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• FFmpeg doesn't play any audio through Discord.py BOT

  12 mai 2019, par Lewis H

  Here is my code for my Discord bot’s play function :

  @bot.command()
  
  async def play(ctx, url:str = None): # DOESN'T WORK, DOWNLOADS BUT DOESN'T PLAY
  
  
  
          ...
  
  
  
          ytdl_options = {
  
              'format': 'bestaudio/best',
  
              'postprocessors': [{
  
                  'key': 'FFmpegExtractAudio',
  
                  'preferredcodec': 'mp3',
  
                  'preferredquality': '192',
  
              }],
  
          }
  
          ytdl = youtube_dl.YoutubeDL(ytdl_options)
  
  
  
          loop = asyncio.get_event_loop()
  
          data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url))
  
  
  
  
  
          if 'entries' in data:
  
              data = data['entries'][0] # taking top item from a YT playlist
  
  
  
          source = ytdl.prepare_filename(data)
  
  
  
          vc.play(discord.FFmpegPCMAudio(source)) #play audio
  
          print(vc.is_playing())
  
          await ctx.send("Now playing: " + data.get('title')) #now playing
  
          asyncio.sleep(3)
  
          print(vc.is_playing())

  When I call the function, it runs fine and downloads the video from youtube-dl, then sends the message "Now playing : X", but doesn’t play any audio.

  I added the two print(vc.is_playing()) lines and what is returned in the shell is :

  True
  
  False

  So clearly it tries to play the song but immediately fails.

  There are no exceptions thrown, so I can’t understand why FFmpeg doesn’t want to play the audio.

• Play a Video from MemoryStream, Using FFMpeg

  7 juin 2014, par Delphi.Boy

  I’m having a hard time, searching how to play a video file from a TMemoryStream (or a similar buffer in memory) using FFMpeg. I’ve seen many things, including UltraStarDX, expensive FFMpeg components for Delphi and so on.

  One component called FFMpeg Vcl Player claims to play video formats from a memory stream. I downloaded the trial version and I guess it uses CircularBuffer.pas for that matter (maybe).

  Does any one know how to do this ?

  Edit :
  Now the better question is how to play an encrypted video file, using FFMpeg or similar libraries.

• Using WebHDFS to play video over HTTP

  3 février 2015, par Qin.Yang

  I used ffmpeg + libx264 to convert file format as H264, then uploaded the file to Hadoop. I used WebHDFS to access the file by HTTP, but can not online play. If I download this file over HTTP, it can play by HTML5 video. My English is poor, hope you know what I mean.