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• Revision 8c8381d543 : Enable all-zero coeff block index for sub8x8 blk This commit makes zcoeff_blk c

  30 octobre 2013, par Jingning Han

  Changed Paths :
   Modify /vp9/encoder/vp9_encodemb.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Enable all-zero coeff block index for sub8x8 blk

  This commit makes zcoeff_blk cache the case where the entire block
  is quantized to be zero (without applying zero-forcing) in the rate-
  distortion optimization loop, and skip the forward DCT, quantization,
  inverse DCT, and reconstruction process in the encode_block stage.

  It now works for all the block sizes, including sub8x8 blocks.

  Change-Id : I5ae60a9c436ba3637d11666733554bec4580ef98

• how to allow a worker to run a ffmpeg command on heroku for my python/django app ?

  10 mars 2013, par GetItDone

  I've been stuck trying to figure this out for weeks. I previously asked a similar question found here but I never got any replies. I really cannot find any good documentation anywhere. All I need to do is use a worker (don't care what worker have django-celery and rq installed) to convert a file to flv when it is uploaded from a form. I was able to get this done easily locally, but after over a week I haven't been able to get it to work no matter what I have tried. I tried adding a tasks.py file for celery, or a worker.py file for rq, and I have no idea what else (if anything) needs to be done, such as in my settings.py or Procfile. My procfile looks like :

  web: gunicorn lftv.wsgi -b 0.0.0.0:$PORT
  
  celeryd: celery -A tasks worker --loglevel=info
  
  worker: python worker.py

  My requirements.txt showing what I have installed looks like this :

  Django==1.4.3
  
  Logbook==0.4.1
  
  amqp==1.0.6
  
  anyjson==0.3.3
  
  billiard==2.7.3.19
  
  boto==2.6.0
  
  celery==3.0.13
  
  celery-with-redis==3.0
  
  distribute==0.6.31
  
  dj-database-url==0.2.1
  
  django-celery==3.0.11
  
  django-s3-folder-storage==0.1
  
  django-storages==1.1.6
  
  gunicorn==0.16.1
  
  kombu==2.5.4
  
  pil==1.1.7
  
  psycopg2==2.4.5
  
  python-dateutil==1.5
  
  pytz==2012j
  
  redis==2.7.2
  
  requests==1.1.0
  
  rq==0.3.2
  
  six==1.2.0
  
  times==0.6

  The only thing relevant in my settings.py are as follows :

  BROKER_BACKEND = 'django'
  
  BROKER_URL = #For this I copy/pasted the code from my redistogo add-on from heroku. Not sure if correct
  
  BROKER_TRANSPORT_OPTIONS = {'visibility_timeout': 1800}

  Without trying to take up too much more space, my tasks.py looks like this :

  import subprocess
  
  
  
  @task
  
  def ffmpeg_conversion(input_file):
  
      converted_file = subprocess.call(input_file)
  
      return converted_file

  I use S3 to store my static and media files, and the upload works (adding uploads to my bucket), however no matter what I try the conversion never will. Is there a good tutorial for absolute beginners ? I followed the heroku redis tutorial, celery docs, rq docs, and whatever else I can find, and got the examples to work, but the worker will not execute the command from my view. For example one of the many things I tried :

  ...
  
  ffmpeg = "ffmpeg -i %s -acodec mp3 -ar 22050 -f flv -s 320x240 %s" % (sourcefile, targetfile)
  
  ffmpegresult = ffmpeg_conversion.delay(ffmpeg)
  
  ...

  or using rq

  ...
  
  q = Queue(connection=conn)
  
  result = q.enqueue(ffmpeg_conversion, ffmpeg)
  
  ...

  I seems like it should be simple, however I am completely self-taught and have never deployed a project whatsoever, and there just doesn't seem to be any good documentation or tutorial available for what I am trying to do. I can't judge whether I am completely off and completely missing something significant or relatively close to getting this to work. I really do appreciate any input whatsoever, this is driving me nuts. Thanks in advance.

• Red5 live stream - huge delay on localhost

  23 janvier 2013, par user1958067

  I m running Red5 1.0.0 RC1, with JW Player and ffmpeg on Linux Mint14

  There is a huge delay while streaming, even when everythings happening on my machine/localhost.

  I do following steps :

  1. FFmpeg : ffmpeg -i 'http://localhost:port' rtmp://localhost/oflaDemo/live.flv

  2. Red5 : TCPnoDelay ist set to true.

  3. JW Player : Bufferlength is set to 0. Also tried 2 and 3.

   :

      <code class="echappe-js">&lt;script type=&amp;#39;text/javascript&amp;#39;&gt;<br />
  
       jwplayer(&amp;#39;mediaspace&amp;#39;).setup({<br />
  
      &amp;#39;flashplayer&amp;#39;: &amp;#39;player.swf&amp;#39;,<br />
  
      &amp;#39;file&amp;#39;: &amp;#39;live&amp;#39;,<br />
  
      &amp;#39;type&amp;#39;: &amp;#39;rtmp&amp;#39;,<br />
  
      &amp;#39;streamer&amp;#39;: &amp;#39;rtmp://localhost/oflaDemo&amp;#39;,<br />
  
      &amp;#39;controlbar&amp;#39;: &amp;#39;none&amp;#39;,<br />
  
      &amp;#39;autostart&amp;#39;: &amp;#39;true&amp;#39;,<br />
  
      &amp;#39;bufferlength&amp;#39;: &amp;#39;3&amp;#39;,<br />
  
      &amp;#39;width&amp;#39;: &amp;#39;640&amp;#39;,<br />
  
      &amp;#39;height&amp;#39;: &amp;#39;380&amp;#39;<br />
  
    });<br />
  
  &lt;/script&gt;
  
  

  The delay is something between 7-10 seconds !
  This all is happening on and from localhost, so bandwith shouldnt be the issue.