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• Way to bypass video upload when testing using Rspec

  1er mars 2014, par Justin

  I'm testing a page on my app that shows videos. I'm trying to speed up the test by bypassing the video upload process or another way ??

  Maybe I'm using FactoryGirl incorrectly for file uploads..

  Using FactoryGirl, I'm creating the video with

  FactoryGirl.define do
  
   factory :video do
  
    user_id 1
  
    type "Live"
  
    title "FooBar"
  
    description "Foo bar is the description"
  
    video { fixture_file_upload(Rails.root.join('spec', 'files', 'concert.mov'), 'video/mp4') }
  
   end
  
  end

  And in the request's spec I'm describing the videos as :

  describe "videos page" do
  
  
  
    let(:user) { FactoryGirl.create(:user) }
  
    let!(:video1) { FactoryGirl.create(:video) }
  
  
  
    before { visit user_video_path(user) }
  
  
  
    it { should have_title(user.name) }
  
    it { should have_content(user.name) }
  
  
  
    describe "videos" do
  
      it { should have_content(video1.description) }
  
    end
  
  end

  Now, everytime I run the test for this page it goes through the file upload process which takes more time. I'm also using FFmpeg

  **video.rb (video model)**
  
  
  
  validates :video, presence: true
  
  has_attached_file :video, :styles => {
  
                                        :medium => { :geometry => "640x480", :format => 'mp4' },
  
                                        :thumb => { :geometry => "470x290#", :format => 'jpg', :time => 10 }
  
                                       }, 
  
                            :processors => [:ffmpeg]

  What this does when I test the page is the CLI goes through the video upload process like it would if you were uploading the video and watching your local server.

• How does winget set permenant aliases ?

  9 septembre 2023, par ninbura

  When I install something like ffmpeg with winget it sets permanent aliases for ffmpeg, ffplay, & ffprobe.

  


  winget install gyan.ffmpeg


  


  It doesn't look like it's adding anything to my path environment variable. If I use the Set-Alias utility said alias is ephemeral, only lasting until the end of the current session. Eventually I found that I can use my $profile to denote a list of aliases that insnsiate every time I launch my shell.

  


  Does winget do the same thing just with a different "profile" file ?

  


• Extract the middle frame of a video in Python using ffmpeg ?

  10 juin 2014, par ensnare

  I have a collection of video files for which I’d like to generate thumbnails. How can I extract the middle frame of the video in Python ?

  If I execute :

  ffmpeg -i /tmp/0.mts

  I get a line returned to the shell that says :

  Duration: 00:00:04.49, start: 1.016689, bitrate: 25234 kb/s

  Maybe I could extract the timestamp after the duration and somehow divide that by 2 to get the middle frame timestamp, and extract that ?

  If I’m recursing through a large collection of videos, is there a way to keep ffmpeg "open" without the overhead of opening/closing it to identify each file ?