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Autres articles (86)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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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" (...) -
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 (...)
Sur d’autres sites (11017)
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aviflter/vf_waveform : speed up non-color filters
10 novembre 2015, par Paul B Mahol -
FFMPEG improve MP4 encoding speed [on hold]
17 septembre 2015, par Kim TMy input files are MP4, which are combined with an overlay to one MP4 video file. How can I improve the speed of these FFMPEG commands ?
./ffmpeg -y -i intro.mp4 -f mpegts 0.ts
./ffmpeg -y -i record.mp4 -i overlay.png -filter_complex "[0:v][1:v] overlay=0:0" -ac 2 -f mpegts 1.ts
./ffmpeg -y -i outro.mp4 -f mpegts 2.ts
./ffmpeg -y -i "concat:0.ts|1.ts|2.ts" -vcodec libx264 -preset ultrafast -strict -2 output.mp4Commands that improved speed :
- upgrading ffmpeg to version 2.42 with neon support for my device
- -f mpegts = converts videos to transport streams which process faster
- -preset ultrafast = tells encoder to use fastest encoding preset
- -ss before -i = seeks straight to start point without processing frames
Commands where I saw no speed improvement :
- -c copy = copies the stream, but this doesn’t seem to work on overlay filters and concats :(
- -threads 2 = tells FFMPEG to use more threads, but don’t noticed an improvement over the default
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C# FFmpeg / NReco.VideoConverter : Increase Conversion Speed
16 septembre 2015, par Chaki_BlackI use NReco.VideoConverter for video conversion.
How can I increase video conversion speed and get a maximum performance ?
Theory says, that it is possible to increase video conversion :- rise processor cores quantity ;
- rise CPU frequency (set more powerful processor(s)) ;
- set outer video adapter to use GPU.
There several questions :
- can FFmpeg / NReco.VideoConverter use several cores/processor(s) at
once and how ? - can FFmpeg / NReco.VideoConverter use GPU or it depends from video
codec installed in OS ?
What factors can influence on conversion process ?