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• C++ : FFMPEG and SDL resources

  22 janvier 2013, par advs89

  I'm looking for resources (preferably books, but websites are fine too) for using FFmpeg and/or SDL with C++.

  Stuff I'd like to be able to do (eventually) :

  • Decode and play videos in realtime to a QT widget (the QT part isn't a problem)
  • Overlay text and images on the video (in realtime)
  • Loop video
  • Cross-fade from one video to another (in realtime)
  • Some kind of DVD functionality
  • LIVE sources ? (i.e. webcam, stream, etc.)

  So far I've looked at (and consider helpful) the following resources :

  • FFmpeg and SDL Tutorial by Dranger (extremely helpful)
  • Stack Overflow : ffmpeg C API documentation/tutorial (not a duplicate, btw)

  • Sample code bundled with FFMPEG libraries

    (I'll try and update this list with anything helpful below)

  Thanks for any help...

  Also : Operating System is Windows (but maybe one day cross-platform)
  Also 2 : Resources using alternatives are welcome too... i.e. DirectShow, VFW, etc.

• avcodec/smacker : Replace implicit checks for overread by explicit ones

  25 juillet 2020, par Andreas Rheinhardt

  avcodec/smacker : Replace implicit checks for overread by explicit ones
  Using explicit checks has the advantage that one can combine several
  
  checks into one and does not have to check every time. E.g. reading a
  
  16bit PCM sample involves two calls to get_vlc2(), each of which may
  
  read up to three times up to SMKTREE_BITS (= 9) bits. But given that the
  
  padding that the input packet is supposed to have is large enough, it is
  
  no problem to only check once for each sample.
  This turned out to be beneficial for performance : For GCC 9, the time for
  
  one call of smka_decode_frame() for the sample from ticket #2425 went down
  
  from 2055905 to 1804751 decicycles ; for Clang 9 it went down from 1510538
  
  to 1479680 decicycles.
  Reviewed-by : Paul B Mahol <onemda@gmail.com>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavcodec/smacker.c

• New proposed ePrivacy Regulation and why Piwik might not need tracking consent compared to Google Analytics & co

  11 janvier 2017, par InnoCraft — Community

  The EU is proposing new ePrivacy Regulations. The proposed Regulation on Privacy and Electronic Communications will increase the protection of people’s private life and open up new opportunities for business.

  

  The new ePrivacy Regulation proposal

  The proposal mentions several changes for example to the “Cookie Law” where no longer a cookie consent will be needed when the cookies improve the user’s internet experience, for example to remember the shopping cart history or when completing a form over several pages.

  However, consent to track a user’s behaviour may be needed in the future, unless the analytics data collection is hosted on the first-party website.

  From TheRegister : O’Neil noted a minor change in which visitors to a website for analytics purposes do not require consent, as long as any personal data collected is only processed by the first party.

  

  First party Analytics respecting privacy

  Piwik is an open-source analytics platform that is used on more than 1 million websites and apps in over 150 countries, and available in more than 50 languages. The difference with other analytics solutions is that you can download and install Piwik on your own infrastructure. Websites and mobile apps tracking users with their own Piwik very likely won’t require a consent from their users if these regulations become reality.

  We have regularly written about why privacy matters, or more recently 11 ways Piwik Analytics helps you to protect your visitors privacy.

  Besides the standard Piwik features, there are Premium Features that let businesses and organizations further maximize their success based on the tracked data. Need help in hosting Piwik on premise ? InnoCraft are THE Piwik experts and know it best as it is the company of the makers of Piwik. InnoCraft provides support subscriptions and enterprise packages to help you setting up, configuring and maintaining Piwik on your infrastructure as well as offer training and custom development.

  

  We’re excited to be building the best digital analytics platform which respects our privacy on the Internet.

  Thank you for being a valued member of the Piwik community !