Recherche avancée

Sur d’autres sites (7775)

• How to use random name for image file generated using ffmpeg-php ?

  13 octobre 2017, par Brains Akd

  The image is generating fine with the below code

  $thumbnail = 'images/thumbnail.jpg';
  
  
  
  // shell command [highly simplified, please don't run it plain on your script!]
  
  
  
  shell_exec("ffmpeg -i $video -deinterlace -an -ss 1 -t 00:00:01 -r 1 -y -vcodec mjpeg -f mjpeg $thumbnail 2>&1");

  But it creates a file named thumbnail.jpg
  I need to have random name for images generated to save it in the images folder and database. How can i generate a random name to thumbnail in the below code
  $thumbnail = 'images/thumbnail.jpg';

• How can I close all the threads and multiprocesses in a Tkinter app when the app closes ?

  3 septembre 2021, par kup

  I am creating a Tkinter application which starts a multiprocess.process (daeman = True) and then that process further starts a couple of threads and that thread further starts an FFmpeg process.

  


  for i, val in enumerate(group):
    threads.append(Thread(target = self.ffmpeg, args=(val, )))
    threads[i].start()


  


  But when I close the application the process does not stop. I can still see the log in the terminal after I close the application.

  


  I just want them to close when application shuts down.

  


  I also tried :

  


  sys.exit()


  


• How to add watermark while record video using ffmpeg

  7 décembre 2017, par Hitesh Gehlot

  I am recording square video using following ffmpeg library. Square Video recorded successfully with audio but now i want to add watermark on video but my application crashed and getting error. Please help me how can i add watermark while record video.

  Gradle dependency

  compile(group: 'org.bytedeco', name: 'javacv-platform', version: '1.3') {
  
      exclude group: 'org.bytedeco.javacpp-presets'
  
  }
  
  compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3'
  
  compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3', classifier: 'android-arm'

  I am using following code for add watermark while record video

       // add water mark
  
              String imgPath = audioPath + "jodelicon.png";
  
              String watermark = "movie=" + imgPath + " [logo];[in][logo]overlay=0:0:1:format=rgb [out]";
  
              filters.add(watermark);

  Complete Code

   class VideoRecordThread extends Thread {
  
  
  
          private boolean isRunning;
  
  
  
          @Override
  
          public void run() {
  
              List<string> filters = new ArrayList&lt;>();
  
              // Transpose
  
              String transpose = null;
  
              android.hardware.Camera.CameraInfo info =
  
                      new android.hardware.Camera.CameraInfo();
  
              android.hardware.Camera.getCameraInfo(mCameraId, info);
  
              if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
  
                  switch (info.orientation) {
  
                      case 270:
  
  //                        transpose = "transpose=clock_flip"; // Same as preview display
  
                          transpose = "transpose=cclock"; // Mirrored horizontally as preview display
  
                          break;
  
                      case 90:
  
  //                        transpose = "transpose=cclock_flip"; // Same as preview display
  
                          transpose = "transpose=clock"; // Mirrored horizontally as preview display
  
                          break;
  
                  }
  
              } else {
  
                  switch (info.orientation) {
  
                      case 270:
  
                          transpose = "transpose=cclock";
  
                          break;
  
                      case 90:
  
                          transpose = "transpose=clock";
  
                          break;
  
                  }
  
              }
  
              if (transpose != null) {
  
                  filters.add(transpose);
  
              }
  
              // Crop (only vertically)
  
              int width = previewHeight;
  
              int height = width * videoHeight / videoWidth;
  
              String crop = String.format("crop=%d:%d:%d:%d",
  
                      width, height,
  
                      (previewHeight - width) / 2, (previewWidth - height) / 2);
  
  
  
              filters.add(crop);
  
              // Scale (to designated size)
  
  
  
              String scale = String.format("scale=%d:%d", videoHeight, videoWidth);
  
              filters.add(scale);
  
  
  
              // add water mark
  
              String imgPath = audioPath + "jodelicon.png";
  
              String watermark = "movie=" + imgPath + " [logo];[in][logo]overlay=0:0:1:format=rgb [out]";
  
              filters.add(watermark);
  
  
  
              FFmpegFrameFilter frameFilter = new FFmpegFrameFilter(TextUtils.join(",", filters),
  
                      previewWidth, previewHeight);
  
              frameFilter.setPixelFormat(avutil.AV_PIX_FMT_NV21);
  
              frameFilter.setFrameRate(frameRate);
  
              try {
  
                  frameFilter.start();
  
              } catch (FrameFilter.Exception e) {
  
                  e.printStackTrace();
  
              }
  
  
  
              isRunning = true;
  
              FrameToRecord recordedFrame;
  
  
  
              while (isRunning || !mFrameToRecordQueue.isEmpty()) {
  
                  try {
  
                      recordedFrame = mFrameToRecordQueue.take();
  
                  } catch (InterruptedException ie) {
  
                      ie.printStackTrace();
  
                      try {
  
                          frameFilter.stop();
  
                      } catch (FrameFilter.Exception e) {
  
                          e.printStackTrace();
  
                      }
  
                      break;
  
                  }
  
  
  
                  if (mFrameRecorder != null) {
  
                      long timestamp = recordedFrame.getTimestamp();
  
                      if (timestamp > mFrameRecorder.getTimestamp()) {
  
                          mFrameRecorder.setTimestamp(timestamp);
  
                      }
  
                      long startTime = System.currentTimeMillis();
  
  //                    Frame filteredFrame = recordedFrame.getFrame();
  
                      Frame filteredFrame = null;
  
                      try {
  
                          frameFilter.push(recordedFrame.getFrame());
  
                          filteredFrame = frameFilter.pull();
  
                      } catch (FrameFilter.Exception e) {
  
                          e.printStackTrace();
  
                      }
  
                      try {
  
                          mFrameRecorder.record(filteredFrame);
  
                      } catch (FFmpegFrameRecorder.Exception e) {
  
                          e.printStackTrace();
  
                      }
  
                      long endTime = System.currentTimeMillis();
  
                      long processTime = endTime - startTime;
  
                      mTotalProcessFrameTime += processTime;
  
                      Log.d(LOG_TAG, "This frame process time: " + processTime + "ms");
  
                      long totalAvg = mTotalProcessFrameTime / ++mFrameRecordedCount;
  
                      Log.d(LOG_TAG, "Avg frame process time: " + totalAvg + "ms");
  
                  }
  
                  Log.d(LOG_TAG, mFrameRecordedCount + " / " + mFrameToRecordCount);
  
                  mRecycledFrameQueue.offer(recordedFrame);
  
              }
  
          }
  
  
  
          public void stopRunning() {
  
              this.isRunning = false;
  
              if (getState() == WAITING) {
  
                  interrupt();
  
              }
  
          }
  
  
  
          public boolean isRunning() {
  
              return isRunning;
  
          }
  
      }
  
  </string>

  Error in logcat

  android A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x18 in tid 320 (Thread-24542)