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• Join us for the Piwik Community Meetup 2015 !

  25 juin 2015, par Piwik Core Team — Community, Meta

  

  We’re excited to announce that our third Piwik Community Meetup will be held in Berlin on Tuesday, the 4th of August, 2015. Don’t miss this great opportunity to connect with other users and meet the core team behind Piwik. It’s free, so REGISTER TODAY ! And maybe you would like to share your Piwik use case ? We’re also waiting for your presentation ideas.

  We will cover some of the upcoming features, discuss the future of Piwik, share tricks and hacks to help you get the most out of your Piwik platform, and socialise. If you use Piwik to improve your websites and apps, or are just generally curious about digital analytics and marketing – this event is not to be missed. As our core team is scattered all over the world, this will be a rare opportunity for you to meet and talk to us all at once – especially for those of you interested in the platform, integrating your app with Piwik, and building plugins.

  After the official part, we would like to enjoy drinks with all the participants in the nearby bars. We hope you will be able to join us !

  All Piwik community members are warmly invited to take part in the meetup !

  Piwik Community Meetup 2015

  When ?

  Tuesday, the 4th of August, from 5-9pm

  Where ?

  Kulturbrauerei
  Schönhauser Allee
  Prenzlauer Berg area
  Berlin, Germany
  exact directions tbc.

  Languages :

  English and German

  Book tickets :

  BOOK YOUR FREE INVITATION HERE

  Open call for YOUR presentation ideas

  We would also like to hear how you use Piwik – we’ll be delighted if you’d share your interesting use case during the Meetup. Please send your presentation ideas (speaking time : 5 to 7 minutes) to : meetup@piwik.pro ! Deadline : 20th of July 2015.

  Contact the organisers :

  meetup@piwik.pro

• ffmpeg keeps converting second ac3 audio stream to mp2

  19 juin 2015, par JMor

  I’m new to this forum, and hope someone can help.
  I am trying to add a second audio track (chinese.ac3) to an XVID video (vts_01.avi) that already has an ac3 track.

  These audio tracks are encoded to ac3, 48000 Hz, stereo, 128 kb/s, and I would like to keep them that way — just multiplex the streams without transcoding.

  This is the command I am using :

  ffmpeg -i vts_01.avi -vcodec copy -i Chinese.ac3 -acodec copy -map 0:0 -map 0:1 -map 1:0 muxed2.avi -newaudio

  ffmpeg does its work, except for the fact that it converts the second track to mp2, 64 kb/s.

  Here is a relevant excerpt from the output, where the key part is ’Stream #0.2 : Audio : mp2, 48000 Hz, stereo, s16, 64 kb/s’ where I would like ’Stream #0.2 : Audio : ac3, 48000 Hz, stereo, 128 kb/s’ :

  Input #0, avi, from 'vts_01.avi':
  
    Metadata:
  
      encoder         : Lavf53.5.0
  
    Duration: 02:03:26.40, start: 0.000000, bitrate: 1954 kb/s
  
      Stream #0.0: Video: mpeg4, yuv420p, 720x352 [PAR 1:1 DAR 45:22], 23.98 tbr,
  
  23.98 tbn, 23.98 tbc
  
      Stream #0.1: Audio: ac3, 48000 Hz, stereo, s16, 128 kb/s
  
  [ac3 @ 018A7440] max_analyze_duration 5000000 reached at 5024000
  
  [ac3 @ 018A7440] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, ac3, from 'Chinese.ac3':
  
    Duration: 02:03:26.36, start: 0.000000, bitrate: 128 kb/s
  
      Stream #1.0: Audio: ac3, 48000 Hz, stereo, s16, 128 kb/s
  
  File 'muxed2.avi' already exists. Overwrite ? [y/N] y
  
  Output #0, avi, to 'muxed2.avi':
  
    Metadata:
  
      ISFT            : Lavf53.5.0
  
      Stream #0.0: Video: mpeg4, yuv420p, 720x352 [PAR 1:1 DAR 45:22], q=2-31, 23.
  
  98 tbn, 23.98 tbc
  
      Stream #0.1: Audio: ac3, 48000 Hz, stereo, 128 kb/s
  
      Stream #0.2: Audio: mp2, 48000 Hz, stereo, s16, 64 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
    Stream #1.0 -> #0.2

  I have tried a number of different combinations, including explicitly forcing the stream to ac3 with :

  ffmpeg -i vts_01.avi -vcodec copy -i chinese.ac3 -acodec ac3 -ac 2 -ar 48000 -ab 128k -map 0:0 -map 0:1 -map 1:0 muxed2.avi -newaudio

  Same result.

  I have also tried to assign a codec to the stream with stream specifier(based on http://ffmpeg.org/ffmpeg.html#toc-Stream-specifiers-1, but these options are not recognized by my ffmpeg.

  I am running out of things to try.

• How to transmit videos directly from the website to RTMP server instead of using OBS ? [closed]

  28 décembre 2024, par Cường Lê Sỹ

  I had a server to receive a specific RTMP video like RTMP : //domain.com/show and use OBS to record videos, what I have to do to be able to record videos on my own website and transmit it. . Access RTMP server instead of using OBS or any code can do that, thank you

  


  I hope to be able to record videos directly on my website and play it back at the viewer page, like a livestream.