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• how to encoded a 10bit .tif file into an HDR video by ffmpeg in command line [closed]

  6 juin 2024, par ziyuan

  how can i encoded a RGB 10 bit tif file into a hdr video by ffmpeg ?

  


  and one more question : should the input tiff must be 16bit big- or little- endian ?

  


  i have try the method here : How can I encode RGB images into HDR10 videos in ffmpeg command-line ?
,the same command and setting as the method. However i got this : code 1026 : YUV color family cannot have RGB matrix coefficients

  


  here is the tiff file i have tried :https://drive.google.com/file/d/1G8oYf9-FQJJPNUxwB0_FmlvBaMnUhCVL/view?usp=drive_link

  


  and i found that :
the procedure information it seems like the ffmpeg automatically set the output format as gbrp16le even when i set the -pix_fmt yuv420p10le.

  


• Where do I find the Saved Image in Android ?

  29 octobre 2016, par FirstStep

  Excuse me, quick question :

  I have this routine of video stream, where I receive packets, convert them to byte[] ,then to bitmaps, then display them on the screen :

  dsocket.receive(packetReceived); // receive packet
  
  byte[] buff = packetReceived.getData(); // convert packet to byte[]
  
  final Bitmap ReceivedImage = BitmapFactory.decodeByteArray(buff, 0, buff.length); // convert byte[] to bitmap image
  
  
  
  runOnUiThread(new Runnable()
  
  {
  
      @Override
  
      public void run()
  
      {
  
          // this is executed on the main (UI) thread
  
          imageView.setImageBitmap(ReceivedImage);
  
      }
  
  });

  Now, I want to implementing a Recording feature. Suggestions say I need to use FFmpeg (which I have no idea how) but first, I need to prepare a directory of the ordered images to then convert it to a video file. Do do that I will save all the images internally, and I am using this answer to save each image :

  if(RecordVideo && !PauseRecording) {
  
      saveToInternalStorage(ReceivedImage, ImageNumber);
  
      ImageNumber++;
  
  }
  
  else
  
  {
  
      if(!RecordVideo)
  
          ImageNumber = 0;
  
  }
  
  
  
  // ...
  
  
  
  private void saveToInternalStorage(Bitmap bitmapImage, int counter){
  
          ContextWrapper cw = new ContextWrapper(getApplicationContext());
  
  
  
          // path to /data/data/yourapp/app_data/imageDir
  
          File MyDirectory = cw.getDir("imageDir", Context.MODE_PRIVATE);
  
  
  
          // Create imageDir
  
          File MyPath = new File(MyDirectory,"Image" + counter + ".jpg");
  
  
  
          FileOutputStream fos = null;
  
          try {
  
              fos = new FileOutputStream(MyPath);
  
  
  
              // Use the compress method on the BitMap object to write image to the OutputStream
  
              bitmapImage.compress(Bitmap.CompressFormat.PNG, 100, fos);
  
  
  
          } catch (Exception e) {
  
              e.printStackTrace();
  
          } finally {
  
              try {
  
                  fos.close();
  
              } catch (IOException e) {
  
                  e.printStackTrace();
  
              }
  
          }
  
          //return MyDirectory.getAbsolutePath();
  
      }

  But I can’t seem to find the directory on my device (To actually see if I succeeded in creating the directory) Where is // path to /data/data/yourapp/app_data/imageDir located exactly ?

• How to stop recording dynamically in FFMPEG CLI Wrapper java

  14 décembre 2017, par user2237529

  https://github.com/bramp/ffmpeg-cli-wrapper/issues/13

  public class ScreenCaptureFFMPEG {
  
  
  
      public static void record(String outputVideo, String time) throws Exception
  
      {
  
          RunProcessFunction func = new RunProcessFunction();
  
  
  
          FFmpeg ffmpeg = new FFmpeg("C:\\FFMPEG\\ffmpeg.exe");
  
          FFmpegBuilder builder = new FFmpegBuilder()
  
                  .addExtraArgs("-rtbufsize", "1500M")
  
                  .addExtraArgs("-r", "30")
  
                  .setFormat("dshow")
  
                  .setInput("video=\"screen-capture-recorder\"")
  
                  .addOutput(outputVideo)
  
                  .setFormat("mp4")
  
                  .addExtraArgs("-crf", "0")
  
                  .setVideoCodec("libx264")
  
                  //.addExtraArgs("-ac", "1")
  
                  .addExtraArgs("-y")
  
          //overwrite file name
  
  
  
                  // .setAudioCodec("libmp3lame")
  
                  // .setAudioSampleRate(FFmpeg.AUDIO_SAMPLE_44100)
  
                  //  .setAudioBitRate(1_000_000)
  
  
  
                  //.addExtraArgs("-ar", "44100")
  
                  .addExtraArgs("-t", time)
  
  
  
                  //.setVideoPixelFormat("yuv420p")
  
                  //.setVideoResolution(426, 240)
  
                  //.setVideoBitRate(2_000_000)
  
                  //.setVideoFrameRate(30)
  
                  //.addExtraArgs("-deinterlace")
  
                  //.addExtraArgs("-preset", "medium")
  
                  //.addExtraArgs("-g", "30")
  
                  .done();
  
          FFmpegExecutor executor = new FFmpegExecutor(ffmpeg);
  
  
  
          executor.createJob(builder).run();
  
  
  
  
  
      }
  
  
  
      public static void capture(String name) throws Exception
  
      {
  
          BufferedImage image = new Robot().createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
  
          ImageIO.write(image, "png", new File(name));
  
  
  
      }
  
  
  
      public static void main(String[]args) throws Exception {
  
  
  
          capture("start.png");
  
          //record("TC_test.mp4", "00:00:10");
  
          capture("end.png");
  
          Thread t = new Thread(new Runnable() {
  
              @Override
  
              public void run() {
  
                  // Insert some method call here.
  
                  try {
  
                      record("TC_test.mp4", "00:00:10");
  
                  }
  
                  catch(Exception e)
  
                  {
  
                      System.out.println("hello");
  
                  }
  
              }
  
          });
  
          Thread.sleep(5000);
  
  
  
          t.interrupt();
  
  
  
      }
  
  }

  I am trying to stop the recording by killing the subprocess or if there is any other method its fine too. But I am unable to do that. I know its supported according to the github link. How do I kill a subprocess please ?

  PS : THis is the first time i post a question on stackoverflow so If I made any mistakes please excuse me and provide details on how i can improve