it
  
                  const dispatcher = connection.playFile('C:\Users\bobal\Documents\GitHub\Spotify-Playlist-Discord-bot\Assets\Glory.mp3');
  
  
  
                  dispatcher.on('end', () => {
  
                      // The song has finished
  
                      console.log('Finished playing!');
  
                    });
  
  
  
                  dispatcher.on('error', e => {
  
                      // Catch any errors that may arise
  
                      console.log(e);
  
                    });
  
  
  
                    dispatcher.setVolume(0.5); // Set the volume to 50%
  
              }).catch(console.log);
  
      } else {
  
          message.reply('You need to join a voice channel first!');
  
        }
  
      }
  
   });
  
  exports.run = (client, message, args) => {
  
      let user = message.mentions.users.first || message.author;
  
  }

  FFMPEG is installed and I have set the environment path for it. When I type FFMPEG in the command line I get the proper response.

  Some have said I need to install the ffmpeg binaries but when I run npm install ffmpeg-binaries I get an error message that is here

  So then I tried installing an older version and I’m now using ffmpeg-binaries@3.2.2-3 but when I type /join I get the error

  [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received type object

• php-fpm freeze user session on ffmpeg exec

  21 janvier 2014, par aya

  I'm have some problem with php-fpm and ffmpeg.

  If i'm launching encoding from php just with simple exec, then for this certain user who initiate encoding all other php responses seems like a frozen(timeout or ignored). So for this user site becomes fully unresponsable.

  If i'm launching encoding from php but with "&" on the end of command, then all comes fine, encoding still eats cpu but site fully responsible for user.

  So maybe there is some docs or info about this behavior so i'm can get why it work this way, so where exactly it gets stuck.

  Thank you