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Autres articles (79)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (14351)

  • reduce bitrate using ffmpeg

    27 mai 2017, par WantIt

    I have this command to run with ffmpeg to reduce bitrate.

    ffmpeg -y -i input.mp4 -b:v 1024k output_1024k.mp4

    where we want to take the input file and just reduced it’s bitrate (just 1024k). It works in the commandline.
    Now, I like to reduce bitrate via Java. I decided to use bytedeco/javacv FFmpegFrameGrabber and FFmpegFrameRecorder to perform the same function. Below is my code :

    FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("input.mp4");
    
            grabber.start();
    

    
            FrameRecorder recorder = new FFmpegFrameRecorder("out.mp4", grabber.getAudioChannels());
    
            recorder.setSampleRate(256);
    
            recorder.start();
    

    
            Frame frame;
    
            while ((frame = grabber.grabFrame()) != null) {
    
                recorder.record(frame);
    
            }
    
            recorder.stop();
    
            grabber.stop();

    but it is saying the following error :

    org.bytedeco.javacv.FrameRecorder$Exception: avcodec_open2() error -22: Could not open audio codec.
    
    at org.bytedeco.javacv.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:732)
    
    at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:351)
    
    at com.goxhere.api.monte.resources.VideoResource.uploadFile(VideoResource.java:337)
    
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    
    at java.lang.reflect.Method.invoke(Method.java:498)
    
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:74)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
    
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:247)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:388)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:346)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
    
    at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:337)
    
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:280)
    
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:316)
    
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1084)
    
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:418)
    
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
    
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
    
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    
    at java.lang.Thread.run(Thread.java:748)

    Basically the error says I have problem with audio codec, but when I tried to run the ffmpeg commandline directly, it reduces the bitrate just fine. Are we missing some setup in javacode ? Thank you.

  • reduce bitrate using ffmpeg

    21 mai 2017, par WantIt

    I have this command to run with ffmpeg to reduce bitrate.

    ffmpeg -y -i input.mp4 -b:v 1024k output_1024k.mp4

    where we want to take the input file and just reduced it’s bitrate (just 1024k). It works in the commandline.
    Now, I like to reduce bitrate via Java. I decided to use bytedeco/javacv FFmpegFrameGrabber and FFmpegFrameRecorder to perform the same function. Below is my code :

    FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("input.mp4");
    
            grabber.start();
    

    
            FrameRecorder recorder = new FFmpegFrameRecorder("out.mp4", grabber.getAudioChannels());
    
            recorder.setSampleRate(256);
    
            recorder.start();
    

    
            Frame frame;
    
            while ((frame = grabber.grabFrame()) != null) {
    
                recorder.record(frame);
    
            }
    
            recorder.stop();
    
            grabber.stop();

    but it is saying the following error :

    org.bytedeco.javacv.FrameRecorder$Exception: avcodec_open2() error -22: Could not open audio codec.
    
    at org.bytedeco.javacv.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:732)
    
    at org.bytedeco.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:351)
    
    at com.goxhere.api.monte.resources.VideoResource.uploadFile(VideoResource.java:337)
    
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    
    at java.lang.reflect.Method.invoke(Method.java:498)
    
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:74)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
    
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:247)
    
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:388)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:346)
    
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
    
    at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:337)
    
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:280)
    
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:316)
    
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1084)
    
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:418)
    
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:372)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
    
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
    
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
    
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    
    at java.lang.Thread.run(Thread.java:748)

    Basically the error says I have problem with audio codec, but when I tried to run the ffmpeg commandline directly, it reduces the bitrate just fine. Are we missing some setup in javacode ? Thank you.

  • Uploading videos on rails website

    16 mai 2017, par Dinukaperera

    I am trying to let my users upload videos on my website(not deployed yet, testing locally). I have it set up in a manner where if the "user information" gets saved, it will take them to the "root_path", which is the homepage. If the user information is not saved, it will render the form again. Before I added the video upload feature, all the information got saved and everything worked well, but after adding the feature, it keeps rendering the same form over and over again since the information is not getting saved. How do I check what’s wrong ? The command line gives me this error : Error screenshot

    The user information form partial :
    `

    <%= simple_form_for @userinfo do |f| %>
    
  <%= f.input :name, label: 'Full name', error: 'Full name is mandatory' %>
    
  <%= f.input :username, label: 'Username', error: 'Username is mandatory, please specify one' %>
    
  <%= f.input :school, label: 'Name of college' %>
    
  <%= f.input :gpa, label: 'Enter GPA' %>
    
  <%= f.input :email, label: 'Enter email address' %>
    
  <%= f.input :number, label: 'Phone number' %>
    
  <%= f.file_field :video %>
    
  <%= f.button :submit %>
    
<% end %>

    `

    My user controller (This is the user information controller, does not control user email and password. I’m using the devise gem for user sign in, sign out, and sign up) :`

    class UsersController < ApplicationController
    
    def index
    
    end
    

    
    def show
    
    end
    

    
    def new
    
        @userinfo = User.new
    
    end
    

    
    def create
    
        @userinfo = User.new(user_params)
    
        if @userinfo.save
    
          redirect_to root_path
    
        else
    
          render 'new'
    
        end
    
    end
    

    
    def edit
    
    end
    

    
    def update
    
    end
    

    
    def destroy
    
    end
    

    
    private
    
        def user_params
    
            params.require(:user).permit(:name, :username, :email, :number, :school, :gpa, :major, :video)
    
        end
    
end

    `

    This is the user model (usermain is the model related to user password and email. The user information in the user model belongs to the usermain) : `

    class User < ActiveRecord::Base
    
    belongs_to :usermain
    

    
    has_attached_file :video, styles: {:video_show => {:geometry => "640x480",:format => 'mp4'},:video_index => { :geometry => "160x120", :format => 'jpeg', :time => 10}}, :processors => [:transcoder]
    
    validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
    
end

    `

    This is the migration file that creates the user information table :`

    class CreateUsers < ActiveRecord::Migration
    
  def change
    
    create_table :users do |t|
    
      t.string :name
    
      t.string :username
    
      t.string :email
    
      t.string :number
    
      t.string :school
    
      t.string :gpa
    
      t.string :major
    

    
      t.timestamps null: false
    
    end
    
  end
    
end
    This is adding the "video" field to the above created user information table:
    class AddAttachmentVideoToUsers < ActiveRecord::Migration
    
  def self.up
    
    change_table :users do |t|
    
      t.attachment :video
    
    end
    
  end
    

    
  def self.down
    
    remove_attachment :users, :video
    
  end
    
end

    `

    I also have paperclip and ffmpeg installed. When I say installed, it’s literally just that. I’m not sure if I have to manipulate paperclip or ffmpeg in any way to make it work with the videos, I have just installed and did nothing else with them. I have been pulling my hair out for the past two days. Any help is appreciated.

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