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• FFMPEG, How to concat mp4 files with different fps to create final video with different fps

  9 octobre 2019, par Newbie Engineer

  I am using following commands

  images to video

  ffmpeg.exe -r 5 -f image2 -s 960x720 -i D :/images%2d.PNG -vcodec libx264 -crf 25 -pix_fmt yuv420p D :/tester.mp4

  I created several mp4 with different fps(5, 10, 15, 20...), and created a list of mp4 files name with different FPS, then tried to concat using

  ffmpeg -f concat -i D :/mylist.txt -c copy final.mp4

  But this is not concatenating properly, last couple of mp4 files are not being joined properly and there is always two or three seconds gap between each joined mp4 files. Wondering if any one has dealt with this issue. I want to keep the FPS of each single mp4 files as it is, trying to get smooth final video with progressing fps like 5, 10, 15, 20.. FPS).

  FFMPEG version 4.2.1, (no audio involved)

• Extracting frames from image in C#

  12 août 2015, par Atom Scott

  I`ve seen some stackover flow on how to do this but i cant get it to work for myself in visual studio.

  What is wrong with code ? I have downloaded FFMpeg and im using it as reference. yet, I get the error

  "Could not load file or assembly Aforge.Video.FFMPEG. dll or one of
  its dependencies"

  Here is the code.

  using System;
  
  using System.Collections.Generic;
  
  using System.ComponentModel;
  
  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  using AForge;
  
  using AForge.Video;
  
  using AForge.Video.FFMPEG;
  
  
  
  namespace WindowsFormsApplication6
  
  {
  
  public partial class Form1 : Form
  
  {
  
      public Form1()
  
      {
  
          InitializeComponent();
  
      }
  
  
  
      private void button1_Click(object sender, EventArgs e)
  
      {
  
          // create instance of video reader
  
          VideoFileReader reader = new VideoFileReader( );
  
          // open video file
  
          reader.Open( "test.avi" );
  
          // read 100 video frames out of it
  
          for ( int i = 0; i < 100; i++ )
  
          {
  
          Bitmap videoFrame = reader.ReadVideoFrame( );
  
  
  
          videoFrame.Save(i + ".bmp");
  
  
  
          // dispose the frame when it is no longer required
  
          videoFrame.Dispose( );
  
          }
  
          reader.Close( );
  
      }
  
  } 
  
  }

  The program stop when i click the button and comes with an error.

• Revision 79003 : Pipeline "afficher_contenu_objet" : prendre en compte le cas où ...

  30 novembre 2013, par tcharlss@… — Log

  Pipeline "afficher_contenu_objet" : prendre en compte le cas où l’identifiant de l’objet n’est pas donné par $fluxargs ?id_objet ? mais par $fluxargs ?contexte ?id ?.
  Problème constaté sur la fiche d’une commande.
  ps : De plus, l’exemple du site ​http://programmer.spip.net/afficher_contenu_objet,434 récupère l’identifiant avec $fluxargs ?id ?…