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• Getting Flask to accept chunked encoding

  22 août 2014, par Andrew

  Is it possible to have Python Flask reading chunked encoding sent to it ?

  I have a very simple routine where I want to read the output from ffmpeg -progress which sends progress updates via chunked encoding.

  What happens though is Flask closes the connection after the first POST.

  my routine is very simple

  @app.route('/status', methods=['POST','GET'])
  
  def get_status():
  
      logging.error(request.headers)
  
      logging.error(request.data)
  
      logging.error(request.args)
  
      return "OK"

  What I see in the output is as follows and ffmpeg closes when the POST does

  ERROR:root:Transfer-Encoding: chunked
  
  Content-Length:
  
  User-Agent: Lavf/55.45.100
  
  Connection: close
  
  Host: localhost:50000
  
  Accept: */*
  
  Content-Type:
  
  
  
  
  
  ERROR:root:
  
  ERROR:root:ImmutableMultiDict([])

  Excuse my lazy logging to error. Note in this case I am running Flask in debug mode but otherwise would like to run in Tornado or an equivalent simple container with permissions that make it easy to run command line programs like ffmpeg

• ffmpeg video stream to app c# [on hold]

  3 septembre 2014, par Alexey Medvedev

  I am trying to make a video mixer for online broadcasts. To do this, I use ffmpeg and C #. I had a problem with the transfer of the video stream from ffmpeg to my program. I would like to receive a stream of ffmpeg using network protocols (e.g. TCP, UDP or others) or capturing if from ffplay window, but I don`t how I can do it. Can you give me some ideas ?

  For example, I have command for ffmpeg : "ffmpeg -i video1.mp4 -f mpegts udp:127.0.0.1:5000" or same command with other output formats or network protocols. How i can read video stream from the port and convert it to Bitmap ?
  I need to send video stream from my program from computer A to my program to computer B. I write program on C#. I dont know how I can compress video which I must send between my computers and I decided to use Ffmpeg. Now, I can streaming video from my program in computer A to ffmpeg and compress it with parameters which I need.
  On second computer I can read this steam using ffmpeg or ffplay, but I don`t know how I can get this stream into my program.
  1) How can I get this stream in my program ? Which libraries can you recommend me ?
  2) Do you know any libraries which can compress video, instead of using ffmpeg ?

• Merge commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’

  9 octobre 2014, par Michael Niedermayer

  Merge commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’
  * commit ’9d5fed6dc4cccb0689f694112f5026988bebc472’ :
  
    avcodec : fix descriptions on color transfer options
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/options_table.h