On other websites (1742)

• FFMPEG Video Encode Single Input Multi Output

  1 August 2014, by ShyamKG

  I have a custom video encoder filter which can produce upto 5 different bitrates for the same resolution.

  Note that single instance of the encoder is optimized for producing these multiple outputs. Every encode call returns 5 output buffers.
  This means that I would not want to run more than one encoder instance.

  I need to integrate this encoder to FFMPEG which should give multiple outputs for a single input. I have referred the following link regarding creating multiple outputs.
  https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs

  In this link multiple outputs are created by running multiple encoder instances which is not my requirement.

  Is there any way by which we can configure ffmpeg to give multiple output for one encoder instance?

• Evolution #4496 (En cours): [Cohérence d’interface] Harmonisation de la gestion des doc/logos en 3.3

  25 May 2020

  Bonjour,

  Contexte¶

  Je viens de tester la migration de 2 sites en mutualisation facile de 3.2.7 SVN à 3.3 SVN.
  Nickel, ça marche.
  J’ai pu vérifier que les logos étaient bien déplacés dans sites/nomdedomaine/IMG/logo/

  Mais, j’avais cru comprendre que les logos devenaient des documents comme les autres, ce qui permettrait de les réutiliser via la bibliothèque.

  Constat¶

  Et là, c’est le drame.
  Les logos ne sont pas listés dans la bibliothèque.

  Réciproquement, l’upload des logos est identique aux versions précédentes de SPIP.
  Donc, ne permet :

  • ni d’aller chercher un logo dans la bibliothèque
  • ni de modifier un logo (il faut comme avant le supprimer, ce qui pose problème quand on veut modifier le logo normal et qu’il y a un logo de survol).

  Bref, c’est peut-être un chantier pour 3.4, mais en l’état, cette conversion des logos en documents ne me semble rien apporter pour l’utilisateur final.

  Comportements attendus¶

  • téléversement des logos utilisant les mêmes mécanismes que ceux des documents/images
  • boite d’édition d’un logo semblable à celle des documents, permettant entre autre de changer le fichiers du logo
  • logos listés dans la médiathèque
  • logos utilisable comme images dans les articles

• FFMPEG Wrapping a raw video stream with OGG (or another wrapper)

  9 July 2014, by Cykon

  I’m building an application which takes in a rawvideo stream (piped in from an ffmpeg instance), manipulates and reads the raw video data, and pipes the output to another ffmpeg instance for encoding. Everything works great, however I’ve been trying to think of a solution which would allow audio to be sent into my program as well.

  The Ogg container seems to have a great C library, and it appears as if there has been some movement to add support for raw video https://wiki.xiph.org/OggRGB

  My plan was to pipe in a stream formatted for Ogg, use libogg to demux it, after parsing through the video data and manipulating it... use libogg again to encode and pipe out.

  Unfortunately, FFMPEG throws an "Unsupported codec id in stream 0" error when asked to output OGG with rawvideo.

  My test ffmpeg command is as follows:

  ffmpeg.exe -i fs0.mp4 -f ogg -c:v rawvideo -pix_fmt rgb24 -s 192x144 -

  Any solutions, or alternative solutions are welcome. As a side note, my program has the ability to take in multiple videos at once and outputs a combination of the inputs.