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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. -
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 (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (8529)
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I am trying to save frames from a webcam via Python and ffmpeg, but the video becomes way to fast
10 mai 2022, par MatthiasI get a stream of
cv2
images from my webcam and want to save it to a video file. After playing a bit withcv2.VideoWriter()
it turned out that usingffmpeg
would provide more options and - apparently, following a few threads here on SO - lead to better results. So I gave the VidGear Python library a try, and it seems to work fine.

There is one catch though : My webcam provides a variable framerate, most of the time between 10 and 30 FPS. When saving these frames the video file becomes way too fast, like watching in fast-forward. One real-time minute becomes only a few seconds in the video.


I tried to play with various combinations of the ffmpeg's
-framerate
and/or-r
parameters, but without luck. Here is the command I am using right now :

ffmpeg -y -f rawvideo -vcodec rawvideo -s 1920x1080 -pix_fmt bgra -framerate 25.0 -i - -vcodec libx265 -crf 25 -r 25 -preset fast 



For the records, I am creating the
WriteGear
class from the VidGear library like this :

video_params = {
 "-vcodec": "libx265",
 "-crf": 25,
 "-input_framerate": 25,
 "-r": 25,
}
WriteGear(output_filename=video_file, logging=True, **video_params)



Any ideas what I am doing wrong here and how I need to call ffmpeg ?


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FFMPEG : How to save the effects (blur, adding image , ...) on the input video instead of creating a one ?
9 juillet 2016, par DrupalistI need to save the effects on the current video instead of creating a one. For example this code
ffmpeg -i input.mp4 -i logo.png -filter_complex "[1:v][0:v]scale2ref=(505/384)*ih/8:ih/8[wm][base];[wm]setsar=1[wmsar];[base][wmsar]overlay=10:10" -pix_fmt yuv420p -c:a copy output.mp4
pastes an image on a video, but I need the image to be pasted to
input.mp4
notoutput.mp4
.I tried
ffmpeg -i input.mp4 -i logo.png -filter_complex "[1:v][0:v]scale2ref=(505/384)*ih/8:ih/8[wm][base];[wm]setsar=1[wmsar];[base][wmsar]overlay=10:10" -pix_fmt yuv420p -c:a
but it didn’t work.
Thanks in advance.
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How to save frame from VOB with correct size ?
18 mars 2017, par Paulo BarrettoI am saving single frames from a vob file with ffmpeg.
ffprobe shows for my vob file :
Stream #0:1[0x1e0] : Video : mpeg2video (Main), yuv420p(tv), 720x480
[SAR 8:9 DAR 4:3], Closed Captions, 3750 kb/s, 29.97 fps, 29.97 tbr,
90k tbn, 59.94 tbcMy command line is
ffmpeg -i File1.vob -ss 10 -q:v 2 -vframes 1 -an -sn frame10s.jpg
My jpeg files are being saved with 720x480, horizontally stretched. How can I make them be saved with correct display ratio 640x480 ?