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Autres articles (97)
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Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...) -
Prérequis à l’installation
31 janvier 2010, parPréambule
Cet article n’a pas pour but de détailler les installations de ces logiciels mais plutôt de donner des informations sur leur configuration spécifique.
Avant toute chose SPIPMotion tout comme MediaSPIP est fait pour tourner sur des distributions Linux de type Debian ou dérivées (Ubuntu...). Les documentations de ce site se réfèrent donc à ces distributions. Il est également possible de l’utiliser sur d’autres distributions Linux mais aucune garantie de bon fonctionnement n’est possible.
Il (...)
Sur d’autres sites (9385)
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How can I display the frame got by FFmpeg cuvid decoder without copy to host memory ?
21 septembre 2019, par heftyNowadays I am working on a video display program using FFmpeg to decode the frames. For h264 input, I chose h264_cuvid to decode and get decoded AVFrame store in Nvidia video card’s device memory.
Now I am using some inefficient way to display the frame by copying the hardware frame to host memory and then display :avcodec_receive_frame(decode_ctx, hw_frame); // Get decoded hardware frame that store in device memory.
av_hwframe_transfer_data(sw_frame, hw_frame, flag); // Copy the hardware frame to the host memory.
//...some code to scale and display the sw_frame.I want to display the hw_frame by Direct3D surface directly but I don’t know how to access the data in hw_frame and copy the pixel data to a D3D surface natively (without accessing the host memory).
What I know is that the hw_frame’s data[0] and data[1] are CUdeviceptr pointing to the NV12 data store in device memory, anyone knows how to use the CUdeviceptr to transfer the data to a D3D surface through the device memory and display ? -
Error in build while using parallel video encoding library
27 février 2015, par user3288346This might be a question very specific to the tool, however I would just like to know the general approach to solving this.
I am using this tool https://github.com/luvit/luvi to perform parallel video encoding. It uses ffmpeg under the hood to the encoding.
I have installed all the necessary libraries needed. However, i get a linker error during the build.
Following is the error :/tmp/ccZtNGZQ.o : In function
init_out':
/home/koustubh/video-transcoding/luvi/common.c:43: undefined reference toavformat_alloc_output_context2’
/home/koustubh/video-transcoding/luvi/common.c:149 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_in’ :
/home/koustubh/video-transcoding/luvi/common.c:195 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_ctx’ :
/home/koustubh/video-transcoding/luvi/common.c:248 : undefined reference toxdo_keysequence'
/tmp/ccZtNGZQ.o: In functiontranscode’ :
/home/koustubh/video-transcoding/luvi/common.c:464 : undefined reference to `xdo_keysequence’What is general approach I should follow to fix this problem.
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Linker error while using parallel video encoding library
27 février 2015, par user3288346This might be a question very specific to the tool, however I would just like to know the general approach to solving this.
I am using this tool https://github.com/luvit/luvi to perform parallel video encoding. It uses ffmpeg under the hood to the encoding.
I have installed all the necessary libraries needed. However, i get a linker error during the build.
Following is the error :/tmp/ccZtNGZQ.o : In function
init_out':
/home/koustubh/video-transcoding/luvi/common.c:43: undefined reference toavformat_alloc_output_context2’
/home/koustubh/video-transcoding/luvi/common.c:149 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_in’ :
/home/koustubh/video-transcoding/luvi/common.c:195 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_ctx’ :
/home/koustubh/video-transcoding/luvi/common.c:248 : undefined reference toxdo_keysequence'
/tmp/ccZtNGZQ.o: In functiontranscode’ :
/home/koustubh/video-transcoding/luvi/common.c:464 : undefined reference to `xdo_keysequence’What is general approach I should follow to fix this problem.