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Médias (1)
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1 000 000 (wav version)
26 septembre 2011, par
Mis à jour : Avril 2013
Langue : English
Type : Audio
Autres articles (39)
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Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
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 (...)
Sur d’autres sites (6574)
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Projecting camera feed with a delay
28 septembre 2022, par Viktor VoščekI'm working on a project which involves capturing output from a camera via HDMI (Sony Alpha A7 IV), and projecting it via a laser/lamp projector, but the catch is that the stream which is going into the projector should be delayed by 4 minutes. (If you start recording something at 10:00am, it will start playing back at 10:04am, etc.) It should be capturing and playing back the feed non-stop for the whole day.


First I was thinking of using FFplay to display a DirectShow stream from a HDMI capture card (like the Elgato 4K60 Pro) and opening the FFplay window on the 'projector screen', but I wasn't able to find any way to manually add delay to the stream. My second idea was to record the actual feed to a video file, and then immediately play it back in intervals (still using FFmpeg+FFplay).


Any other ideas/thoughts ?


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FFMPEG extracting frames is slow even with CUDA
5 juin 2023, par Ξένη ΓήινοςI have a bunch of videos at some location that I want to extract frames from.


The videos are of .wmv format, and have a framerate of 25, and I want to extract all frames from them losslessly.


And I do have a dedicated graphics card (NVIDIA Geforce GTX 1050 Ti, I know it's old), so I want to utilize it to accelerate frame extraction. I downloaded FFMPEG with CUDA support from www.gyan.dev for exactly this.


I came up with this PowerShell command :


gci C:\Users\Xeni\Documents -filter *.wmv | %{
 $folder = 'C:\Users\Xeni\Desktop\' + $($_.name -replace '.wmv')
 md $folder;
 D:\ffmpeg\ffmpeg.exe -hwaccel cuda -i $_.fullname -vf fps=25 "$folder\%05d.bmp"
}



But somehow it is slow, its disk write speed is less than 100 MiB/s and it uses less than 1% GPU, and it takes about 2 seconds to process 25 frames.


How can I speed up this command ?


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Revision 37301 : une image qui n’est plus nécessaire
15 avril 2010, par kent1@… — Logune image qui n’est plus nécessaire