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• Converting Videos In the Background ROR 3

  2 octobre 2012, par DragonFire353

  I've searched around on google and have come up with only one site that explains how to do this : http://railsonedge.blogspot.com/2009/01/flash-video-tutorial-with-rails-ffmpeg.html?m=0 I'm already using paperclip and already have everything set up with it and like using it better than the way this site is doing it. Is there a way to convert videos in the background while keeping track of the state of it using paperclip ? My Video.rb currently :

  class Video < ActiveRecord::Base
  
    belongs_to :user
  
    has_many :comments, dependent: :destroy
  
    attr_accessible :video, :user_id, :video_file_name, :title, :public, :description, :views
  
  
  
    has_attached_file :video, :styles => { 
  
      :video => { geometry: "800x480>", format: 'webm' },
  
      :thumb => { geometry: "200x200>", format: 'png', time: 3 },
  
    }, processors: [:ffmpeg], url: "/users/:user_id/videos/:id/:basename_:style.:extension"
  
  
  
    #process_in_background :video #causes death
  
  
  
    validates :video, presence: true
  
    validates :description, presence: true, length: { minimum: 5, maximum: 100}
  
    validates :title, presence: true, length: { minimum: 1, maximum: 15 }
  
  
  
    validates_attachment_size :video, less_than: 1.gigabytes
  
    validates_attachment :video, presence: true
  
  
  
    default_scope order: 'created_at DESC'
  
  
  
    Paperclip.interpolates :user_id do |attachment, style|attachment.instance.user_id
  
    end
  
  
  
    def self.search(search)
  
      if search
  
        find(:all, conditions: ["public = 't' AND title LIKE ?", "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, conditions: ["public = 't'"], order: "created_at DESC")
  
      end
  
    end
  
  
  
    def self.admin_search(search)
  
      if search
  
        find(:all, conditions: ['title LIKE ?', "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, order: "created_at DESC")
  
      end
  
    end
  
  
  
  end

• Convert audio files to mp3 using ffmpeg

  21 janvier 2017, par Hrishikesh Choudhari

  I need to convert audio files to mp3 using ffmpeg.

  When i write the command as ffmpeg -i audio.ogg -acodec mp3 newfile.mp3, I get the error :

  FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: 
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    built on Jun 24 2010 14:56:20, gcc: 4.4.1
  
  Input #0, mp3, from 'ZHRE.mp3':
  
    Duration: 00:04:12.52, start: 0.000000, bitrate: 208 kb/s
  
      Stream #0.0: Audio: mp3, 44100 Hz, stereo, s16, 256 kb/s
  
  Output #0, mp3, to 'audio.mp3':
  
      Stream #0.0: Audio: 0x0000, 44100 Hz, stereo, s16, 64 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Unsupported codec for output stream #0.0

  I also ran this command :

   ffmpeg -formats | grep mp3

  and got this in response :

  FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: 
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    built on Jun 24 2010 14:56:20, gcc: 4.4.1
  
   DE mp3             MPEG audio layer 3
  
   D A    mp3             MP3 (MPEG audio layer 3)
  
   D A    mp3adu          ADU (Application Data Unit) MP3 (MPEG audio layer 3)
  
   D A    mp3on4          MP3onMP4
  
   text2movsub remove_extra noise mov2textsub mp3decomp mp3comp mjpegadump imxdump h264_mp4toannexb dump_extra

  I guess that the mp3 codec isnt installed. Am I right here ? Can anyone help me out here ?

• FFmpeg convert .mov to .ogv

  24 juillet 2016, par Morten Hauberg

  I have some troubles converting my .mov to a .ogg file using FFmpeg.

  This command should work, right ?

  ffmpeg -i test.mov -s 640x320 -vcodec libtheora -acodec libvorbis out.ogv

  It gives me this output

  [0] => FFmpeg version SVN-r0.5.9-4:0.5.9-1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
  [1] =>   configuration: --extra-version=4:0.5.9-1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdc1394 --enable-shared --disable-static
  
  [2] =>   libavutil     49.15. 0 / 49.15. 0
  
  [3] =>   libavcodec    52.20. 1 / 52.20. 1
  
  [4] =>   libavformat   52.31. 0 / 52.31. 0
  
  [5] =>   libavdevice   52. 1. 0 / 52. 1. 0
  
  [6] =>   libavfilter    0. 4. 0 /  0. 4. 0
  
  [7] =>   libswscale     0. 7. 1 /  0. 7. 1
  
  [8] =>   libpostproc   51. 2. 0 / 51. 2. 0
  
  [9] =>   built on Jun 10 2012 08:33:06, gcc: 4.4.5
  
  [10] => 
  
  [11] => Seems stream 0 codec frame rate differs from container frame rate: 1200.00 (1200/1) -> 30.00 (30/1)
  
  [12] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov':
  
  [13] =>   Duration: 00:00:06.26, start: 0.000000, bitrate: 809 kb/s
  
  [14] =>     Stream #0.0(und): Video: h264, yuv420p, 480x360, 30 tbr, 600 tbn, 1200 tbc
  
  [15] =>     Stream #0.1(und): Audio: aac, 44100 Hz, mono, s16
  
  [16] => Output #0, ogg, to 'out.ogv':
  
  [17] =>     Stream #0.0(und): Video: libtheora, yuv420p, 640x320, q=2-31, 200 kb/s, 90k tbn, 30 tbc
  
  [18] =>     Stream #0.1(und): Audio: vorbis, 44100 Hz, mono, s16, 64 kb/s
  
  [19] => Stream mapping:
  
  [20] =>   Stream #0.0 -> #0.0
  
  [21] =>   Stream #0.1 -> #0.1
  
  [22] => Press [q] to stop encoding

  It seems right, right ?

  But the movie is only about 1 second long.
  Why is that ?

  I do not have access to ffmpeg2theora, so please dont suggest that :)