
Recherche avancée
Médias (1)
-
Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (75)
-
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
Sur d’autres sites (8488)
-
How to embed additional metadata to a video file in libavcodec (FFmpeg C source code fork)
7 mars 2023, par leavittxI'm extending an existing codec (Hap) inside ffmpeg library, adding some additional stuff to it (modifying FFmpeg code in my own fork of it)


One of the things I'd like to do is to store a per-file maximum encoded packet size in some global header/metadata so I can use it later while doing decoding (generally, the metadata/info to store can be arbitrary, size is just what I currently need for some specialized decoder I'm writing).


I'm modifying the ffmpeg code file
https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/hapenc.c


EDIT : What I'd like to achieve


- 

- Compute some numeric value during the encoding (namely, the maximum encoded frame size for the video - it's needed for a specialized fast decoder to not read all the frames beforehand) - that is done already
- Store that value in the video file metadata (looks like it should be done on container level)






My initial incorrect attempt :
But I don't currently see any possibility to save any info outside of a single packet being produced by
hap_encode
function and written toAVPacket *pkt
parameter.

- 

- Set dict parameter on
AVCodecContext *avctx
'spriv_data
:




av_opt_set_int(avctx->priv_data, "max_compressed_frame_size", <size>, 0);
 av_opt_set(avctx->priv_data, "max_compressed_frame_size", "", 0);
</size>


Later, while decoding
av_opt_get/av_opt_get_int
report non-existing key.

- 

- Set various
AVCodecContext *avctx
fields :




avctx->flags2 = <size>;
 avctx->extradata_size = <size>;
 avctx->ticks_per_frame = <size>;
 avctx->delay = <size>;
</size></size></size></size>


They all also seem to be not preserved when doing decoding later (I get just default values from decoder's
AVCodecContext
)

-
avcodec/mobiclip : Rewrite code to make it clearer
18 novembre 2021, par Andreas Rheinhardtavcodec/mobiclip : Rewrite code to make it clearer
In order to know that the earlier code did not use uninitialized
values one needs to know that the lowest four bits of each used
value of pframe_block4x4_coefficients_tab do not vanish identically.
E.g. Coverity did not get this and warned about it in ticket #1466632.
Fix this by slightly rewriting the code.Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
-
ftp: move common commands code to function
29 mai 2013, par Lukasz Marek