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Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Création définitive du canal
12 mars 2010, parLorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
A la validation, vous recevez un email vous invitant donc à créer votre canal.
Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...)
Sur d’autres sites (6233)
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lavu/tx : implement 32 bit fixed point FFT and MDCT
9 février 2020, par Lynnelavu/tx : implement 32 bit fixed point FFT and MDCT
Required minimal changes to the code so made sense to implement.
FFT and MDCT tested, the output of both was properly rounded.
Fun fact : the non-power-of-two fixed-point FFT and MDCT are the fastest ever
non-power-of-two fixed-point FFT and MDCT written.
This can replace the power of two integer MDCTs in aac and ac3 if the
MIPS optimizations are ported across.
Unfortunately the ac3 encoder uses a 16-bit fixed point forward transform,
unlike the encoder which uses a 32bit inverse transform, so some modifications
might be required there.The 3-point FFT is somewhat less accurate than it otherwise could be,
having minor rounding errors with bigger transforms. However, this
could be improved later, and the way its currently written is the way one
would write assembly for it.
Similar rounding errors can also be found throughout the power of two FFTs
as well, though those are more difficult to correct.
Despite this, the integer transforms are more than accurate enough. -
avfilter/scale* : add option reset_sar
31 janvier, par Gyan Doshiavfilter/scale* : add option reset_sar
For anamorphic videos, enabling this option leads to adjustment of
output dimensions to obtain square pixels when the user requests
proportional scaling through either of the w/h expressions or
force_original_aspect_ratio.Output SAR is always reset to 1.
Option added to scale, scale_cuda, scale_npp & scale_vaapi.
libplacebo already has a similar option with different semantics,
scale_vt and scale_vulkan don't implement force_oar, so for these
three filters, I've made minimal changes needed to not break building
or change output.- [DH] doc/filters.texi
- [DH] libavfilter/scale_eval.c
- [DH] libavfilter/scale_eval.h
- [DH] libavfilter/vf_libplacebo.c
- [DH] libavfilter/vf_scale.c
- [DH] libavfilter/vf_scale_cuda.c
- [DH] libavfilter/vf_scale_npp.c
- [DH] libavfilter/vf_scale_vaapi.c
- [DH] libavfilter/vf_scale_vt.c
- [DH] libavfilter/vf_scale_vulkan.c
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qsv : add requirement for the mininal version of libmfx
22 mai 2022, par Haihao Xiangqsv : add requirement for the mininal version of libmfx
libmfx 1.28 was released 3 years ago, it is easy to get a greater
version than 1.28. We may remove lots of compile-time checks if adding
the requirement for the minimal version in the configure script.Reviewed-by : softworkz <softworkz@hotmail.com>
Signed-off-by : Jean-Baptiste Kempf <jb@videolan.org>
Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>