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• stout to textarea from ffmpeg command

  21 septembre 2014, par Brett

  Hi im trying to get the output of a ffmpeg command into a text level here is my code i am posting the lot as im brand new to java and am not sure where ive gone wrong i want to run the command and have the progress bar update and the output to show on a text area.
  any help would appreciated

  package MyPackage;
  
  import java.util.*;
  
  import java.io.BufferedReader;
  
  import java.io.File;
  
  import java.io.IOException;
  
  import java.io.InputStreamReader;
  
  import java.util.logging.Level;
  
  import java.util.logging.Logger;
  
  
  
  
  
  /**
  
   *
  
   * @author brett
  
   */
  
  public class NumberAdditionUI extends javax.swing.JFrame {
  
      private static final long serialVersionUID = 1L;
  
  
  
      /**
  
       * Creates new form NumberAdditionUI
  
       */
  
      public NumberAdditionUI() {
  
          initComponents();
  
      }
  
  
  
      /**
  
       * This method is called from within the constructor to initialize the form.
  
       * WARNING: Do NOT modify this code. The content of this method is always
  
       * regenerated by the Form Editor.
  
       */
  
      @SuppressWarnings("unchecked")
  
      // 
  
      private void initComponents() {
  
  
  
          db = new javax.swing.JFileChooser();
  
          jButton1 = new javax.swing.JButton();
  
          jButton2 = new javax.swing.JButton();
  
          jTextField1 = new javax.swing.JTextField();
  
          jButton3 = new javax.swing.JButton();
  
          jLabel1 = new javax.swing.JLabel();
  
          jProgressBar1 = new javax.swing.JProgressBar();
  
          jScrollPane1 = new javax.swing.JScrollPane();
  
          jTextArea1 = new javax.swing.JTextArea();
  
  
  
          db.setBackground(java.awt.Color.white);
  
          db.setCurrentDirectory(new java.io.File("C:\\Users\\brett\\Documents\\convert"));
  
          db.setDialogTitle("grabAFile");
  
  
  
          setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
  
          setTitle("Smoke Goobies");
  
          setMaximumSize(getPreferredSize());
  
  
  
          jButton1.setText("Exit");
  
          jButton1.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
  
          jButton1.addActionListener(new java.awt.event.ActionListener() {
  
              public void actionPerformed(java.awt.event.ActionEvent evt) {
  
                  jButton1ActionPerformed(evt);
  
              }
  
          });
  
  
  
          jButton2.setText("Browse");
  
          jButton2.addActionListener(new java.awt.event.ActionListener() {
  
              public void actionPerformed(java.awt.event.ActionEvent evt) {
  
                  jButton2ActionPerformed(evt);
  
              }
  
          });
  
  
  
          jTextField1.setText("Select A File To Covert");
  
  
  
          jButton3.setText("Run This Puppy");
  
          jButton3.addActionListener(new java.awt.event.ActionListener() {
  
              public void actionPerformed(java.awt.event.ActionEvent evt) {
  
                  jButton3ActionPerformed(evt);
  
              }
  
          });
  
  
  
          jLabel1.setFont(new java.awt.Font("Goudy Old Style", 1, 56)); // NOI18N
  
          jLabel1.setIcon(jLabel1.getIcon());
  
          jLabel1.setText("   MASHiTuP");
  
  
  
          jProgressBar1.setValue(50);
  
          jProgressBar1.setBorder(new javax.swing.border.MatteBorder(null));
  
  
  
          jTextArea1.setColumns(20);
  
          jTextArea1.setRows(5);
  
          jTextArea1.setAutoscrolls(false);
  
          jScrollPane1.setViewportView(jTextArea1);
  
  
  
          javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
  
          getContentPane().setLayout(layout);
  
          layout.setHorizontalGroup(
  
              layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  
              .addGroup(layout.createSequentialGroup()
  
                  .addContainerGap()
  
                  .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  
                      .addComponent(jProgressBar1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  
                      .addGroup(layout.createSequentialGroup()
  
                          .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
  
                              .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 355, javax.swing.GroupLayout.PREFERRED_SIZE)
  
                              .addGroup(layout.createSequentialGroup()
  
                                  .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 282, javax.swing.GroupLayout.PREFERRED_SIZE)
  
                                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
  
                                  .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 77, javax.swing.GroupLayout.PREFERRED_SIZE))
  
                              .addGroup(layout.createSequentialGroup()
  
                                  .addComponent(jButton3)
  
                                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
  
                                  .addComponent(jButton1)))
  
                          .addGap(0, 0, Short.MAX_VALUE))
  
                      .addComponent(jScrollPane1))
  
                  .addContainerGap())
  
          );
  
          layout.setVerticalGroup(
  
              layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
  
              .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
  
                  .addContainerGap()
  
                  .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE)
  
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
  
                  .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
  
                      .addComponent(jButton2)
  
                      .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
  
                  .addGap(34, 34, 34)
  
                  .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
  
                  .addGap(18, 18, 18)
  
                  .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)
  
                  .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 48, Short.MAX_VALUE)
  
                  .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
  
                      .addComponent(jButton1)
  
                      .addComponent(jButton3))
  
                  .addContainerGap())
  
          );
  
  
  
          jProgressBar1.getAccessibleContext().setAccessibleName("MYsTATUS");
  
  
  
          pack();
  
      }// 
  
  
  
      private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  
          System.exit(0);
  
      }                                        
  
  
  
      private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  
         int returnVal = db.showOpenDialog( this );
  
         File f = db.getSelectedFile();
  
          String filename = f.getAbsolutePath();
  
         jTextField1.setText(filename);
  
  
  
      }                                        
  
  
  
      private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  
          java.lang.Runtime rt = java.lang.Runtime.getRuntime();
  
          java.lang.Process proc = null;
  
          try {
  
              proc = rt.exec("ipconfig");
  
  
  
              //proc = rt.exec("ffmpeg -i C:\\Users\\brett\\Documents\\MASH_02.avi C:\\Users\\brett\\Documents\\mash09.avi");
  
          } catch (IOException ex) {
  
              Logger.getLogger(NumberAdditionUI.class.getName()).log(Level.SEVERE, null, ex);
  
          }
  
          BufferedReader stdInput = new BufferedReader(new InputStreamReader(proc.getInputStream()));
  
          BufferedReader stdError = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
  
  
  
          // read the output from the command
  
          System.out.println("Here is the standard output of the command:\n");
  
          String s;
  
          try {
  
              while ((s = stdInput.readLine()) != null) {
  
                  System.out.println(s);
  
  
  
                  jTextArea1.append(s+"\n\n");
  
  
  
              }
  
          } catch (IOException ex) {
  
              Logger.getLogger(NumberAdditionUI.class.getName()).log(Level.SEVERE, null, ex);
  
          }
  
  
  
          // read any errors from the attempted command
  
          System.out.println("Here is the standard error of the command (if any):\n");
  
          try {
  
              while ((s = stdError.readLine()) != null) {
  
                  System.out.println(s);
  
              }
  
          } catch (IOException ex) {
  
              Logger.getLogger(NumberAdditionUI.class.getName()).log(Level.SEVERE, null, ex);
  
          }
  
      }                                        
  
  
  
      /**
  
       *
  
       * @param args the command line arguments
  
       */
  
      public static void main(String args[])
  
   {
  
          /*
  
           * Set the Nimbus look and feel
  
           */
  
          //
  
          /*
  
           * If Nimbus (introduced in Java SE 6) is not available, stay with the
  
           * default look and feel. For details see
  
           * http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
  
           */
  
          try {
  
              for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
  
                  if ("Nimbus".equals(info.getName())) {
  
                      javax.swing.UIManager.setLookAndFeel(info.getClassName());
  
                      break;
  
                  }
  
              }
  
          } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
  
              java.util.logging.Logger.getLogger(NumberAdditionUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  
          }
  
          //
  
  
  
          /*
  
           * Create and display the form
  
           */
  
          java.awt.EventQueue.invokeLater(new Runnable() {
  
  
  
              @Override
  
              public void run() {
  
                  new NumberAdditionUI().setVisible(true);
  
              }
  
          });
  
      }
  
      // Variables declaration - do not modify
  
      private javax.swing.JFileChooser db;
  
      private javax.swing.JButton jButton1;
  
      private javax.swing.JButton jButton2;
  
      private javax.swing.JButton jButton3;
  
      private javax.swing.JLabel jLabel1;
  
      private javax.swing.JProgressBar jProgressBar1;
  
      private javax.swing.JScrollPane jScrollPane1;
  
      private javax.swing.JTextArea jTextArea1;
  
      private javax.swing.JTextField jTextField1;
  
      // End of variables declaration
  
  }

• ffmpeg 1FPS extraction call spits out infinite images until disk is bricked on poorly-encoded movie

  12 juillet 2017, par John Allard

  This is one of the oddest things I’ve ever seen while using ffmpeg.

  This is the scenario - we are getting video footage from a IONODE ION-E100 encoder, the footage is encoded in h264. I can view the footage fine in VLC, and I can copy it over to another video using ffmpeg and -c:v copy. The issue arises when I try and extract one FPS from the movie using the following command :

  ffmpeg -i testmovie.mp4 -r 1 -vf 640:-2 -q:v 18 -loglevel error /tmp/tmp/extraction_%04d.jpeg

  What this should do is go through the movie and extract one frame per second, then dump the frames to the files /tmp/tmp/extraction_0001.jpeg, /tmp/tmp/extraction_0002.jpeg, ..., /tmp/tmp/extraction_000X.jpeg. It should end when it reaches the end of the video.

  Now the odd thing that happens when I run this command is that it will run in a tight loop, writing tens or hundreds of thousands of images to the disk until the disk is full at which point the command fails. All of the extracted images are the exact same as one another.

  Here is the ffmpeg stats output on the video

  ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/john/ionode/test2.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      title           : /videoinput_1:0/h264_1/media.stm
  
      encoder         : Lavf57.56.100
  
    Duration: 00:00:16.52, start: -9791.427750, bitrate: 2165 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 2119 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 236 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  (notice the start: -9791.427750 value, what is this ?)

  Here are the encoding details on the footage :

  {
  
      "programs": [
  
  
  
      ],
  
      "streams": [
  
          {
  
              "index": 0,
  
              "codec_name": "h264",
  
              "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
  
              "profile": "High",
  
              "codec_type": "video",
  
              "codec_time_base": "1/50",
  
              "codec_tag_string": "avc1",
  
              "codec_tag": "0x31637661",
  
              "width": 1920,
  
              "height": 1080,
  
              "coded_width": 1920,
  
              "coded_height": 1080,
  
              "has_b_frames": 2,
  
              "sample_aspect_ratio": "1:1",
  
              "display_aspect_ratio": "16:9",
  
              "pix_fmt": "yuv420p",
  
              "level": 40,
  
              "chroma_location": "left",
  
              "refs": 1,
  
              "is_avc": "true",
  
              "nal_length_size": "4",
  
              "r_frame_rate": "25/1",
  
              "avg_frame_rate": "25/1",
  
              "time_base": "1/12800",
  
              "start_pts": 0,
  
              "start_time": "0.000000",
  
              "duration_ts": 211456,
  
              "duration": "16.520000",
  
              "bit_rate": "2119813",
  
              "bits_per_raw_sample": "8",
  
              "nb_frames": "413",
  
              "disposition": {
  
                  "default": 1,
  
                  "dub": 0,
  
                  "original": 0,
  
                  "comment": 0,
  
                  "lyrics": 0,
  
                  "karaoke": 0,
  
                  "forced": 0,
  
                  "hearing_impaired": 0,
  
                  "visual_impaired": 0,
  
                  "clean_effects": 0,
  
                  "attached_pic": 0,
  
                  "timed_thumbnails": 0
  
              },
  
              "tags": {
  
                  "language": "und",
  
                  "handler_name": "VideoHandler"
  
              }
  
          }
  
      ]
  
  }

  Here a link to the sample video to use : http://s000.tinyupload.com/?file_id=03169189167771012515
  (it’s a 5MB video file)

  The only clues I have as to what is actually going on is the error output
  from the command that grabs the video from the encoder :

  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823640, current: -630275919; changing to -629823639. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823639, current: -630274895; changing to -629823638. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 21 q=28.0 size=      41kB time=00:00:02.60 bitrate= 128.8kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823638, current: -630273871; changing to -629823637. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823637, current: -630272847; changing to -629823636. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823636, current: -630271824; changing to -629823635. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823635, current: -630270800; changing to -629823634. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 19 q=28.0 size=      43kB time=00:00:02.60 bitrate= 137.0kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823634, current: -630269776; changing to -629823633. This may result in incorrect timestamps in the output file.
  
  [aac @ 0x7faa1a832000] Queue input is backward in time
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823633, current: -630268752; changing to -629823632. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823632, current: -630267728; changing to -629823631. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823631, current: -630513833; changing to -629823630. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 18 q=28.0 size=      46kB time=00:00:02.60 bitrate= 145.4kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823630, current: -630512810; changing to -629823629. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823629, current: -630511786; changing to -629823628. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823628, current: -630510762; changing to -629823627. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823627, current: -630509738; changing to -629823626. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 17 q=28.0 size=      49kB time=00:00:02.60 bitrate= 153.6kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823626, current: -630508714; changing to -629823625. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823625, current: -630507690; changing to -629823624. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823624, current: -630506667; changing to -629823623. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823623, current: -630505643; changing to -629823622. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823622, current: -630504619; changing to -629823621. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 16 q=28.0 size=      52kB time=00:00:02.60 bitrate= 163.5kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823621, current: -630503595; changing to -629823620. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823620, current: -630502571; changing to -629823619. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823619, current: -630501548; changing to -629823618. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823618, current: -630500524; changing to -629823617. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 15 q=28.0 size=      54kB time=00:00:02.60 bitrate= 171.4kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823617, current: -630499500; changing to -629823616. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823616, current: -630498476; changing to -629823615. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823615, current: -630497452; changing to -629823614. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823614, current: -630496428; changing to -629823613. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 14 q=28.0 size=      57kB time=00:00:02.60 bitrate= 179.3kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823613, current: -630495405; changing to -629823612. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823612, current: -630494381; changing to -629823611. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823611, current: -630493357; changing to -629823610. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 13 q=28.0 size=      59kB time=00:00:02.60 bitrate= 185.6kbits/s dup=26 drop=4 spee[aac @ 0x7faa1a832000] Queue input is backward in time
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823610, current: -630492333; changing to -629823609. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823609, current: -630491309; changing to -629823608. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823608, current: -630736398; changing to -629823607. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823607, current: -630735375; changing to -629823606. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 12 q=28.0 size=      61kB time=00:00:02.60 bitrate= 193.5kbits/s dup=26 drop=4 spee[mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823606, current: -630734351; changing to -629823605. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823605, current: -630733327; changing to -629823604. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823604, current: -630732303; changing to -629823603. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823603, current: -630731279; changing to -629823602. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7faa1a83ba00] Non-monotonous DTS in output stream 0:1; previous: -629823602, current: -630730256; changing to -629823601. This may result in incorrect timestamps in the output file.
  
  frame=  124 fps= 12 q=-1.0 Lsize=     507kB time=00:00:04.84 bitrate= 858.7kbits/s dup=26 drop=4 speed=0.453x

  So my question is, why does this video break ffmpeg ? Why does ffmpeg get caught up in a tight loop extracting images without ever making any progres towards the end of the video ?

• When generating a video from images and adding audio the video isn't playable

  1er août 2017, par randommman

  So I have a bunch of images in a folder, with the following structure :

  image-0.png
  
  image-1.png
  
  image-2.png

  Sometimes the folder can have just 1 image which will be saved as :

  image-0.png

  My code to generate the video and to add the audio

  // create the file
  
  using (WaveFileReader wf = new WaveFileReader(Audio))
  
  {
  
      // the files
  
      OldVideo = "old.avi";
  
      NewVideo = "video.avi";
  
      Audio = "sound.wav";
  
  
  
      // Get the time of the audio and divide by images
  
      time = wf.TotalTime.TotalSeconds;
  
      mimtime = time / imagescount;
  
  
  
      ffmpegPath = "ffmpeg.exe";
  
      ffmpegParams = " -r 1/" + mimtime + " -i " + ImagesFolder + "image-%d.png -t " + time + " -y -vf scale=1280:-2 " + OldVideo;
  
      ffmaudioParams = " -i " + OldVideo + " -i " + Audio + " -c copy -shortest " + NewVideo;
  
  }
  
  
  
  
  
  using (Process ffmpeg = new Process())
  
  {
  
      //Generate video
  
      ffmpegstartInfo = new ProcessStartInfo();
  
      ffmpegstartInfo.FileName = ffmpegPath;
  
      ffmpegstartInfo.Arguments = ffmpegParams;
  
      ffmpegstartInfo.RedirectStandardOutput = true;
  
      ffmpegstartInfo.RedirectStandardError = true;
  
      ffmpegstartInfo.UseShellExecute = false;
  
      ffmpegstartInfo.CreateNoWindow = true;
  
  
  
      ffmpeg.StartInfo.FileName = ffmpegPath;
  
      ffmpeg.StartInfo.Arguments = ffmpegParams;
  
      ffmpeg.StartInfo = ffmpegstartInfo;
  
      ffmpeg.Start();
  
      ffmpeg.WaitForExit(30000);
  
  
  
  
  
      /*ffmpeg.StartInfo.FileName = "cmd.exe";
  
      ffmpeg.StartInfo.Arguments = "/k " + ffmpegPath + " " + ffmpegParams;
  
      ffmpeg.Start();
  
      ffmpeg.WaitForExit(30000);*/
  
  }
  
  
  
  using (Process ffmaudio = new Process())
  
  {
  
      //Add audio to video
  
      ffmaudiostartInfo = new ProcessStartInfo();
  
      ffmaudiostartInfo.FileName = ffmpegPath;
  
      ffmaudiostartInfo.Arguments = ffmaudioParams;
  
      ffmaudiostartInfo.RedirectStandardOutput = true;
  
      ffmaudiostartInfo.RedirectStandardError = true;
  
      ffmaudiostartInfo.UseShellExecute = false;
  
      ffmaudiostartInfo.CreateNoWindow = true;
  
  
  
      ffmaudio.StartInfo.FileName = ffmpegPath;
  
      ffmaudio.StartInfo.Arguments = ffmaudioParams;
  
      ffmaudio.StartInfo = ffmaudiostartInfo;
  
      ffmaudio.Start();
  
      ffmaudio.WaitForExit(30000);
  
  
  
      /*ffmaudio.StartInfo.FileName = "cmd.exe";
  
      ffmaudio.StartInfo.Arguments = "/k " + ffmpegPath + " " + ffmaudioParams;
  
      ffmaudio.Start();
  
      ffmaudio.WaitForExit(30000);*/
  
  }

  So, what my code does, with the wavfilereader it gets the total length of my audio file, and then splits that time up by the number of images I have, so I can generate a video with the images split equally. Then I generate the video to a file called ’old.avi’, which is then used with my wav file to generate a new file called video.avi (which I am trying to have the generated video and audio together)

  My problem is when I generate the video it becomes uplayable. It claims to be (for example) 1 minute 50 seconds long, but once I click it, it won’t play. It just becomes unplayable, as you can see below

  http://i.imgur.com/tsck2NX.gifv

  I am using C# with process and Winforms, which opens the cmd line to run ffmpeg, with the 2 commands called above with the named variables below :

  ffmpegParams;
  
  ffmaudioParams;

  Which has all the commands I am using

  -r 1/ (audio length /divided by total images) so they're equal
  
  -t (to limit to the total time which is the audio's total seconds)
  
  ... I am using more as you can see in my code above

  How can I fix my problem, that I have described ?

  CMD line when generating the video :

  ffmpeg version N-86848-g03a9e6f Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 68.100 / 55. 68.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 95.100 /  6. 95.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, image2, from 'C:\Users\Laptop\Documents\program/images/image-%d.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba(pc), 800x800, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> mpeg4 (native))
  
  Press [q] to stop, [?] for help
  
  [mpeg4 @ 00000000024f44a0] bitrate tolerance 4000000 too small for bitrate 200000, overriding
  
  Output #0, avi, to 'C:\Users\Laptop\Documents\program/old.avi':
  
    Metadata:
  
      ISFT            : Lavf57.76.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x1280, q=2-31, 200 kb/s, 0.01 fps, 0.01 tbn, 0.01 tbc
  
      Metadata:
  
        encoder         : Lavc57.102.100 mpeg4
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
  frame=    1 fps=0.0 q=6.8 Lsize=      46kB time=00:01:37.57 bitrate=   3.9kbits/s speed=1.43e+003x
  
  video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.641467%

  When adding the audio to the video

  ffmpeg version N-86848-g03a9e6f Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 68.100 / 55. 68.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 95.100 /  6. 95.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, avi, from 'C:\Users\Laptop\Documents\program/old.avi':
  
    Metadata:
  
      encoder         : Lavf57.76.100
  
    Duration: 00:01:37.58, start: 0.000000, bitrate: 3 kb/s
  
      Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 1280x1280 [SAR 1:1 DAR 1:1], 0.01 fps, 0.01 tbr, 0.01 tbn, 40 tbc
  
  Guessed Channel Layout for Input Stream #1.0 : mono
  
  Input #1, wav, from 'C:\Users\Laptop\Documents\program/audio.wav':
  
    Duration: 00:01:37.57, bitrate: 352 kb/s
  
      Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
  
  Output #0, avi, to 'C:\Users\Laptop\Documents\program/video.avi':
  
    Metadata:
  
      ISFT            : Lavf57.76.100
  
      Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 1280x1280 [SAR 1:1 DAR 1:1], q=2-31, 0.01 fps, 0.01 tbr, 0.01 tbn, 0.01 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    1 fps=0.0 q=-1.0 Lsize=      55kB time=00:01:37.57 bitrate=   4.6kbits/s speed=1.95e+005x
  
  video:41kB audio:4kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 21.946869%