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• Change video file used for saving in table

  9 août 2017, par CR7

  I am trying to convert uploaded video file to mp4 format. It is working properly. But after that in my DB, it is saving the old video file details instead of converted file. Also the converted file is saved in the uploaded video name and extension. I am using streamio-ffmpeg gem

  In my model I have the following code.

  mount_uploader :video, VideoUploader

  and in the video_uploader.rb

  require 'streamio-ffmpeg'
  
  
  
  class VideoUploader < CarrierWave::Uploader::Base
  
    process :encode_video
  
  
  
    def encode_video
  
      file = FFMPEG::Movie.new(current_path)      
  
      filename = "#{current_path.chomp(File.extname(current_path))}.mp4"
  
      file.transcode(filename)
  
      FileUtils.mv(filename, current_path)
  
    end  
  
  end

  How can I set the current_path file to the converted file path

• ffmpeg yuvj422p color movie conversion avi2ogv

  28 juillet 2017, par 7Tonin

  While converting avi video to ogv, there is a color problem in output file.
  How can I solve this issue ?
  normal colors altered colors

  Actually a part of the problem is from the player - so weak question

  Command using ffmpeg-3.3.2-1.mga6.tainted :

  ffmpeg -i dscn0146.avi -pix_fmt yuv422p -s 640x480 dscn0146_hq.ogv -y

  And input metadata :

  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Input #0, avi, from 'dscn0146.avi':
  
    Metadata:
  
      encoder         : 
  
      maker           : NIKON
  
      model           : COOLPIX S3500
  
      creation_time   : 2017-07-22 12:09:06
  
    Duration: 00:00:07.33, start: 0.000000, bitrate: 11091 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 10770 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> theora (libtheora))
  
    Stream #0:1 -> #0:1 (pcm_s16le (native) -> vorbis (libvorbis))

  Processes normaly, but fires a warning :

  [swscaler @ 0xd3c3a0] deprecated pixel format used, make sure you did set range correctly

  Output metadata :

  Output #0, ogv, to 'dscn0146_hq.ogv':
  
    Metadata:
  
      model           : COOLPIX S3500
  
      maker           : NIKON
  
      encoder         : Lavf57.71.100
  
      Stream #0:0: Video: theora (libtheora), yuv422p(progressive), 640x480, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.89.100 libtheora
  
        model           : COOLPIX S3500
  
        maker           : NIKON
  
      Stream #0:1: Audio: vorbis (libvorbis), 22050 Hz, mono, fltp
  
      Metadata:
  
        encoder         : Lavc57.89.100 libvorbis
  
        model           : COOLPIX S3500
  
        maker           : NIKON

• Sidekiq not processing video meta data using stremio-ffmpeg in rails app

  22 juillet 2017, par Arnold

  I am trying to process different video resolutions in background using carrierwave backgrounder, carrierwave-video and sidekiq. everything is working well (all the versions are created in background) except the meta data captured using stremio-ffmpeg. I am completely stuck and can’t figure out why the meta data are not being processed.

  below are my sample codes

  video_uploader.rb

  require 'streamio-ffmpeg'
  
  class VideoUploader < CarrierWave::Uploader::Base
  
  include CarrierWave::Video  # for your video processing
  
  include CarrierWave::Video::Thumbnailer
  
  include ::CarrierWave::Backgrounder::Delay
  
  # Include RMagick or MiniMagick support:
  
  # include CarrierWave::RMagick
  
  # include CarrierWave::MiniMagick
  
  # Choose what kind of storage to use for this uploader:
  
  storage :file
  
  # storage :fog
  
  #byebug
  
  process :save_metadata
  
  # Override the directory where uploaded files will be stored.
  
  # This is a sensible default for uploaders that are meant to be mounted:
  
  def store_dir
  
  default_path = "/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  
  # if FLAVOR == "uglive"
  
  #   default_path = "/uglive#{default_path}"
  
  # end
  
  "#{VIDEO_STORAGE}#{default_path}"
  
  end
  
  version :thumb do
  
  process thumbnail: [{format: 'png', quality: 10, size: 360, strip: false, 
  
  square: false, logger: Rails.logger}]
  
  def full_filename for_file
  
    png_name for_file, version_name
  
  end
  
  end
  
  def png_name for_file, version_name
  
  #remove all accents
  
  I18n.transliterate(%Q{#{version_name}_#
  
  {for_file.chomp(File.extname(for_file))}.png})
  
  end
  
  #save the video size in the model
  
  def save_metadata
  
  video = FFMPEG::Movie.new(file.file)
  
  if video.valid?
  
    model.duration = video.duration #(duration of the video in seconds)
  
    model.size = video.size #size is bytes
  
    model.video_codec = video.video_codec # "h264"
  
    model.width = video.width # 640 (width of the video in pixels)
  
    model.height = video.height # 480 (height of the video in pixels)
  
    model.audio_codec = video.audio_codec # "aac"
  
   end
  
   end
  
   # Different Video Resolutions
  
   version :res_480p, :do_not_delay => true do
  
   process encode_video: [:mp4, resolution: "720X480"]
  
   end
  
   version :res_720p do
  
   process encode_video: [:mp4, resolution: "1280X720"]
  
  end
  
  version :res_360p do
  
  process encode_video: [:mp4, resolution: "640x360"]
  
  end
  
  version :res_240p do
  
  process encode_video: [:mp4, resolution: "426x240"]
  
  end

  video.rb i called the mount uploader and background_process method (carrierwave video gem)

  mount_uploader :file, VideoUploader
  
  process_in_background :file

  when i run bundle exec sidekiq -q carrierwavethe version are created in background but the save_metadata method is never processed, so the duration,size,width, height, video_codec and audio_codec are nil in the Video model.

  I am stuck on this the whole day. any help will be highly welcome