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Autres articles (79)
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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 ;
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HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (8709)
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How can I cut a video to a certain length and add an intro video to it using ffmpeg-python ?
3 septembre 2021, par kupHow can I cut a video to a certain length and add an intro video to it using ffmpeg-python ?


I am doing this :


intro = ffmpeg.input(intro)
mainvid = ffmpeg.input(mainvid)

v1 = intro.video
a1 = intro.audio
v2 = mainvid.video
a2 = mainvid.audio

joined = ffmpeg.concat(v1, a1, v2, a2, v=1, a=1).node
v3 = joined[0]
a3 = joined[1]

(
 ffmpeg
 .output(
 v3,
 a3,
 'out.mkv',
 vcodec='libx265', )
 .run()
)



But I don’t know how to cut *mainvid to a certain length like 10 minutes before joining. I know ss will help, but I don’t know how to use it for only mainvid.


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ffmpeg - how can I make a video out of video given a list of frames ?
28 avril 2020, par Adam GosztolaiI have a list of frames
frames = [23, 25, 26, 27, 28, 345, 346, 347]
and a video fileinput.mp4
recorded at 100 fps.


Could someone show me how to make a video
output.mp4
taking only frames fromframes
?

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FFmpeg - Turn a 1280x720 video into 720x1280 video and add blur
6 janvier 2021, par offishI've searched around and found multiple solutions. I've found one that works well, but the final video ends up being too big which makes the rendering slow.


I'm giving it a 1280x720 video and want it to turn out like shown here with 720x1280 as the resolution.


-lavfi "[0:v]scale=256/81*iw:256/81*ih,boxblur=luma_radius=min(h\,w)/40:luma_power=3:chroma_radius=min(cw\,ch)/40:chroma_power=1[bg];[bg][0:v]overlay=(W-w)/2:(H-h)/2,setsar=1,crop=w=iw*81/256"



This video ends up being 1280x2274 instead of 720x1280, everything else is fine except the speed and resolution.


-lavfi [0:v]scale=16/9*iw:16/9*ih,boxblur=luma_radius=min(h\,w)/40:luma_power=3:chroma_radius=min(cw\,ch)/40:chroma_power=1[bg];[bg][0:v]overlay=(W-w)/2:(H-h)/2,setsar=1,crop=w=720:h=1280



This cuts the original video, but ends up being 720x1280, faster than the first solution.


-lavfi "[0:v]scale=256/81*iw:256/81*ih,boxblur=luma_radius=min(h\,w)/40:luma_power=3:chroma_radius=min(cw\,ch)/40:chroma_power=1[bg];[bg][0:v]overlay=(W-w)/2:(H-h)/2,setsar=1,crop=w=iw*81/256,scale=720:1280"



This is the same as the first one, but it gets scaled again. It has the correct resolution, but is way to slow for my liking (only about 3.6 it/s, when I've tried other solutions which fluctuates around 35 it/s).


I guess my scaling is wrong, but I don't understand what I should multiply and divide by, to get the result I'm looking for.


Thanks.