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• doc/APIchanges : Document addition of list BSF API in lavc

  16 août 2016, par Jan Sebechlebsky

  doc/APIchanges : Document addition of list BSF API in lavc
  Signed-off-by : Jan Sebechlebsky <sebechlebskyjan@gmail.com>
  
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] doc/APIchanges

• ffmpeg - filter_complex list too long

  2 mars 2016, par Baumi

  Let’s say I want to overlay a clock in the video using special font, color, etc to video that is aprox 30 min long. I end up with command :

  ffmpeg -y -i in.mp4 -filter_complex "
  
  [0:v]drawtext=fontfile=/var/www/sites/manage/elements/digital-7.ttf:text='00\:00':fontcolor=white@1.0:fontsize=26:x=100:y=65:enable='between(t,0,7)'[tmp];
  
  [tmp]drawtext=fontfile=/var/www/sites/manage/elements/digital-7.ttf:text='00\:01':fontcolor=white@1.0:fontsize=26:x=100:y=65:enable='between(t,7,8)'[tmp]; 
  
  [tmp]drawtext=fontfile=/var/www/sites/manage/elements/digital-7.ttf:text='00\:02':fontcolor=white@1.0:fontsize=26:x=100:y=65:enable='between(t,8,9)'[tmp]; 
  
  [tmp]drawtext=fontfile=/var/www/sites/manage/elements/digital-7.ttf:text='00\:03':fontcolor=white@1.0:fontsize=26:x=100:y=65:enable='between(t,9,10)'[tmp]; 
  
  [tmp]drawtext=fontfile=/var/www/sites/manage/elements/digital-7.ttf:text='00\:04':fontcolor=white@1.0:fontsize=26:x=100:y=65:enable='between(t,10,11)'[tmp];
  
  ......." 
  
  -map "[tmp]" -map 0:a -acodec copy -c:v h264 out.mp4

  This clock is not the only overlay I have so finally I have end up with command 216kB long but this I cannot even run in bash because of argument list being too long.

  I wanted to re-encode the video only once. Is there any other way I can do that ?

  Thanks !

• i want make a video from list of bitmaps by ffmpegframerecorder

  3 mars 2016, par Muhammad Nasser

  this code to record images from sdcard i want to get the frames from array of bitmaps.

  new AsyncTask() {
  
              ProgressDialog dialog;
  
              protected void onPreExecute() {
  
                  dialog = new ProgressDialog(MainActivity.this);
  
                  dialog.setMessage("Genrating video, Please wait.........");
  
                  dialog.setCancelable(false);
  
                  dialog.show();
  
              };
  
  
  
              @Override
  
              protected Void doInBackground(Void... arg0) {
  
  
  
                  File folder = Environment
  
                          .getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
  
                  String path = folder.getAbsolutePath() + "/Camera";
  
                  ArrayList<string> paths = (ArrayList<string>) getListOfFiles(
  
                          path, "jpg");
  
                  FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(path
  
                          + "/" + "test.mp4", 400, 400);
  
                  videoPath = path + "/" + "test.mp4";
  
                  try {
  
                      //recorder.setVideoCodec(5);
  
                      recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);
  
                      //recorder.setFormat("3gp");
  
                      recorder.setFormat("mp4");
  
                      recorder.setFrameRate(frameRate);
  
                      recorder.setVideoBitrate(30);
  
                      startTime = System.currentTimeMillis();
  
                      recorder.start();
  
                      for (int i = 0; i " + paths.get(i));
  
                          long t = 3000 * (System.currentTimeMillis() - startTime);
  
                          if (t > recorder.getTimestamp()) {
  
                              recorder.setTimestamp(t);
  
                              recorder.record(image);
  
                          }
  
                      }
  
                      System.out.println("Total Time:- " + recorder.getTimestamp());
  
                      recorder.stop();
  
                  } catch (Exception e) {
  
                      e.printStackTrace();
  
                  }
  
  
  
                  return null;
  
              }
  
  
  
              protected void onPostExecute(Void result) {
  
                  dialog.dismiss();
  
                  Intent intent = new Intent(Intent.ACTION_VIEW); 
  
                  intent.setDataAndType(Uri.parse(videoPath), "video/mp4");
  
                  startActivity(intent);
  
                  File file = new File(selectedFilePath);
  
                  boolean deleted = file.delete();
  
                  Toast.makeText(MainActivity.this, "Done", Toast.LENGTH_SHORT)
  
                          .show();
  
              };
  
          }.execute();
  
  </string></string>