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• Revision c4d1ab573a : Removing memset calls inside idct/iht functions. Making appropriate memset insi

  2 octobre 2013, par Dmitry Kovalev

  Changed Paths :
   Modify /vp9/decoder/vp9_decodframe.c

  
   Modify /vp9/decoder/vp9_idct_blk.c

  
  
  Removing memset calls inside idct/iht functions.

  Making appropriate memset inside decode_block now.

  Change-Id : I8e944194668c830de08271c8fb6e413251c201d8

• Making use of -w option in pyinstaller does not start/create the subprocess in python

  15 novembre 2018, par User

  I am making use of python to invoke ffmpeg to start and stop video capturing. I do not want to the console window appear when my python exe starts. The code I have currently to start and stop video recording is below,

  cmd = '\\ffmpeg\\bin\\ffmpeg.exe -loglevel quiet -f gdigrab -framerate 30 -i desktop -vcodec libx264 -pix_fmt yuv420p -preset slow -crf 0 -threads 0 ' + '"' + final_file_for_video_processing + '"'
  
  
  
  def stop_screen_recording():
  
      sub_process.stdin.write("q".encode())
  
      stdOutput, stdError = sub_process.communicate()
  
  
  
  
  
  def stop_screen_recording(cmd):
  
      startupinfo = subprocess.STARTUPINFO()
  
      startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
  
      global sub_process
  
      sub_process = subprocess.Popen(cmd, startupinfo=startupinfo, 
  
      stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=None)
  
      sub_process.wait()

  The challenge faced is, when I build the exe using
  pyinstaller -w —onefile python_file_name.py the recording does not begin. Note : The -w is to not show the console window.

  If I were to make use of pyinstaller and build the exe in the following way,
  pyinstaller —onefile python_file_name.py then recording of the video begins.
  Note : Without the -w command it works perfectly fine.

  I want to make use of the -w command since I do not want to show the console window of my python exe. Any insights will help.

• Android : What should I use when making a native video player ?

  16 juillet 2012, par jtam

  Currently I am doing research for a native video player project, initialy I tried to use ffmpeg as the decoder and return the Byte to java, then I use View::onDraw with Canvas to display frames. Unfortunately, the performance of this method is not good, so I am wondering whether there is anything else that I could use to display frames other then passing to java ?

  Also, other than display the frames, how can I play sound using C/C++ with NDK ?

  Thanks.