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• Discord music Bot Python starts ffmpeg, green light appears around bot but no audio plays [closed]

  27 avril 2023, par QuestionHaver99

  I've tried using FFmpegOpusAudio and FFMPEGPCMaudio instead, but it gives the same issue. FFMPEG starts and the green light of the bot in the channel shows, but no audio plays, and then the bot exits the channel when the song should be over and FFMPEG terminates. I've tried streaming the audio and playing from a local file, and the same issue.

  


  and just as a quick checklist of confirmed not the issues : the volume is fine and the permissions are fine and ffmpeg is in environment variables and set up correctly.

  


  any advice would be greatly appreciated

  


• Merge pull request #311 from juristr/master

  31 janvier 2012, par Jörn Zaefferer

  m localization/messages_de.js Merge pull request #311 from juristr/master Grammar error in localization/messages_de.js

• why does concatting multiple videos renders no audio ?

  19 juin 2015, par dd-s

  As the title tells, I’m having issues with FFMPEG concat. It’s not really pertinent to the problem, but perhaps helpful to getting me the correct answer.

  app/models/event.rb
  
  
  
  class Event < ActiveRecord::Base
  
    has_many :videos
  
  end

  ---

  app/models/video.rb
  
  
  
  class Video < ActiveRecord::Base
  
    belongs_to :event
  
  end

  ---

  app/jobs/video_concatenator_job.rb
  
  
  
  class VideoConcatenatorJob < ActiveJob::Base
  
    queue_as :default
  
    attr_reader :event
  
  
  
    def perform(event_id)
  
      @event = Event.find event_id
  
      concatenator = VideoConcatenate.new(video_paths, output_name)
  
      concatenator.call
  
    end
  
  
  
    private
  
      def output_name
  
        event.id
  
      end
  
  
  
      def video_paths
  
        [intro_video.to_s] + event.videos.live.map { |video| video.event_video.download.path }
  
      end
  
  
  
      def intro_video
  
        image = annotate_image
  
        `ffmpeg -loop 1 -i "#{image}" -c:v libx264 -t 5 -pix_fmt yuv420p -y -vf scale=320:240 "#{output_name}"`
  
      end
  
  
  
      def annotate_image
  
        return event.intro_image.download.path if event.intro_text.blank?
  
        image = MiniMagick::Image.open event.intro_image.download.path
  
        output = Rails.root.join('tmp', 'ffmpeg', 'intro', "#{event.id}.jpg")
  
        image.combine_options do |c|
  
          . . .
  
          c.annotate '0', "#{event.intro_text}"
  
          . . .
  
        end
  
        image.write output.to_s
  
        output
  
      end
  
  
  
  
  
  end

  ---

  app/models/video_concatenate.rb
  
  
  
  class VideoConcatenate
  
    attr_accessor :input
  
    attr_reader :file_name
  
  
  
    def initialize(input, file_name)
  
      @input = input
  
      @file_name = file_name
  
    end
  
  
  
    def call
  
      `ffmpeg -i "concat:#{list_transcoder}" -c copy -bsf:a aac_adtstoasc "#{output}"`
  
    end
  
  
  
    private
  
  
  
      def output
  
        Rails.root.join("tmp", "ffmpeg", "concatenated", file_name)
  
      end
  
  
  
      def list_transcoder
  
        output_array = []
  
        # first transcoding them to mpeg transport stream
  
        input.map(&:to_s).each_with_index do |video, index|
  
          stream = finished_video_path("concatenations", "#{file_name}-#{index}.ts")
  
          `ffmpeg -i "#{video}" -y -c copy -bsf:v h264_mp4toannexb -f mpegts "#{stream}"`
  
          output_array << stream
  
        end
  
        output_array.join("|")
  
      end
  
  end

  So when the job is performed. It takes an intro_image and intro_text and annotates that image with MiniMagick. It then takes that annotated image and turns it into a 5 second .mp4. Then it takes that annotated intro video and the video files associated with the event, and concatenated them all into one single .mp4.

  If I take out [intro_video.to_s] + from VideoConcatenatorJob.video_paths then the issue doesn’t happen. something must be wrong with my annotated video. Any help is extremely appreciated.