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• FFMpeg overlay and fade images and text in and out at over video background

  28 décembre 2019, par grootester

  Prior to applying the drawbox and drawtext text option I was able to fade in and out images easily. However, attempting to incorporate the drawtext produces unwanted errors. Any ideas how this could be rememdied ? Love to show multi-line text (different fonts) centered over box at specific times with fade in fade out times that works alongside images fading in out at specific times.

  ffmpeg -i vids/testVid.mp4 -loop 1 -i slideshow/pic1.png -loop 1 -i slideshow/pic2.png -loop 1 -i slideshow/pic3.png -i slideshow/pic4.png -filter_complex "[0:v]drawbox=x=40:y=40:w=250:h=75:color=white,drawtext=fontfile=arialb.ttf:fontsize=24:font color=black:text=Micky Mouse,drawtext=fontfile=arial.ttf:fontsize=24 : font color=black:text=January 1st 1938 — December 19th 2019fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+4/TB[ovr1] ; [2]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+10/TB[ovr2] ; [3]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+16/TB[ovr3] ; [4]fade=st=0:d=1:alpha=1,fade=out:st=5:d=1:alpha=1,trim=0:6,setpts=PTS+22/TB[ovr4] ; [0:v][ovr1]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,4,10)’[base1] ; [base1][ovr2]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,10,16)’[base2] ; [base2][ovr3]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,16,22)’[base3] ; [base3][ovr4]overlay=(main_w-overlay_w)/2 :(main_h-overlay_h)/2:enable=’between(t,22,28)’[out]" -map "[out]" -c:v libx264 -c:a copy -flags +global_header -crf 27 -preset veryfast -s 1920x1080 -y slideshow/outTest.mp4

• Presentation on the HTML5 video tag

  29 avril 2010

  A few weeks back, I was given the opportunity to present at MinneWebcon. My talk, "<video> will be your friend" focused on the legal issues and implementation possibilities surrounding the HTML5 video tag.

  I’ve put my slides online, if you want to take a look. I’ve also recorded the first half the of the lecture as part of a test of our Mocha class capture application. I’ll be recording the second half Real Soon Now.

  HTML5 Video Presentation

  View more presentations from sith33.

• 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.