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• options_table : Remove a now unnecessary include of config.h

  3 novembre 2016, par Martin Storsjö

  options_table : Remove a now unnecessary include of config.h
  The include of config.h was added in 2012 in 1d9c2dc8, due to
  
  the use of CONFIG_SNOW_ENCODER ifdefs within options_table.h.
  
  When the snow codec was dropped later (in a0c5917f8 in 2013),
  
  this include no longer served any purpose.
  options_table.h is included in builds for the host as well, when
  
  building documentation. config.h should not be included in code
  
  that is built for the host, since it can contain workarounds
  
  for the target compiler/environment, like adding a missing define
  
  of restrict, defining getenv(x) to NULL for environments that lack
  
  getenv.
  The seemingly innocent include reordering in 2025d37871 broke
  
  builds that have getenv(x) defined to NULL in config.h (Windows CE
  
  and Windows Phone/RT), since libavcodec/options_table.h include
  
  config.h, while libavformat/options_table.h end up bringing in
  
  more system headers, and those system headers can contain a proper
  
  definition of getenv, which clash with the getenv define in config.h.
  
  This was avoided earlier as long as libavformat/options_table.h (or
  
  avformat.h) was included before libavcodec/options_table.h.
  This fixes builds for Windows Phone/RT and CE.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavcodec/options_table.h

• Evolution #3980 (Nouveau) : Esparce privé > page auteurs : modification affichage "tout afficher" ...

  8 août 2017, par Alexis Z

  Bonjour,

  Ma suggestion est plutôt un amélioration d’ergonomie qu’une fonctionalité.
  Cette modification consisterait à ajouter un onglet compte "actifs" (définition d’actif :qui n’ont pas le status "a la poubelle") ou modifier l’onglet "tout afficher" pour le basé sur ce critère de compte "à la poubelle" ou non.

  Dans l’espace privé > page auteurs, on a 4 onglets :
  - "Tout afficher" : affiche tous les comptes, affiche tous, donc basé sur aucun critère
  - "administrateur" : affiche les admins, basé sur le type de compte
  - "rédacteur" : affiche les rédacteurs, basé sur le type de compte
  - "à la poubelle", affiche les utilisateurs avec l’etat "a la poubelle" ou "désactivé" donc basé sur un état et non un type de compte.

  On notera deux critères de tris, un sur le type et l’autre sur "l’état".

  Dans mon cas et je pense le cas d’autres webmestres, on aimerais voir les comptes que j’appelerais "actifs" donc pas à la poubelle.
  Ce qui revient à l’inverse de l’onglet "à la poubelle" et actuellement n’est pas disponible car l’onglet "Tout afficher", affiche tout les comptes sans se basé sur aucuns critères.
  De mon point de vu il manque soit un onglet "comptes actifs" qui affiche tout les comptes qui ne sont pas a la poubelle, soit modifier l’onglet "Tout afficher" pour qu’il soit basé sur le critère inverse de "à la poubelle".

  Merci

• FFmpeg recording audio from several sources

  4 avril 2017, par Valery Shevchuk

  everyone.
  I’m trying to use FFmpeg to record video and 3 audio sources and use it to generate 3 different video files - each file should contain the same video stream but the different audio stream. The problem is that I got audio sync issues. The first audio stream is synced perfectly, but the second one has 1 sec lag, and the third one has like 2 sec lag.

  I’ve made a few tests so far and it seems that root cause of the issue is initialization time of video/audio devices. So, one device is already recording something but the second is still being opened and so on. I’ve tried to change input devices order and after that audio streams still have the same issue BUT if before 2nd and 3rd audio streams were some time ahead of video, after reordering they became to lag after the audio (audio for the same event appears with some delay). So this test confirms my version about device initialization times.

  But the question still, why the first audio stream is synchronized properly, while other 2 are not. and also, how could I overcome this issues ? Any workarounds and ideas are highly appreciated.

  Here is FFmpeg command I’m using and it’s output.

  ffmpeg.exe -f dshow -video_size 1920x1080 -i video="Logitech HD Webcam
  C615" -f dshow -i audio="Microphone (HD Webcam C615)" -f dshow -i
  audio="Microphone Array (Realtek High Definition Audio)"
  -filter_complex "[1:a]volume=1[a1] ;[2:a]volume=1[a2]" -vf scale=h=1080:force_original_aspect_ratio=decrease -vcodec libx264
  -pix_fmt yuv420p -crf 23 -preset ultrafast -acodec aac -vbr 5 -threads 0 -map v:0 -map [a1] -map [a2] -f tee
  "[select=\’v,a:0\’]C :/Users/vshevchu/Desktop/123/111/111_jjj1.avi|
  [select=\’v,a:1\’]C :/Users/vshevchu/Desktop/123/111/111_jjj2.avi"

  OUTPUT

  PS. Actually, the issue is exactly the same when I’m not using "tee" muxer but writing all the audio streams to one container. So, "tee" isn’t a suspect.