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• How to generate the images sequence for video

  24 mai 2014, par Albert Li

  I want to make a simple video editor to create the video from some images.
  It have some transform effects such as motion, scale, fade etc...

  I tried to create the images per frame using ImageMagick and create the video using ffmpeg.

  But it doens’t move smoothly, seems to be kind of jaggy when it moves.

  For example, for 10s x 30fps video, it needs 300 images. Source image should to move 300px.

  The image in the result video moved 1px by 1px.

  How to generate the images sequence for smooth motion effect to make a video ?

• Pipe series of images from java application to ffmpeg subprocess

  20 juin 2014, par Marco

  I am looking for a way to stream series of images (jpegs) from java application into FFMpeg STDIN pipe.
  FFMpeg should process these images and create a video file as an output.

  FFMpeg is executed as sub process of java application with the following command "ffmpeg.exe -i pipe:0 out.avi"

  When i run "ffmpeg -i input.jpg out.avi" command in the console, i get the "out.avi" file as expected

  But when i use the following tester code in my java application, i got an error.

  Code in Java application :

  File ffmpeg_output_msg = new File("ffmpeg_output_msg.txt");
  
  ProcessBuilder pb = new ProcessBuilder(
  
          "ffmpeg.exe","-i","pipe:0","out.avi");
  
  pb.redirectErrorStream(true);
  
  pb.redirectOutput(ffmpeg_output_msg);
  
  pb.redirectInput(ProcessBuilder.Redirect.PIPE);
  
  Process p = pb.start();
  
  OutputStream ffmpegInput = p.getOutputStream();
  
  
  
  byte[] image;
  
  File file = new File("input.jpg");
  
  image = new byte[(int)file.length()];
  
  
  
  FileInputStream fileInputStream = new FileInputStream(file);
  
  fileInputStream.read(image);
  
  
  
  ImageInputStream iis = ImageIO.createImageInputStream(
  
          new ByteArrayInputStream(image));
  
  BufferedImage img = ImageIO.read(iis);
  
  
  
  ImageIO.write(img, "JPEG", ffmpegInput);

  FFMpeg output :

  ffmpeg version N-59664-g94cf4f8 Copyright (c) 2000-2014 the FFmpeg developers built on Jan 7 2014 22:07:02 with gcc 4.8.2 (GCC)
  configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libx264 —enable-libxavs —enable-libxvid —enable-zlib

  libavutil      52. 62.100 / 52. 62.100
  
  libavcodec     55. 47.100 / 55. 47.100
  
  libavformat    55. 22.102 / 55. 22.102
  
  libavdevice    55.  5.102 / 55.  5.102
  
  libavfilter     4.  0.103 /  4.  0.103
  
  libswscale      2.  5.101 /  2.  5.101
  
  libswresample   0. 17.104 /  0. 17.104
  
  libpostproc    52.  3.100 / 52.  3.100

  pipe: : Invalid data found when processing input

  Any ideas how to make it work ?

  Thank you very much for your time.

• Adding images to the end of the video

  13 janvier 2014, par Kaushik DB

  common_video.avi
  image1.jpg
  image2.jpg

  i want to insert these two images to the end of the video name common_video.avi programatically in c# so that the image shows for like 5 seconds after the video ends, what's the best way to achieve it ? I have looked in to ffmpeg, with and without c# wrappers, but still nothing works. I keep getting errors and exceptions.

  here's a piece of code i have tried

  using System;
  
  using System.Collections.Generic;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading;
  
  //using AForge;
  
  //using AForge.Video.VFW;
  
  using AForge.Video.FFMPEG;
  
  using AviFile;
  
  using System.Drawing;
  
  
  
  namespace Ffmpeg
  
  {
  
      class Program
  
      {
  
          static void Main(string[] args)
  
          {
  
  
  
  
  
  
  
  
  
  
  
  
  
              var Strings = new string[] { "1.jpg", "2.jpg", "3.jpg" };
  
  
  
              //VideoFileWriter W = new VideoFileWriter();
  
              //W.Open("../../Out/new.avi", 1920, 1200, 1, VideoCodec.Raw, 4400);
  
              //foreach (var S in Strings)
  
              //{
  
              //    for (int I = 2 * 25; I > 0; I--)
  
              //        W.WriteVideoFrame((Bitmap)Image.FromFile(S));
  
              //}
  
              //W.Close();
  
  
  
  
  
  
  
              //load the first image
  
              Bitmap bitmap = (Bitmap)Image.FromFile(Strings[0]);
  
              //create a new AVI file
  
              AviManager aviManager =
  
                  new AviManager(@"..\..\out\new.avi", false);
  
              //add a new video stream and one frame to the new file
  
              VideoStream aviStream =
  
                  aviManager.AddVideoStream(false, 1, bitmap);
  
  
  
              //Bitmap bitmap;
  
              for (int n = 1; n < Strings.Length; n++)
  
              {
  
                  if (Strings[n].Trim().Length > 0)
  
                  {
  
                      bitmap =
  
                         (Bitmap)Bitmap.FromFile(Strings[n]);
  
                      //for (int I = 2 * 25; I > 0; I--)
  
                          aviStream.AddFrame(bitmap);
  
                      bitmap.Dispose();
  
                  }
  
              }
  
              aviManager.Close();
  
          }
  
      }
  
  }

  Ffmpeg throws : "error configuring filters" ;