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• Load processed video instead of original video - Rails, Dragonfly

  1er février 2016, par Michael B

  In my Rails 4-Project, I am using Dragonfly to upload images and videos.
  For image-processing I use imagemagick, for videoprocessing I use ffmpeg.

  Videos are uploaded and stored in the folder uploads/videos. After processing, they are stored in public/ffmpeg_videos/

  My question is : How can I use the processed-video instead of the uploaded video ?

  e.g. I use this code in the view, to display a video :

  <video src="&lt;%=@video.video.url%>"></video>

  This successfully loads the original video from the upload-path. But what do I have to change, to load the video from the ffmpeg-path ?

  initializers/dragonfly.rb

  require 'dragonfly'
  
  
  
  # Configure
  
  Dragonfly.app(:images).configure do
  
    plugin :imagemagick
  
    protect_from_dos_attacks false
  
    secret 'd045734b043b4383a246c5c8daf2d3e31217dc8b030f21861e4fd16c4b72d382'
  
    url_format '/media/:job/:name'
  
  
  
    datastore :file,
  
              root_path: Rails.root.join('uploads/images/'),
  
              server_root: Rails.root.join('uploads')
  
  end
  
  
  
  Dragonfly.app(:videos).configure do
  
    secret 'd045734b043b4383a246c5c8daf2d3e31217dc8b030f21861e4fd16c4b72d382'
  
    url_format "/video/:job/:name"
  
  
  
    datastore :file,
  
              root_path: Rails.root.join('uploads/videos/'),
  
              server_root: Rails.root.join('uploads')
  
  end
  
  
  
  # Logger
  
  Dragonfly.logger = Rails.logger
  
  
  
  # Mount as middleware
  
  Rails.application.middleware.use Dragonfly::Middleware, :images
  
  Rails.application.middleware.use Dragonfly::Middleware, :videos
  
  
  
  # Add model functionality
  
  if defined?(ActiveRecord::Base)
  
    ActiveRecord::Base.extend Dragonfly::Model
  
    ActiveRecord::Base.extend Dragonfly::Model::Validations
  
  end

• checkasm/riscv : test misaligned before V

  21 mai 2024, par Rémi Denis-Courmont

  checkasm/riscv : test misaligned before V
  Otherwise V functions mask scalar misaligned ones.
  

  • [DH] tests/checkasm/checkasm.c

• FFmpeg Keeps Outputting 4:3 aspect ratio - No Idea Why

  11 janvier 2020, par John Doe

  This command will produce a 1920x1080 video, however there are borders on the left and right, making it appear 4:3 rather than the proper 16:9, and also warps/stretches the overlays. I have checked (and rechecked) my input files and they’re all 1920x1080. This is such a silly problem and I feel like I’m missing something obvious.

  ffmpeg -y -f concat -i "concat.txt" -i "mask.png" -i "audio.mp3" -filter_complex "[0]scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0010))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':fps=15:d=200[p];[p][1]overlay,drawtext=fontfile=Heathergreen.otf:text='Testing':fontcolor=black:fontsize=32:x=140:y=950[v];[2:a]showwaves=mode=cline:s=178x56:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=108:740,scale=1920:1080[outv]" -map "[outv]" -map 2:a -c:v libx264 -c:a aac -preset ultrafast -shortest "output.mp4"