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• ffplay how to play interlaced yuv file

  16 février 2015, par Balamurugan A

  I am playing an interlaced output yuv with ffmpeg and seeing the output is stuttering.

  ffplay -v info -f rawvideo -pixel_format nv12 -video_size 720x480  data/yuvframes.yuv

  Can anyone please let me know the exact syntax for playing it properly ?

• How to implement Clear-Key video encryption in PHP and play it in HTML [closed]

  22 octobre 2018, par Ali Farhoudi

  I want to implement video encryption in php and play encrypted video in HTML5 video. I have read some documents about it :

  • https://en.wikipedia.org/wiki/Encrypted_Media_Extensions
  • https://w3c.github.io/encrypted-media/

  And I know there are alternative tools and services that I can use :

  • https://support.uplynk.com/tut_embedding_the_uplynk_player_3.html
  • https://www.wowza.com/products/capabilities/streaming-content-security
  • https://www.intertrust.com/products/drm-system/livestream/
  • https://bitmovin.com/cenc-widevine-drm/
  • https://www.html5rocks.com/en/tutorials/eme/basics/

  I want to provide like this example :

  • https://demo.castlabs.com/ (play big buck bunny smooth streaming : that can’t be downloaded and the url is one-time usable)

  What steps should I pass ?
  I use PHP (laravel) in server-side.

• Cannot play audio from a link using a Discord Bot

  2 mars 2020, par Guilhermeffable

  I’m trying to code a bot so me and my friends can hear the local radio on our Discord Server but I’m having this error.

  This is part of my code, it’s the play.js file that handles the playback stuff.

  module.exports = (client,message) => {
  
  
  
  const voiceChannel = message.member.voiceChannel;
  
  const idChannel = voiceChannel.id;
  
  
  
  console.log(idChannel)
  
      //vê se o user está numa sala de voz
  
  if(!voiceChannel) {
  
      return message.channel.send("Precisas de estar num voice channel para usar este comando.")
  
  }
  
  const permissions = voiceChannel.permissionsFor(message.client.user);
  
  
  
   //vê se tem permissões para entrar na sala
  
  if(!permissions.has('CONNECT') || !permissions.has('SPEAK')) {
  
      return message.channel.send("Não tenho permissões para entrar nessa sala.")
  
  }
  
  
  
  voiceChannel.join()
  
      .then(connection => {
  
          console.log("Successfully connected.");
  
          connection.playStream('http://centova.radios.pt:8401/stream.mp3/1')
  
  }).catch(e =>{
  
      console.error(e);
  
  
  
  });

  }

  And this is the error I’m getting :

  TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received an instance of         
  
  Object
  
  at validateString (internal/validators.js:117:11)
  
  at normalizeSpawnArguments (child_process.js:406:3)
  
  at Object.spawn (child_process.js:542:16)
  
  at new FfmpegProcess (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\prism-media\src\transcoders\ffmpeg\FfmpegProcess.js:14:33)
  
  at FfmpegTranscoder.transcode (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\prism-media\src\transcoders\ffmpeg\Ffmpeg.js:34:18)
  
  at MediaTranscoder.transcode (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\prism-media\src\transcoders\MediaTranscoder.js:27:31)
  
  at Prism.transcode (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\prism-media\src\Prism.js:13:28)
  
  at AudioPlayer.playUnknownStream (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\discord.js\src\client\voice\player\AudioPlayer.js:97:35)
  
  at VoiceConnection.playStream (C:\Users\guilh\desktop\BOT\orbitalbot\node_modules\discord.js\src\client\voice\VoiceConnection.js:546:24)
  
  at C:\Users\guilh\desktop\BOT\orbitalbot\commands\play.js:24:24 {
  
    code: 'ERR_INVALID_ARG_TYPE'