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• [FFmpeg on Windows] : help me converting a set of .png files to a video file

  31 octobre 2016, par Stefano Fedele

  Hi everybody I am on windows 10, I installed FFMpeg and I would like to use it to convert 100 .png image files into a video file.

  I am using it via the prompt, which is the Windows console, and I am struggling with the syntax (which probability comes from Linux). I set the folder in which ffmpeg.exe is contained as a windows system path as suggested on many websites and I moved the prompt to the folders in which the image files are contained which is reported here :

  cd C:\video\pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain

  I would like to convert the image files contained in this folder into a video file, the names of those image files are reported here :

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 001.png

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 002.png

  ...

  ...

  pnts + ag 40 nm- during-tmpyp 10-12- laser power 7mw- kinetic100- exposure time 1s- gain 20 100.png

  The number of frames per second whould be 2.

  I read on internet that I should have to type something like this

  ffmpeg -i image-%03d.png video.webm

  But it looks like there are a lot of variables to consider and all the times I try to set them and run FFmpeg I get an error from the prompt.
  Is there anyone who could suggest me the proper syntax, please ?

• running ECSTask in IOS

  26 janvier 2017, par DecKno

  I am new to IOS platform. I have a code snippet written using JAVA API.

       AmazonECS amazonECS = new AmazonECSClient(credentials).withRegion(usWest1);           
  
       String command="bash /opt/run-task.sh "+"/mnt/s3/inputFile1::/mnt/s3/inputFile2"+" "+ "outputFile";
  
  
  
         ContainerOverride containerOverrides = new ContainerOverride().withCommand(command).withName("&lt;<container>>");
  
         TaskOverride overrides = new TaskOverride().withContainerOverrides(containerOverrides);
  
         RunTaskRequest runTaskRequest = new RunTaskRequest().withCluster("&lt;<cluster>>").withTaskDefinition("&lt;<task definition="definition" arn="arn">>")
  
                 .withOverrides(overrides).withGeneralProgressListener(new ProgressListener() {
  
  
  
                  @Override
  
                  public void progressChanged(ProgressEvent progressEvent) {
  
                      System.out.println(progressEvent.getBytesTransferred());
  
                      System.out.println(progressEvent.getEventType());
  
                  }
  
              });
  
  
  
  
  
         Task task = new Task().withTaskDefinitionArn("&lt;<task definition="definition" arn="arn">>")
  
                          .withOverrides(overrides);
  
  
  
          RunTaskResult runTaskResult = amazonECS.runTask(runTaskRequest).withTasks(task);
  
          List<failure> failures = runTaskResult.withTasks(task).getFailures();
  
  </failure></task></task></cluster></container>

  I am using ffmpeg to merge few video files as single file. I need to know if there is equivalent functionality available in IOS.

• Live streaming of processed frames to AWS

  22 avril 2021, par MinasCham

  I'm working on a project where i need to capture live video feed from an RTSP camera source, process the video frame-by-frame and stream the result to an AWS Service.

  


  So far, my solution :

  


  

  • Captures frames from the RTSP camera source using OpenCV and performs some processing.

  


  • Feeds the processed frames to an ffmpeg pipe that packages the content for online streaming (HTTP Live Streaming - hls) and saves it locally.

  


  • Transfers the media content to an Amazon Kinesis Video Stream using a Gstreamer pipeline element with kvssink as a sink element.

  


  


  My questions are :

  


  

  • Currently I'm saving the content both locally and on an Amazon Kinesis Video Stream. Is this efficient ?

  


  • Is it possible to directly stream the frames to the Amazon kinesis Video Stream (perhaps by connecting the ffmpeg output with the gstreamer pipeline element) ?

  


  • Is the file format suitable for this implementation or would it better to encode the media differently ?