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• Extract Progress tone from Audio file

  15 février 2017, par spicyramen

  Is there a way to extract Progress tone frequency and duration from an audio file (Audacity, VLC, ffmpeg, etc.)

  I need to configure Freeswitch spandsp.conf.xml for India.

  I collected the audio file where I can hear the tone, wondering if there is a tool to extract and configure the settings required in Freeswitch.

  Current non-working config :

     
  
       <descriptor>
  
          <tone>
  
           <element freq1="2100" freq2="0" min="700" max="0"></element>
  
          </tone>
  
          <tone>
  
       <element freq1="400" freq2="0" min="384" max="400"></element>
  
           <element freq1="0" freq2="0" min="200" max="224"></element>
  
           <element freq1="400" freq2="0" min="384" max="400"></element>
  
           <element freq1="0" freq2="0" min="1968" max="1984"></element>
  
      </tone>
  
          <tone>
  
           <element freq1="425" freq2="0" min="256" max="272"></element>
  
           <element freq1="0" freq2="0" min="240" max="256"></element>
  
           <element freq1="425" freq2="0" min="256" max="272"></element>
  
           <element freq1="0" freq2="0" min="224" max="240"></element>
  
      </tone>
  
          <tone>
  
           <element freq1="400" freq2="0" min="700" max="760"></element>
  
           <element freq1="0" freq2="0" min="700" max="760"></element>
  
           <element freq1="400" freq2="0" min="700" max="760"></element>
  
           <element freq1="0" freq2="0" min="700" max="760"></element> 
  
      </tone>
  
       </descriptor>

  Image of progress tone.

  

• FFMPEG replace video audio with filter_complex

  21 février 2017, par Chintan7027

  I wants such a output video where audio of output is created using ffmpeg -filter_complex mechanism,

  /usr/local/Cellar/ffmpeg/3.2.2/bin/ffmpeg 
  
  -i /uploads/videos/1487684390-lg9htt0RW2.mov 
  
  -i /uploads/audios/1487664761-SCPbo6Tkac.mp3 
  
  -filter_complex "
  
  [0:a]atrim=0:8.70824980736,asetpts=PTS-STARTPTS[aud1]; 
  
  [1:a]atrim=0:12.9567301273,asetpts=PTS-STARTPTS[aud2];
  
  [0:a]volume=0.3,atrim=start=8.70824980736:21.6649799347,asetpts=PTS-STARTPTS[slow_aud]; 
  
  [aud2][slow_aud] amerge=inputs=2[a_merged];
  
  [0:a]atrim=start=21.6649799347:31.6410098076 [remaining_audio]; 
  
  [aud1][a_merged][remaining_audio]concat=n=3:v=0:a=1[aout]" 
  
  -map 0:v -map "[aout]" -c:v copy -acodec mp3 
  
  /uploads/output/1487684390-lg9htt0RW2.mov

  Original Audio Recorded Based On UTC timestamp Vs Original Video Recorded Based on UTC timestamp

              13:00-------- Original Event Audio -------- 13:20
  
         12:50------------- Event Video Recorded --------------13:30

  This is my requirement

  So the audio of the output video should contains

  1. First 10 seconds(12:50 - 13:00) are Audio of Event Video Recorded
  2. Next 20 seconds (13:00 -13:20) are merged audio(Original Audio+ Original Video where Original video’s audio volume is .3)
  3. Remaining 10 seconds(13:21-13:30) of video will play remaing audio of video

  What I am getting by above commands

  1. First 10 seconds(12:50 - 13:00) are Audio of Event Video Recorded Achieved
  2. Next 20 seconds (13:00 -13:20) are merged audio(Original Audio+ Original Video where Original video’s audio volume is .3) Achieved
  3. Remaining 10 seconds(13:21-13:30) of video will play remaining audio of video Not Achieved

• Thumbs depending on the video duration

  28 février 2017, par MaelLacour

  as said in the title, i would like to add thumbs, depending on the video duration.

  It it possible to define time using percentage ? Or to use a variable duration ? I know that the duration can be found in the _meta, but is it possible to retrieve it before saving the video ?
  (I can certainly do it by using ffmpeg command, but it should be available using paperclip command ?)

  Here is my code :

  validates :title,
  
          length: { in: 2..60 }
  
  validates :description,
  
          length: { minimum: 2 }
  
  
  
  
  
  has_attached_file :content, styles: {
  
      :medium => {
  
          :format => 'mp4',
  
          #convert_options: {
  
              #output: {
  
                #name: 'value' # Results in `-name value` in the command line
  
              #}
  
          #}
  
      },
  
    :thumb0 => { :geometry => '320x180#', :format => 'jpeg', :time => 1.0 * duration / 6.0},
  
    :thumb1 => { :geometry => '320x180#', :format => 'jpeg', :time => 2.0 * duration / 6.0},
  
    :thumb2 => { :geometry => '320x180#', :format => 'jpeg', :time => 3.0 * duration / 6.0},
  
    :thumb3 => { :geometry => '320x180#', :format => 'jpeg', :time => 4.0 * duration / 6.0},
  
    :thumb4 => { :geometry => '320x180#', :format => 'jpeg', :time => 5.0 * duration / 6.0},
  
    }, :processors => [:transcoder]
  
  
  
    validates_attachment :content, presence: true,
  
                         content_type: { content_type: /\Avideo\/.*\Z/ },
  
                         size: { :less_than => 2.gigabytes }

  Thx in advance for your reply ! If it’s not clear or if you need extra-data let me know :)

  (I posted my question here, after wrongly posted it in GitHub, don’t be surprise if you found it on the issue repo)

  EDIT

  I made it to work with the following code,even if it’s not elegant at all :

    has_attached_file :content, styles: {
  
        :medium => {
  
            :format => 'mp4',
  
        },
  
        :thumb0 => { :geometry => '320x180#', :format => 'jpeg', :time => ->(attachment) { attachment.instance.method(:style_time_for0) } },
  
        :thumb1 => { :geometry => '320x180#', :format => 'jpeg', :time => ->(attachment) { attachment.instance.method(:style_time_for1) } },
  
        :thumb2 => { :geometry => '320x180#', :format => 'jpeg', :time => ->(attachment) { attachment.instance.method(:style_time_for2) } },
  
        :thumb3 => { :geometry => '320x180#', :format => 'jpeg', :time => ->(attachment) { attachment.instance.method(:style_time_for3) } },
  
        :thumb4 => { :geometry => '320x180#', :format => 'jpeg', :time => ->(attachment) { attachment.instance.method(:style_time_for4) } },
  
        }, :processors => [:transcoder]
  
  
  
    def style_time_for0(meta, _options)
  
      1*meta[:duration].to_f / 6
  
    end
  
    def style_time_for1(meta, _options)
  
      2*meta[:duration].to_f / 6
  
    end
  
    def style_time_for2(meta, _options)
  
      3*meta[:duration].to_f / 6
  
    end
  
    def style_time_for3(meta, _options)
  
      4*meta[:duration].to_f / 6
  
    end
  
    def style_time_for4(meta, _options)
  
      5*meta[:duration].to_f / 6
  
    end

  I should add a loop and a parameter to the style_time_for, but i can’t get it to work. Does someone have an idea ?