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Autres articles (67)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
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 -
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 (12448)
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resize and crop HD video into square video using ffmpeg
7 mai 2021, par Ahmet CetinI want to scale and crop HD video (1920x1080) into square one while adding watermark. I tried


ffmpeg

-i video.mp4

-i watermark.png

-filter_complex "[0]scale=720:720,crop=720:720[a] ;[1]scale=720:720[b] ;[a][b]overlay=(W-w)/2 :(H-h)/2"

output.mp4

but it produces output with 889x500. Can anyone help me ? What I'm doing wrong ?


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ffmpeg remove multiple segments from a video rotate and crop video
2 novembre 2017, par 1234567ffmpeg remove multiple segments from a video rotate and crop video
I have a video of 2 min 25 seconds , i want to remove part from 10 second to 16 second and 20 second to 26 second and rotate video and crop it
I am trying this command
"-y", "-i", j,
"-filter_complex",
"[0:v]trim=start=10:end=16,setpts=PTS-STARTPTS[a]; " +
"[0:v]trim=start=20:end=26,setpts=PTS-STARTPTS[b]; " +
"[0:a]atrim=start=10:end=16,asetpts=PTS-STARTPTS[c]; " +
"[0:a]atrim=start=20:end=26,asetpts=PTS-STARTPTS[d]; " +
"[a][c][b][d]concat=n=2:v=1:a=1[e][f],"+
"crop=" + 40 + ":" + 20 + ":" + 100 + ":" + 100,"+
"transpose=1", "-map", "'[e]'" ,"-map",
"'[f]'", "-preset", "ultrafast",outwhat is the correct command to do it
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How to merge webm video with mp4 video with transperency ?
30 novembre 2017, par kostya572I have 1080p webm video and 500x300 mp4 video. How could I place muted mp4 video on top-center position of webm video with transparency ? The output file format needed ".webm". Here what similar code I found, but it uses two mp4 videos and second video scales full width on front of first one :
ffmpeg \
-i in1.mp4 -i in2.mp4 \
-filter_complex " \
[0:v]setpts=PTS-STARTPTS, scale=480x360[top]; \
[1:v]setpts=PTS-STARTPTS, scale=480x360, \
format=yuva420p,colorchannelmixer=aa=0.5[bottom]; \
[top][bottom]overlay=shortest=1" \
-vcodec libx264 out.mp4