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• Handling multiple line subtitles of Right aligned languages(arabic) in Moviepy

  24 décembre 2023, par Stanger Danger

  I am trying to add Arabic subtitles on a video using Moviepy. The issue I'm facing is related to alignment of Arabic text, as it progresses from right to left, instead of left to right in English language.

  


  

  


  As text length gets more and more, Moviepy trims the words from both ends, this issue can be resolved if we break the text into multiple lines. This works well for English language but for Arabic, the first line becomes the last line because of the (Right-Left)alignment.

  


  

  


  The text on Second line should come first on the first line at the start, while end chuck of first text towards the left corner should render on the second line, but it is getting rendered as English language, Left to right alignment.

  


  Here is my code :

  


  def add_subtitles(address_subtitles, address_video):
  video = VideoFileClip(address_video)
  generator = lambda txt: TextClip(txt, font='Arial', fontsize=22, color='black', stroke_width=2, method='caption', align='south', size=video.size)
  subtitles = SubtitlesClip(address_subtitles, generator)
  #print()

  result = CompositeVideoClip([video, subtitles.set_pos(('center','bottom'))])
  result.write_videofile("arabic_with_hardcoded_subtitles_3.mp4", fps=video.fps, temp_audiofile="temp-audio.m4a", remove_temp=True, codec="libx264"
  , audio_codec="aac")


  


• New Piwik 2.0 public beta for testers

  16 octobre 2013, par matt

  Dear Piwik community,

  We are excited to announce the release of the first public beta version of Piwik 2.0.

  This is software still in development and we really don’t recommend that you run it on a production site — set up a test database just to play with the new version.

  Piwik 2.0 is a major update from Piwik 1.12 and is the result of 5 months of work on the platform !

  What’s changed ?

  We focused on upgrading Piwik source code quality and maintainability : upgraded to PHP 5.3 using namespaces, changed templating library to Twig, started using composer, using Less as well as css, improved QA tests, introduced new Screenshots tests, refactored translations to nice JSON format, refactored LOTS of code, added documentation….

  There also performance improvements, in particular the “All Websites Dashboard” is now usable with 20,000+ websites !

  Several bugs were fixed and we added some very-special-and-exciting new features.

  See the list of closed tickets in Piwik 2.0, or learn more about our recent developments in the Development update blog post.

  Piwik 2 is the open platform for your analytics data !

  How to update to Piwik 2.0 beta ?

  1. You can tell Piwik to use the latest beta from within the user interface. See this FAQ : [piwik.org]
  2. or alternatively you may download the latest beta from the build server, upload these files on top of your existing piwik files, and visit Piwik to upgrade.

  Beta cycle
  The more you test the beta, the more stable our release candidates and our final release will be. If you think you’ve found a bug, you can post it in this forum post. Or, if you’re comfortable writing a reproducible bug report, file one. The stable Piwik 2.0 release is planned for mid-November !

  Happy testing,

  PS : if you are interested in professional support for Piwik, or custom feature development, contact the Piwik experts.

• How to "filter" a file through command line before apache sends it to client ?

  1er septembre 2020, par Timothe Jahan

  I have large collection of video files which are available on our website.
For each video we have multiple quality and language, so in order to save space we store only 1 file, which contains all audio and video tracks.

  


  Our streaming server can handle these multitrack files in order to serve only the useful part to each user, but we also make them available for download through the apache web server.
Currently, when a user request a file (certain quality, certain language), we first create a temporary file with only his needs, and give him for download.
I would like to remove this intermediate step and extract on the fly.
Extraction can be done by ffmpeg, but I need to have apache "pipe" the file through ffmpeg before sending the bytes out. Do you have any way of doing this.

  


  example :

  


  


  Filename_multi.mp4 [SD,HD,fr,en,ru]
User request : Filename_HD_fr.mp4 [HD,fr]
Apache fetch the file Filename_multi.mp4 and pipe it through an ffmpeg command and send the bytes as > they are encoded, not waiting for the end.

  


  


  Note this is on linux, and the ffmpeg part is not a problem.

  


  Thx
Timothé