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• discord.js playing audio on multiple servers

  1er février 2021, par Poopy Doop

  I made a test test bot for discord.js using Node.js / ffmpeg, to play a radio station in a channel on discord and there are no problems there, however i was thinking about how it would stream the same station to multiple servers/channels efficiently.

  



  For example, if I am playing it on "Discord server one" :

  



  var voiceChannel = message.member.voiceChannel;
    voiceChannel.join().then(connection => {
    console.log("joined channel");
    const dispatcher = connection.playArbitraryInput('http://philae.shoutca.st:8950/live', { volume: 0.5 });

    dispatcher.on("end", end => {
      console.log("left channel");
      voiceChannel.leave();
     });
        }).catch(err => console.log(err)); 


  



  However if i want to play it on another server that my bot is a member of, do i need to create the audio stream again ?

  



  If so that kinda sux. My bot would have to encode the stream seperatly for each instance ?

  



  I would like to know if there is any way i can reuse the audio stream and restream it so that if I had my bot in 100 channels its only one download instance of the stream and 100 uploads

  



  I haope i am making sense but let me make some fake code to try help explain :

  



  lets say instead i could do something like this :

  



  let cachedAudioStream = cacheArbitraryInput('http://philae.shoutca.st:8950/live', {});


  



  then for every outgoing instance :

  



  connection1.playArbitraryInput(cachedAudioStream, { volume: 0.5 });
connection2.playArbitraryInput(cachedAudioStream, { volume: 0.8 });
connection3.playArbitraryInput(cachedAudioStream, { volume: 1 });


  



  and so on

  



  Thanks

  


• FFmpeg does not download hls stream

  26 juillet 2020, par mrlucasrib

  I am trying to download a video from an m3u8 file. I used the chrome dev tools network analyzer and copied the address from the m3u8 file.

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:6
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-KEY:METHOD=AES-128,URI="key://pi1CcgormCfrBeHFonx1SjYyNREActOy9x5fdSmTcQ74q9gDltGOMVTb2KT7jebRYJNU9skhE1wPp3VBgsIQhutzL9nlU7CwifAHVRX63E8abzo+8daPodXlUvN8qlXDKE8I2w37kc+UqyTG86U3Kg==",IV=0x157c77a2bc4ce357dfb893e2c01f8561
#EXTINF:6.0000,
https://contentplayer.website.com/video/4vqnGjj0L3/hls/360/segment-0.ts
....
#EXTINF:1.0667,
https://contentplayer.website.com/video/4vqnGjj0L3/hls/360/segment-219.ts
#EXT-X-ENDLIST 


  


  So I put in ffmpeg and got a 403 forbidden error

  


  [https @ 0x55c2fae84d80] HTTP error 403 Forbidden
[crypto @ 0x55c2fb11ebc0] Unable to open resource: https://contentplayer.website.com/video/4vqnGjj0L3/hls/540/segment-1.ts
[hls @ 0x55c2fae807c0] Failed to open segment 1 of playlist 0
...


  


  I thought it could be because of some missing http header, so I copied the cURL command from devtools. (I copied from the request of a segment, in which I had the cloudfront authorization key)

  


  I took all the headers from cURL and added them to ffmpeg.

  


  ffmpeg -allowed_extensions ALL -headers 'User-Agent: ...'
-headers 'Accept: */*' 
-headers 'Accept-Language: ...' 
-headers 'Referer: https://player....com/' 
-headers 'Origin: https://player....com' 
-headers 'Connection: keep-alive'
-headers 'Cookie: CloudFront-Policy=..; CloudFront-Signature=...; CloudFront-Key-Pair-Id=..; hotid=..; hmVlcIntegration=..' -headers 'Pragma: no-cache' -headers 'Cache-Control: no-cache' -headers 'TE: Trailers' 
-protocol_whitelist file,crypto,https,tcp,tls -i esse.m3u8  -map 0 -c copy output.mkv  -i link.m3u8  -map 0 -c copy output.mkv


  


  However, I still receive the 403 forbidden error. When I execute the cURL command it downloads the contents of the fragment. My hypothesis was that because it is about HTTP2 the headers were not sent after the first connection, but all the important headers were added.
other ways of doing this process are also welcome

  


• FFmpeg : omitting -filter_complex results in missing video in some players

  17 mai 2017, par pintxo

  I created a not so simple ffmpeg command with a complex filter to append opening/closing credits to a video. In the same process the video is resized and re-encoded. This works fine in all players I tested.

  When I leave out the -filter_complex arg and image inputs, the resulting file plays as expected in VLC but has only audio (no video) in Windows Media Player.

  This is all done on Windows 10, using a standard windows batch file.

  Any one an idea what’s going on here ? My ffmpeg foo is very limited.

  ffmpeg.exe ^
  
   -i "..\videos\film.mov" ^
  
   -y ^
  
   -codec:a aac ^
  
   -s:v 1280x720 ^
  
   -codec:v libx264 -preset slower -tune animation -crf 22 ..\videos\film.mov.m4v"
  
  
  
  ffmpeg.exe ^
  
   -i "..\videos\film.mov" ^
  
   -i OpeningCredits.de.png -i ClosingCredits.de.png ^
  
   -filter_complex "[0:v][1:v] overlay=0:0:enable='between(t,0,3.5)',drawtext=enable='between(t,0,3.5)':fontfile=fonts/Roboto-Bold.ttf:text=Test:fontcolor=white:fontsize=104:x=(w-text_w)/2:y=(h-text_h)/2+45,drawtext=enable='between(t,0,3.5)':fontfile=fonts/Roboto-Bold.ttf:text=:fontcolor=white:fontsize=104:x=(w-text_w)/2:y=(h-text_h)/2+45+text_h+20 [tmp]; [tmp][2:v] overlay=0:0:enable='between(t,39-5.2,39)'" ^
  
   -y ^
  
   -codec:a aac ^
  
   -s:v 1280x720 ^
  
   -codec:v libx264 -preset slower -tune animation -crf 22 "..\videos\film.mov.m4v"