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Autres articles (108)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...)
Sur d’autres sites (11163)
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How to convert a CCTV footage into time lapse video by cutting parts of the video by a set interval on FFMPEG [duplicate]
2 décembre 2020, par markI have bunch of CCTV footages and I want it to look like it was recorded from a time lapse camera. One video file is around 3 hours long capturing scenes in real time (from 1pm-3pm for example). And in one day, I'll get around 8 footages (8files * 3hours = 24hours = 1 day)


I want to convert those 24hours worth of footages to 1min making 1 day = 1min of video not just making it fast but actually cutting some of the scenes by a set interval. Usually, a time lapse camera has an interval of one photo per 10 min and at the end of the day, it will stitch them into one video. How can I do something like that on FFMPEG ?


I'm using FFmpeg Batch converter and here's my code so far. It just makes my videos faster but not cutting it into itervals


-filter:v "setpts=0.25*PTS" -an



I ended up with this code :


-vf framestep=25,select='not(mod(n,1000))',setpts=N/FRAME_RATE/TB -an



The above code will make a 1hr long video into 4sec which is perfect for my needs.


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FFMPEG concat video finished but the video missing
27 avril 2017, par Thien HoangI was concatenated video with FFMPEG. Here is code :
ffmpeg -i "concat:video1.webm|video2.webm|video3.webm|video4.webm" -c copy output_video.webm
After concatenate finished, I play the video but the video display only video1. It missing the video2, video3, video4. Although, The output_video.webm is full size. I don’t know why ? Please help me, How to fix it ?
Thank you so much,
Bien -
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.