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  • How do I get videos to upload using ruby on rails carrierwave-video ?

    9 juillet 2016, par Eric

    Updated as of July 9, 2016

    I tried to follow the instructions on the github website for the video uploader process using carrierwave-video gem but get an error that says the file or directory mmpeg -i doesn’t exist.

    The upload path for images functions correctly, just not the video one.

    I have added all of the following code necessary to help solve the error and minified as much as i possibly could.

    Video uploader code using carrierwave

    class VideoUploader < CarrierWave::Uploader::Base

      include CarrierWave::Video
    
  storage :file
    

    
  version :mp4 do
    
    process :encode_video => [:mp4, resolution: "100x100"]
    
  end
    

    
  def store_dir
    
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
    
  end
    
end

    Here is the movie controller code that handles uploading of videos

    class MoviesController &lt; ApplicationController
    
   include MoviesHelper
    

    
   def index
    
      mode "index"
    
   end
    

    
   def show
    
      mode "show"
    
   end
    

    
   def new
    
      mode "new"
    
   end
    

    
   def edit
    
      mode "edit"
    
   end
    

    
   def create
    
      mode "create"
    
   end
    

    
   def update
    
      mode "update"
    
   end
    

    
   def destroy
    
      mode "destroy"
    
   end
    

    
   def review
    
      mode "review"
    
   end
    

    
   def approve
    
      mode "approve"
    
   end
    

    
   def deny
    
      mode "deny"
    
   end
    
end

    Here is the model data for the movie that goes with it

    class Movie &lt; ActiveRecord::Base
    
  attr_accessible :created_on, :description, :maintenance, :reviewed, :subplaylist_id, :title, :user_id, :video, :remote_video_url
    
  belongs_to :user
    
  belongs_to :subplaylist
    
  mount_uploader :video, VideoUploader
    
end

    Here is where the movie is supposed to be displayed but it is not working

    &lt;% provide(:title, "Movie: Where movies are made!") %>
    
&lt;% provide(:keywords, "movies, video") %>
    
&lt;% provide(:description, "This is the place where users showcase their wonderful video talent.") %>
    
<p>&lt;%= notice %></p>
    
<h1 class="pageheader">&lt;%= @movie.title %></h1>
    
<br />
    
<p class="pagetext">&lt;%= video_tag(@movie.video_url.to_s, controls: true, class: "imagebox") %></p>
    
<p class="pagetext">&lt;%= @movie.description %></p>
    
<p class="pagetext">Created on: &lt;%= @movie.created_on.strftime("%B-%d-%Y") %></p>
    
<p class="pagetext">Owner: &lt;%= getType(@movie.user) %>&lt;%= link_to @movie.user.vname, user_path(@movie.user) %></p>
    
<br />
    
<p class="pagetext">&lt;%= link_to 'Back', mainplaylist_subplaylist_path(@subplaylist.mainplaylist, @movie.subplaylist) %></p>

    Here is where the movie new action is

    &lt;% provide(:title, "Movie: Create new movies here!") %>
    
&lt;% provide(:description, "New movies are uploaded only to the site when the movie gets approved.") %>
    
<h1 class="pagetextheader">New movie</h1>
    
&lt;%= render 'form' %>
    
<p class="pagetext">&lt;%= link_to 'Back', mainplaylist_subplaylist_path(@subplaylist.mainplaylist, @subplaylist) %></p>

    Here is where the movies forum parameters are

    &lt;%= form_for([@subplaylist, @movie], :html=>{:multipart => true}) do |f| %>
    
  &lt;% if @movie.errors.any? %>
    
    <div>
    
      <h2>&lt;%= pluralize(@movie.errors.count, "error") %> prohibited this movie from being saved:</h2>
    

    
      <ul>
    
      &lt;% @movie.errors.full_messages.each do |msg| %>
    
        <li>&lt;%= msg %></li>
    
      &lt;% end %>
    
      </ul>
    
    </div>
    
  &lt;% end %>
    
  <br />
    
  <div class="pagetext">
    
    &lt;%= f.label :title %><br />
    
    &lt;%= f.text_field :title %>
    
  </div>
    
  <div class="pagetext">
    
    &lt;%= f.file_field :video %>
    
  </div>
    
  <div class="pagetext">
    
    &lt;%= f.label :remote_video_url, "or video URL" %><br />
    
    &lt;%= f.text_field :remote_video_url %>
    
  </div>
    
  <div class="pagetext">
    
    &lt;%= f.label :description %><br />
    
    &lt;%= f.text_area :description %>
    
  </div>
    
  <div class="pagetext">
    
    &lt;%= f.submit %>
    
  </div>
    
  <br />
    
&lt;% end %>

    Here is the movies helper code

    module MoviesHelper
    

    
   def mode(type)
    
      code = auto_logout
    
      if(code == true)
    
         sign_out
    
         redirect_to root_path
    
      else
    
         #Check if Maintenance is turned_on
    
         allmode = Maintenancemode.find_by_id(1)
    
         moviemode = Maintenancemode.find_by_id(19)
    
         mode_turned_on = (allmode.maintenance_on || moviemode.maintenance_on)
    
         #Determine if any maintenance is on
    
         if(mode_turned_on)
    
            #Determine if we are a regular user
    
            regularUser = (!current_user || !current_user.admin?)
    
            if(regularUser)
    
               #Determine which maintenance mode is on
    
               if(allmode.maintenance_on)
    
                  redirect_to maintenance_path
    
               else
    
                  redirect_to movies_maintenance_path
    
               end
    
            else
    
               switch type
    
            end
    
         else
    
            switch type
    
         end
    
      end
    
   end
    

    
   private
    
      def getType(user)
    
         if(user.admin)
    
            value = "$"
    
         else
    
            typeFound = Usertype.find_by_user_id(user.id)
    
            if(typeFound)
    
               type = typeFound.privilege
    
               if(type == "Reviewer")
    
                  value = "^"
    
               elsif(type == "Banned")
    
                  value = "!"
    
               else
    
                  value = "~"
    
               end
    
            else
    
               value = "~"
    
            end
    
         end
    
         return value
    
      end
    

    
      def movieApproved
    
         movieFound = Movie.find_by_id(params[:movie_id])
    
         if(movieFound)
    
            movieFound.reviewed = true
    
            pouch = Pouch.find_by_user_id(movieFound.user_id)
    
            pointsForMovie = 10
    
            pouch.amount += pointsForMovie
    
            @pouch = pouch
    
            @pouch.save
    
            @movie = movieFound
    
            @movie.save
    
#            MovieMailer.movie_approved(@movie, pointsForMovie).deliver
    
            redirect_to movies_review_path
    
         else
    
            render "public/404"
    
         end
    
      end
    

    
      def movieDenied
    
         movieFound = Movie.find_by_id(params[:movie_id])
    
         if(movieFound)
    
            #Retrieve the user who owns this pet first
    
            #userEmail = petFound.user.email
    
            #Send mail to user with link to edit the pet they sent
    
            @movie = movieFound
    
            MovieMailer.movie_denied(@movie).deliver
    
            redirect_to movies_review_path
    
         else
    
            render "public/404"
    
         end
    
      end
    

    
      def createMovie(subplaylistFound)
    
         newMovie = subplaylistFound.movies.new
    
         @subplaylist = subplaylistFound
    
         @movie = newMovie
    
      end
    

    
      def saveMovie(subplaylistFound, logged_in)
    
         newMovie = subplaylistFound.movies.new(params[:movie])
    
         newMovie.user_id = logged_in.id
    
         currentTime = Time.now
    
         newMovie.created_on = currentTime
    
         @movie = newMovie
    
         if(@movie.save)
    
            @subplaylist = subplaylistFound
    
#            MovieMailer.review_movie(@movie).deliver
    
            flash[:success] = "#{@movie.title} is currently being reviewed please check back later."
    
            redirect_to subplaylist_movie_path(@subplaylist, @movie)
    
         else
    
            render "new"
    
         end
    
      end
    

    
      def switch(type)
    
         if(type == "index") #Admin only
    
            logged_in = current_user
    
            if(logged_in)
    
               if(logged_in.admin)
    
                  allMovies = Movies.order("created_on desc").page(params[:page]).per(10)
    
                  @movies = allMovies
    
               else
    
                  redirect_to root_path
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "show")
    
            movieFound = Movie.find_by_id(params[:id])
    
            if(movieFound)
    
               subplaylistFound = Subplaylist.find_by_id(params[:subplaylist_id])
    
               if(subplaylistFound)
    
                  if(movieFound.reviewed)
    
                     @subplaylist = subplaylistFound
    
                     @movie = movieFound
    
                  else
    
                     logged_in = current_user
    
                     if(logged_in)
    
                        userMatch = ((logged_in.id == movieFound.user_id) || logged_in.admin)
    
                        if(userMatch)
    
                           @subplaylist = subplaylistFound
    
                           @movie = movieFound
    
                        else
    
                           redirect_to root_path
    
                        end
    
                     else
    
                        redirect_to root_path
    
                     end
    
                  end
    
               else
    
                  redirect_to root_path
    
               end
    
            else
    
               render "public/404"
    
            end
    
         elsif(type == "new")
    
            logged_in = current_user
    
            if(logged_in)
    
               subplaylistFound = Subplaylist.find_by_id(params[:subplaylist_id])
    
               if(subplaylistFound)
    
                  if(subplaylistFound.collab_mode)
    
                     createMovie(subplaylistFound)
    
                  else
    
                     userMatch = (logged_in.id == subplaylistFound.user_id)
    
                     if(userMatch)
    
                        createMovie(subplaylistFound)
    
                     else
    
                        redirect_to root_path
    
                     end
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "create")
    
            logged_in = current_user
    
            if(logged_in)
    
               subplaylistFound = Subplaylist.find_by_id(params[:subplaylist_id])
    
               if(subplaylistFound)
    
                  if(subplaylistFound.collab_mode)
    
                     saveMovie(subplaylistFound, logged_in)
    
                  else
    
                     userMatch = (logged_in.id == subplaylistFound.user_id)
    
                     if(userMatch)
    
                        saveMovie(subplaylistFound, logged_in)
    
                     else
    
                        redirect_to root_path
    
                     end
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "edit")
    
            logged_in = current_user
    
            if(logged_in)
    
               movieFound = Movie.find_by_id(params[:id])
    
               if(movieFound)
    
                  userMatch = (logged_in.id == movieFound.user_id)
    
                  if(userMatch)
    
                     subplaylistFound = Subplaylist.find_by_id(movieFound.subplaylist_id)
    
                     if(subplaylistFound)
    
                        @subplaylist = subplaylistFound
    
                        @movie = movieFound
    
                     else
    
                        render "public/404"
    
                     end
    
                  else
    
                     redirect_to root_path
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "update")
    
            logged_in = current_user
    
            if(logged_in)
    
               movieFound = Movie.find_by_id(params[:id])
    
               if(movieFound)
    
                  userMatch = (logged_in.id == movieFound.user_id)
    
                  if(userMatch)
    
                     subplaylistFound = Subplaylist.find_by_id(movieFound.subplaylist_id)
    
                     if(subplaylistFound)
    
                        @movie = movieFound
    
                        if(@movie.update_attributes(params[:movie]))
    
                           @subplaylist = subplaylistFound
    
                           flash[:success] = 'Movie was successfully updated.'
    
                           redirect_to subplaylist_movie_path(@subplaylist, @movie)
    
                        else
    
                           render "edit"
    
                        end
    
                     else
    
                        render "public/404"
    
                     end
    
                  else
    
                     redirect_to root_path
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "destroy")
    
            logged_in = current_user
    
            if(logged_in)
    
               movieFound = Movie.find_by_id(params[:id]) #Need to move this below the admin section to protect it
    
               if(movieFound)
    
                  if(logged_in.admin)
    
                     subplaylistFound = Subplaylist.find_by_id(movieFound.subplaylist_id)
    
                     if(subplaylistFound)
    
                        @movie = movieFound
    
                        @subplaylist = subplaylistFound
    
                        @movie.destroy
    
                        redirect_to mainplaylist_subplaylist_path(@subplaylist.mainplaylist, @subplaylist)
    
                     else
    
                        render "public/404"
    
                     end
    
                  else
    
                     redirect_to root_path
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "review") #Admin
    
            logged_in = current_user
    
            if(logged_in)
    
               if(logged_in.admin)
    
                  allMovies = Movie.all
    
                  moviesToReview = allMovies.select{|movie| !movie.reviewed}
    
                  @movies = Kaminari.paginate_array(moviesToReview).page(params[:page]).per(10)
    
               else
    
                  typeFound = Usertype.find_by_user_id(logged_in.id)
    
                  if(typeFound.privilege == "Reviewer")
    
                     allMovies = Movie.all
    
                     moviesToReview = allMovies.select{|movie| !movie.reviewed}
    
                     @movies = Kaminari.paginate_array(moviesToReview).page(params[:page]).per(10)
    
                  else
    
                     redirect_to root_path
    
                  end
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "approve") #Admin
    
            logged_in = current_user
    
            if(logged_in)
    
               if(logged_in.admin)
    
                  movieApproved
    
               else
    
                  typeFound = Usertype.find_by_user_id(logged_in.id)
    
                  if(typeFound.privilege == "Reviewer")
    
                     movieApproved
    
                  else
    
                     redirect_to root_path
    
                  end
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "deny") #Admin
    
            logged_in = current_user
    
            if(logged_in)
    
               if(logged_in.admin)
    
                  movieDenied
    
               else
    
                  typeFound = Usertype.find_by_user_id(logged_in.id)
    
                  if(typeFound.privilege == "Reviewer")
    
                     movieDenied
    
                  else
    
                     redirect_to root_path
    
                  end
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         end
    
      end
    
end

    Here is the subplaylists show code

    &lt;% provide(:title, "Subplaylist: The place where users videos gets uploaded to!") %>
    
&lt;% provide(:keywords, "user, video, uploaded") %>
    
&lt;% provide(:description, "Allows the categorization of various videos that the user submitted successfully.") %>
    
<p>&lt;%= notice %></p>
    
<h1 class="pageheader">&lt;%= @subplaylist.title %></h1>
    
<br />
    
<p class="pagetext">&lt;%= @subplaylist.description %></p>
    
<br />
    
<div class="pagebox">&lt;%= paginate @movies %></div>
    

    

    

    

    

    
<br />
    
<div class="pagetext">
    
   &lt;% @movies.each_with_index do |movie, index| %>
    
      <div class="container">
    
         <div class="inner">
    
            <div class="inner">&lt;%= link_to movie.title, subplaylist_movie_path(@subplaylist, movie) %></div>
    
            &lt;% if current_user &amp;&amp; (current_user.id == movie.user_id || current_user.admin? )%>
    
               <div class="inner">&lt;%= button_to 'Edit', edit_subplaylist_movie_path(@subplaylist, movie), method: :get %></div>
    
               <div class="inner">&lt;%= button_to 'Destroy', [@subplaylist, movie], method: :delete, data: { confirm: 'Are you sure?' } %></div>
    
            &lt;% end %>
    
            <p>&lt;%= video_tag movie.video_url(:thumb).to_s, controls: true %></p>
    
         </div>
    
         <br />
    
         <p>Created on: &lt;%= movie.created_on.strftime("%B-%d-%Y") %></p>
    
         <p>Owner: &lt;%= getType(movie.user) %>&lt;%= link_to movie.user.vname, user_path(movie.user) %></p>
    
      </div>
    
      &lt;% if ((index + 1) % 3) == 0 %>
    
         <br />
    
         <br />
    
      &lt;% end %>
    
   &lt;% end %>
    
</div>
    
<br />
    
&lt;% if current_user %>
    
   <p class="pagetext">&lt;%= link_to "New Movie", new_subplaylist_movie_path(@subplaylist) %></p>
    
   <br />
    
&lt;% end %>
    
<p class="pagetext">&lt;%= link_to 'Back', user_mainplaylist_path(@mainplaylist.user.vname, @subplaylist.mainplaylist.title) %></p>

    Here is the subplaylists model

    class Subplaylist &lt; ActiveRecord::Base
    
   attr_accessible :title, :description, :collab_mode
    
   belongs_to :user
    
   belongs_to :mainplaylist
    
   has_many :movies, :foreign_key => "subplaylist_id", :dependent => :destroy
    
   VALID_NAME = /\A[A-Za-z][A-Za-z1-9][A-Za-z1-9 ]+\z/
    
   validates :title, presence: true, format: {with: VALID_NAME}
    
   validates :description, presence: true
    
end

    Here is the subplaylists controller code

    class SubplaylistsController &lt; ApplicationController
    
   include SubplaylistsHelper
    

    
   def index
    
      mode "index"
    
   end
    

    
   def show
    
      mode "show"
    
   end
    

    
   def new
    
      mode "new"
    
   end
    

    
   def edit
    
      mode "edit"
    
   end
    

    
   def create
    
      mode "create"
    
   end
    

    
   def update
    
      mode "update"
    
   end
    

    
   def destroy
    
      mode "destroy"
    
   end
    
end

    Here is the subplaylist helper code

    module SubplaylistsHelper
    

    
   def mode(type)
    
      code = auto_logout
    
      if(code == true)
    
         sign_out
    
         redirect_to root_path
    
      else
    
         #Check if Maintenance is turned_on
    
         allmode = Maintenancemode.find_by_id(1)
    
         subplaylistmode = Maintenancemode.find_by_id(18)
    
         mode_turned_on = (allmode.maintenance_on || subplaylistmode.maintenance_on)
    
         #Determine if any maintenance is on
    
         if(mode_turned_on)
    
            #Determine if we are a regular user
    
            regularUser = (!current_user || !current_user.admin?)
    
            if(regularUser)
    
               #Determine which maintenance mode is on
    
               if(allmode.maintenance_on)
    
                  redirect_to maintenance_path
    
               else
    
                  redirect_to subplaylists_maintenance_path
    
               end
    
            else
    
               switch type
    
            end
    
         else
    
            switch type
    
         end
    
      end
    
   end
    

    
   private
    
      def getType(user)
    
         if(user.admin)
    
            value = "$"
    
         else
    
            typeFound = Usertype.find_by_user_id(user.id)
    
            if(typeFound)
    
               type = typeFound.privilege
    
               if(type == "Reviewer")
    
                  value = "^"
    
               elsif(type == "Banned")
    
                  value = "!"
    
               else
    
                  value = "~"
    
               end
    
            else
    
               value = "~"
    
            end
    
         end
    
         return value
    
      end
    

    
      def switch(type)
    
         if(type == "show")
    
            subplaylistFound = Subplaylist.find_by_id(params[:id])
    
            if(subplaylistFound)
    
               mainplaylistFound = Mainplaylist.find_by_title(params[:mainplaylist_id])
    
               if(mainplaylistFound)
    
                  playlistMatch = (subplaylistFound.mainplaylist_id == mainplaylistFound.id)
    
                  if(playlistMatch)
    
                     @mainplaylist = mainplaylistFound
    
                     @subplaylist = subplaylistFound
    
                     subplaylistMovies = @subplaylist.movies.all
    
                     reviewedMovies = subplaylistMovies
    
                     if(subplaylistMovies.count > 0)
    
                        reviewedMovies = subplaylistMovies.select{|movie| movie.reviewed}
    
                     end
    
                     @movies = Kaminari.paginate_array(reviewedMovies).page(params[:page]).per(10)
    
                  else
    
                     redirect_to root_path
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         elsif(type == "destroy")
    
            logged_in = current_user
    
            if(logged_in)
    
               subplaylistFound = Subplaylist.find_by_id(params[:id]) #Need to move this below the admin section to protect it
    
               if(subplaylistFound)
    
                  if(logged_in.admin)
    
                     mainplaylistFound = Mainplaylist.find_by_id(subplaylistFound.mainplaylist_id)
    
                     if(mainplaylistFound)
    
                        @subplaylist = subplaylistFound
    
                        @mainplaylist = mainplaylistFound
    
                        @subplaylist.destroy
    
                        redirect_to mainplaylist_subplaylists_path(@mainplaylist)
    
                     else
    
                        render "public/404"
    
                     end
    
                  else
    
                     redirect_to root_path
    
                  end
    
               else
    
                  render "public/404"
    
               end
    
            else
    
               redirect_to root_path
    
            end
    
         end
    
      end
    
end

    Here is the User model

    class User &lt; ActiveRecord::Base
    
   attr_accessible :email, :first_name, :last_name, :login_id, :vname, :password, :password_confirmation, :avatar
    
   has_secure_password
    
   mount_uploader :avatar, AvatarUploader
    
   before_save { |user| user.email = user.email.downcase }
    
   before_save { |user| user.first_name = user.first_name.humanize }
    

    
   #key
    
   has_one :sessionkey, :foreign_key => "user_id", :dependent => :destroy
    
   has_one :usertype, :foreign_key => "user_id", :dependent => :destroy
    

    
   #Video section
    
   has_many :mainplaylists, :foreign_key => "user_id", :dependent => :destroy
    
   has_many :subplaylists, :foreign_key => "user_id", :dependent => :destroy
    
   has_many :movies, :foreign_key => "user_id", :dependent => :destroy
    

    
   #validates :first_name, presence: true
    
   VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
    
   VALID_NAME_REGEX = /\A[a-z][a-z][a-z]+\z/i
    
   VALID_VNAME_REGEX = /\A[A-Za-z][A-Za-z][A-Za-z][A-Za-z0-9 ]+([-][A-Za-z0-9 ]+)?\z/
    
   VALID_PASSWORD_REGEX = /\A[A-Za-z0-9!][A-Za-z0-9!][A-Za-z0-9!][A-Za-z0-9!][A-Za-z0-9!][A-Za-z0-9!]+\z/
    
   validates :first_name, presence: true, format: { with: VALID_NAME_REGEX}
    
   validates :last_name, presence: true, format: { with: VALID_NAME_REGEX}
    
   validates :email, presence: true, format: { with: VALID_EMAIL_REGEX}
    
   validates :login_id, presence: true, format: { with: VALID_VNAME_REGEX}, uniqueness: { case_sensitive: false}
    
   validates :vname, presence: true, format: { with: VALID_VNAME_REGEX}, uniqueness: { case_sensitive: false}
    
   validates :password, length: {minimum: 6}#, format: { with: VALID_PASSWORD_REGEX}
    
   validates :password_confirmation, presence: true #, format: { with: VALID_PASSWORD_REGEX}
    

    
   def to_param
    
      vname
    
   end
    
end

    Here is the sessionkey model

    class Sessionkey &lt; ActiveRecord::Base
    
  belongs_to :user
    
end

    Here is the usertype model

    class Usertype &lt; ActiveRecord::Base
    
  attr_accessible :privilege, :user_id #Only priviledge will be changeable
    
  belongs_to :user
    
end

    Error message

    No such file or directory - ffmpeg -i /home/eric/Projects/Local/Lduelingpets/Trial/public/uploads/tmp/1466811951-3149-2702/mp4_TrialMovies.mp4

  • ffmpeg - Compare 2 AVFrames data

    17 mai 2016, par zet voo

    I have 2 AVFrame pointers

    float compareFrame(AVFrame* firstFrame, AVFrame* secondFrame)
    
{
    
    int i,j;
    
    const size_t image_size = height * width;
    
    size_t diffbytes = 0;
    

    
    for (i=0; i &lt; height; i++)
    
    {
    
        for (j=0; j &lt; width; j++) {
    
            size_t coord = firstFrame->linesize[0]*i + j;
    
            diffbytes += !!(firstFrame->data[0][coord] ^ secondFrame->data[0][coord]);
    
        }
    
    }
    
    const float percent_diff = (diffbytes / (float)image_size)*100.0;
    
    return percent_diff;
    
}

    But it seems not correct when compare the 2 same AVFrames. How to determine two AVFrames have exactly the same data or not ?

  • ffmpeg moving text drawtext

    8 avril 2016, par BOB

    I’m using ffmpeg library to draw text on video in specific time and i’m success to do that Now i need to move the text from position to another and i can’t do that so can any one suggest me how to do that

    i’m using this command to move text from top to down but i can’t determine the x and Y to move from the x,y to specific x,y

    ffmpeg -i VideoInput.mp4 -vf "drawtext=enable='between(t,12,14)':fontfile=myfont.otf:text='Test test':x=(w-text_w)/2:y=w/50\*mod(t\,2):fontsize=65" -acodec copy outputVideo.mp4

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