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Autres articles (71)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (15332)
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lavc/dxva2_internal : Cast the dxva2 and d3d11 decoders and cfgs to (void *).
15 avril 2018, par Carl Eugen Hoyoslavc/dxva2_internal : Cast the dxva2 and d3d11 decoders and cfgs to (void *).
Silences several warnings :
libavcodec/dxva2_internal.h:107:98 : warning : pointer type mismatch in conditional expression
libavcodec/dxva2_internal.h:109:94 : warning : pointer type mismatch in conditional expressionReported-by : Reino Wijnsma
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avfilter/vf_corr : for all zero returns zero score instead of 1
3 décembre 2023, par Paul B Mahol -
libavcodec avcodec_open2 returns -22
28 juillet 2012, par buchtakI am trying to learn how to encode video using libavcodec library. I use the following initialization :
avcodec_register_all();
// This works fine.
AVCodec *avcodec = avcodec_find_encoder( CODEC_ID_H264 );
AVCodecContext *avctx = avcodec_alloc_context3( avcodec );
avctx->bit_rate = 400000;
avctx->width = 640;
avctx->height = 480;
avctx->time_base.den = 15;
avctx->time_base.num = 1;
avctx->gop_size = 10;
avctx->max_b_frames = 1;
avctx->pix_fmt = PIX_FMT_YUV420P;
av_opt_set( avctx->priv_data, "preset", "slow", 0 );
// ret should be zero, but it's negative
int ret = avcodec_open2( avctx, avcodec, NULL );However,
avcodec_open2(...)
always returns a negative value. Theavcodec_find_encoder(...)
works fine and the returned pointer is notNULL
. I use Win7 x64, 64-bit Zeranoe FFmpeg build fromhttp://ffmpeg.zeranoe.com/builds/
According to the readme the FFmpeg version is 2012-06-22 git-c17808c built with
--enable-libx264
. I also triedCODEC_ID_MPEG1VIDEO
and changing some of the initialization parameters, but no matter what I do, theavcodec_open2(...)
always returns value-22
. The decoding/encoding example provided with the Zeranoe build (it's the same one as http://ffmpeg.org/doxygen/trunk/api-example_8c-source.html) does not work either...