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• Corrupted h264 mp4 using libav [on hold]

  16 juin 2014, par ArK22

  I´m compressing and muxing a video using libav, compiled with libx264 support. For this i´ve written a c++ .dll, to which i feed frames regularly :).

  Codec : h264
  Container : mp4

  Everything goes smooth, and the video gets played by VLC with no problem. But that’s it, no other video player can play it. Quicktime shows a black screen, MediaPlayer crashes, and the video itself has no thumbnail in finder (Mac) or explorer (PC). Reencoding the video using ffmpeg, works nicely and fixes this. However, i would like to know what’s wrong.

  My problem is exactly the same as the one described here.

  Comparing the two videos (before and after fixing with ffmpeg) using MediaInfo yields identical results, apart from compression settings, which vary a little bit. Both are baseline 3.1 profile, ftyp is isom, same bitrate, same duration, same fps, same everything.

  Has anyone stumbled upon similar problems using libav ? Tomorrow i´ll post my code to make things clearer, but in the meanwhile any suggestions are welcome.

  thanks !

• ffmpeg -bsf:v h264_mp4 toannexb not working in debien

  5 avril 2017, par Ruydo

  i have to append video with a audio and merge the output with anther video mp4
  i use this code to append video with audio

  ffmpeg -i "out1.mp4" -i "desc1.mp3" -c:v copy -c:a aac -strict experimental "output2.mp4"

  its work in windows but in my server lunix i have this error

  root@ns:~# ffmpeg -i /var/www/hespress/17/out1.mp4 -i /var/www/hespress/17/desc1.mp3 -c:v copy -c:a aac -strict experimental /var/www/hespress/17/output2.mp4
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/17/out1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:20.03, start: 0.000000, bitrate: 1374 kb/s
  
      Stream #0.0(und): Video: h264 (Main), yuvj420p, 1280x720 [PAR 1:1 DAR 16:9], 1371 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
  
  [mp3 @ 0xa06c40] max_analyze_duration reached
  
  Input #1, mp3, from '/var/www/hespress/17/desc1.mp3':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:19.53, start: 0.000000, bitrate: 192 kb/s
  
      Stream #1.0: Audio: mp3, 44100 Hz, mono, s16, 192 kb/s
  
  Unrecognized option 'c:v'
  
  Failed to set value 'copy' for option 'c:v'

  when i went to merge two file i use this code

  ffmpeg -i intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts '.$dossier.'/intermediate1.ts

  in windows its work but in server debian i have this error

  root@ns205125:~# ffmpeg -i /var/www/hespress/intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts /var/www/hespress/17/intermediate1.ts
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  [aac @ 0x3938ba0] Input buffer exhausted before END element found
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 30.00 (30/1)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/intro.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2017-03-27 23:03:04
  
    Duration: 00:00:12.92, start: 0.000000, bitrate: 2598 kb/s
  
      Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 1280x720, 2479 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, mono, s16, 127 kb/s
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
  Unrecognized option 'c'
  
  Failed to set value 'copy' for option 'c'
  
  root@ns205125:~# 

• 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 !