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• Error with IO.popen and ffmepg

  6 mars 2015, par Florian Dano Clement

  I received files in mp3 (2 minutes/files) I want to concatenate together and create a bigger file. So I created my model a function to do this using ffmpeg and IO.popen

  FileUtils.mkdir_p "#{Rails.root}/tmp/files"
  
  imported_dir = "#{Rails.root}/tmp/files/#{SecureRandom.uuid}"
  
  links.each_with_index do |link, index|
  
    file_path = "#{imported_dir}_#{index}#{File.extname(link)}"
  
    File.open(file_path, 'wb') do |file|
  
      file.write open(link).read
  
    end
  
    concat_list << "file '#{file_path}'\n"
  
  end
  
  File.open("#{imported_dir}.txt", 'w'){ |f| f.write(concat_list)}
  
  io = IO.popen("#{Rails.root}/lib/ffmpeg/ffmpeg -f concat -i #{imported_dir}.txt -c copy #{imported_dir}.mp3").readlines
  
  if sound = Sound.create(user_id: user.id, file: File.open("#{imported_dir}.mp3"), lang: lang, title: title)
  
    audio = FFMPEG::Movie.new("#{imported_dir}.mp3")
  
    if !audio.valid?
  
      puts "//_!_\\\\ Failed reading with ffmpeg (#{sound.id})#{sound.title} //_!_\\\\"
  
      return false
  
    end
  
  end 

  the problem is that my .txt file containing the file path

  file '/home/test/apps/example/releases/20150305224026/tmp/files/4dbe9707-cfef-467b-ab2c-a5e1e1165953_0.mp3'

  created files as well but the final file is not created and i got the error message :

  No such file or directory @ rb_sysopen - /home/test/apps/example/releases/20150305224026/tmp/files/4dbe9707-cfef-467b-ab2c-a5e1e1165953.mp3

  If anyone could help me

• ruby on rails carrierwave-video ffmpeg AWS

  11 mars 2015, par Joseph Han Nim Jang

  I am trying to create an academic site where users can upload lecture videos and other users can view them - similar to a site like Udemy.

  I am using Carrierwave, Carrierwave-video (for encoding videos), AWS to make this happen. AWS configuration has been done, and it’s working.

  However, I am getting this error. (By the way, I am testing this video feature in a Yelpdemo site, so I am trying to have users upload videos to restaurants for now.)

  rails points the error to @restaurant = Restaurant.new(restaurant_params)

  Errno::ENOENT in RestaurantsController#create

  No such file or directory - ffmpeg

  # POST /restaurants.json
  def create
  @restaurant = Restaurant.new(restaurant_params)

  respond_to do |format|
  
    if @restaurant.save

  This is my video_uploader.rb

  # encoding: utf-8
  
  
  
  class VideoUploader < CarrierWave::Uploader::Base
  
  
  
    include CarrierWave::Video
  
    include CarrierWave::Video::Thumbnailer
  
  
  
    process encode_video: [:mp4]
  
  
  
    include CarrierWave::MiniMagick
  
  
  
    storage :fog
  
  
  
    def store_dir
  
      "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  
    end
  
  
  
     version :thumb do
  
        process thumbnail: [{format: 'png', quality: 10, size: 192, strip: true, logger: Rails.logger}]
  
        def full_filename for_file
  
          png_name for_file, version_name
  
        end
  
    end
  
  
  
      def png_name for_file, version_name
  
        %Q{#{version_name}_#{for_file.chomp(File.extname(for_file))}.png}
  
      end
  
  end

  I have manually (added a file to the model) created video.rb in the model - not sure if this is the right way to do it..

  class Video < ActiveRecord::Base
  
  
  
    attr_accessor :user_id, :video,, :type, :filename, :path, :filesize, :width, :height, :duration, :bit_rate
  
  
  
    belongs_to :restaurant
  
    belongs_to :user
  
  
  
    mount_uploader :video, VideoUploader
  
  end

  in app/views/restaurants/show.html.erb for showing the video. Right now, without the encoding done, I can see like an image of the video. When I right lick and copy the code - it gives me the AWS URL which means AWS configuration is in place

          <p>
  
              <strong>Video:</strong>
  
              &lt;%= video_tag @restaurant.video_url %>
  
          </p>

  I am trying to show videos like this.

  I have downloaded FFMPEG (both ffmpeg-2.6 and SnowLeopard_Lion_Mountain_Yosemite_17) - not sure which one’s the right one.. And I have read somewhere that you need to place FFMPEG in your usr/local/bin -> So do you have to physically place ffmpeg exec file in your respective folder ?

  Need your expert help please.

  Thank you in advance !

• FFMPEG unwanted rotation

  5 mars 2015, par Ben

  When I add a watermark image with a landscape orientation to a video that has a portrait orientation the video automatically rotates to landscape. How do I prevent this ? Also, the audio file isn’t being merged into the output. How can I include the audio.mp3 to be the sole audio track ?

  ffmpeg -i 1425500438.MOV -i hashtag.png -itsoffset 00:00:07 -i audio.mp3  -filter_complex "[0:v]curves=preset=vintage[a];[a][1:v]overlay=10:10[out]"  -vcodec libx264 -pix_fmt yuv420p -ss 0:0:07 -t 14 -map "[out]" -y processed.mov

  EDIT****

  ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Mar 19 2014 12:48:02 with Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.1.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1/include/openjpeg-1.5 '
  
    libavutil      52. 48.101 / 52. 48.101
  
    libavcodec     55. 39.101 / 55. 39.101
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libavresample   1.  1.  0 /  1.  1.  0
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1425500438.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2015-03-04 20:20:14
  
      encoder         : 8.1.2
  
      encoder-eng     : 8.1.2
  
      date            : 2015-03-04T14:20:14-0600
  
      date-eng        : 2015-03-04T14:20:14-0600
  
      model           : iPhone 6
  
      model-eng       : iPhone 6
  
      make            : Apple
  
      make-eng        : Apple
  
    Duration: 00:00:10.56, start: 0.000000, bitrate: 703 kb/s
  
      Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 696 kb/s, 30.02 fps, 30.08 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        rotate          : 90
  
        creation_time   : 2015-03-04 20:20:14
  
        handler_name    : Core Media Data Handler
  
  Input #1, image2, from 'hashtag.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #1:0: Video: png, rgba, 131x29, 25 tbr, 25 tbn, 25 tbc
  
  Input #2, mp3, from 'audio.mp3':
  
    Metadata:
  
      encoder         : Lavf55.19.104
  
    Duration: 00:00:10.44, start: 0.000000, bitrate: 128 kb/s
  
      Stream #2:0: Audio: mp3, 16000 Hz, stereo, s16p, 128 kb/s
  
  [libx264 @ 0x7f9894017200] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX AVX2 FMA3 BMI1 BMI2
  
  [libx264 @ 0x7f9894017200] profile High, level 3.0
  
  [libx264 @ 0x7f9894017200] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mov, to 'processed.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      make-eng        : Apple
  
      make            : Apple
  
      encoder-eng     : 8.1.2
  
      date            : 2015-03-04T14:20:14-0600
  
      date-eng        : 2015-03-04T14:20:14-0600
  
      model           : iPhone 6
  
      model-eng       : iPhone 6
  
      encoder         : Lavf55.19.104
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 480x360, q=-1--1, 11552 tbn, 30.08 tbc (default)
  
  Stream mapping:
  
    Stream #0:0 (h264) -> curves
  
    Stream #1:0 (png) -> overlay:overlay
  
    overlay -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  frame=  422 fps=413 q=-1.0 Lsize=     361kB time=00:00:13.96 bitrate= 211.9kbits/s dup=303 drop=0    
  
  video:356kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.574185%
  
  [libx264 @ 0x7f9894017200] frame I:2     Avg QP:20.09  size: 19764
  
  [libx264 @ 0x7f9894017200] frame P:134   Avg QP:22.29  size:  2248
  
  [libx264 @ 0x7f9894017200] frame B:286   Avg QP:28.02  size:    79
  
  [libx264 @ 0x7f9894017200] consecutive B-frames:  9.2%  0.0%  3.6% 87.2%
  
  [libx264 @ 0x7f9894017200] mb I  I16..4:  6.6% 45.0% 48.4%
  
  [libx264 @ 0x7f9894017200] mb P  I16..4:  1.8%  2.4%  0.7%  P16..4: 40.8% 13.6%  4.5%  0.0%  0.0%    skip:36.1%
  
  [libx264 @ 0x7f9894017200] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 10.9%  0.1%  0.0%  direct: 0.0%  skip:89.0%  L0:56.5% L1:42.3% BI: 1.2%
  
  [libx264 @ 0x7f9894017200] 8x8 transform intra:47.6% inter:61.5%
  
  [libx264 @ 0x7f9894017200] coded y,uvDC,uvAC intra: 51.3% 81.4% 36.7% inter: 5.6% 8.5% 0.5%
  
  [libx264 @ 0x7f9894017200] i16 v,h,dc,p: 21% 27% 12% 40%
  
  [libx264 @ 0x7f9894017200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 27% 19%  5%  4%  4%  7%  5%  6%
  
  [libx264 @ 0x7f9894017200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 22% 12%  4%  5%  5%  6%  4%  6%
  
  [libx264 @ 0x7f9894017200] i8c dc,h,v,p: 40% 28% 22% 10%
  
  [libx264 @ 0x7f9894017200] Weighted P-Frames: Y:16.4% UV:10.4%
  
  [libx264 @ 0x7f9894017200] ref P L0: 73.7% 12.2% 11.7%  2.3%  0.2%
  
  [libx264 @ 0x7f9894017200] ref B L0: 93.5%  5.8%  0.7%
  
  [libx264 @ 0x7f9894017200] ref B L1: 97.2%  2.8%
  
  [libx264 @ 0x7f9894017200] kb/s:207.25