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• How to prepare media stream to play using dash.js web player ?

  7 avril 2016, par Paweł Tobiszewski

  I want to stream media from nginx server to Android device and play it using web player embedded into web page. Player I want to use is dash.js.
  I play the same media also using different methods (MediaPlayer and ExoPlayer) and they are working great. But when I try to use dash.js, I faced problem with codecs - they are not supported.
  I prepare my streams using ffmpeg and MP4Box, I also tried different codecs, like libx264, x264, x265 - always with the same effect.
  My based media are video in Y4M format and audio in WAV.
  How to encode it to use it in dash.js player ?

  EDIT :
  I get error "Video Element Error : MEDIA_ERR_DECODE" while trying to decode video stream.

  Here is full log :

  [16] EME detected on this user agent! (ProtectionModel_21Jan2015) 
  
  [19] Playback Initialized 
  
  [28] [dash.js 2.0.0] MediaPlayer has been initialized 
  
  [102] Parsing complete: ( xml2json: 3ms, objectiron: 3ms, total: 0.006s) 
  
  [103] Manifest has been refreshed at Thu Apr 07 2016 22:02:52 GMT+0200 (CEST)[1460059372.696]  
  
  [107] SegmentTimeline detected using calculated Live Edge Time 
  
  [118] MediaSource is open! 
  
  [118] [object Event] 
  
  [119] Duration successfully set to: 18.58 
  
  [119] Added 0 inline events 
  
  [120] video codec: video/mp4;codecs="avc1.640032" 
  
  [132] Schedule controller stopping for video 
  
  [137] No audio data. 
  
  [137] No text data. 
  
  [137] No fragmentedText data. 
  
  [137] No embeddedText data. 
  
  [138] No muxed data. 
  
  [139] Start Event Controller 
  
  [141] Schedule controller starting for video 
  
  [143] Native video element event: play 
  
  [144] Schedule controller starting for video 
  
  [148] loaded video:InitializationSegment:NaN (200, 0ms, 7ms) 
  
  [149] Initialization finished loading 
  
  [154] Getting the request for video time : 0 
  
  [155] SegmentList: 0 / 18.58 
  
  [164] loaded video:MediaSegment:0 (200, 7ms, 1ms) 
  
  [169] Native video element event: loadedmetadata 
  
  [171] Starting playback at offset: 0 
  
  [175] Got enough buffer to start. 
  
  [175] Buffered Range: 0 - 0.999999 
  
  [179] Requesting seek to time: 0 
  
  [181] Prior to making a request for time, NextFragmentRequestRule is aligning index handler's currentTime with bufferedRange.end. 0  was changed to  0.999999 
  
  [182] Getting the request for video time : 0.999999 
  
  [183] SegmentList: 0 / 18.58 
  
  [183] Getting the next request at index: 1 
  
  [184] SegmentList: 1 / 18.58 
  
  [190] loaded video:MediaSegment:1 (200, 5ms, 0ms) 
  
  [192] Buffered Range: 0 - 0.999999 
  
  [195] Getting the request for video time : 2 
  
  [196] Index for video time 2 is 1 
  
  [197] SegmentList: 1 / 18.58 
  
  [197] Getting the next request at index: 2 
  
  [198] SegmentList: 2 / 18.58 
  
  [205] loaded video:MediaSegment:2 (200, 4ms, 1ms) 
  
  [207] Buffered Range: 0 - 0.999999 
  
  [207] Getting the request for video time : 3 
  
  [208] Index for video time 3 is 2 
  
  [208] SegmentList: 2 / 18.58 
  
  [209] Getting the next request at index: 3 
  
  [209] SegmentList: 3 / 18.58 
  
  [212] Video Element Error: MEDIA_ERR_DECODE 
  
  [212] [object MediaError] 
  
  [215] Schedule controller stopping for video 
  
  [219] Native video element event: pause 

• call api when video play after some duration

  29 septembre 2017, par Prakash Satani

  Is it possible to split video in some time duration and set some text when merge video again ?

  After that I want to call API when that text come on video playing.

  I did research for same but I didn’t find anything for what I want.

• 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'