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Autres articles (38)
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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 (...) -
Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
Sur d’autres sites (5785)
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Grab partial .mp4 video from onlline source
28 juillet 2016, par FlemingjpI want to be able to grab a partial mp4 file from an online source so I can produce quick thumbnails.
My idea was to pull a patial mp4 file from a http request using the header
Range: 'bytes=1000-'
However when I parse the data it doesn’t have the mp4 container therefore is corrupt. In Firefox it handles this easily as seeking to an unloaded part of the video is very quick.
How can I pull partial mp4 clips ? For example from here I could get a clip that is 0:28-0:30
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ffmpeg create video from a sequence of images
1er février 2021, par t97I have a sequence of images as follow :


img_1.png
img_2.png
img_3.png
...
img_1799.png



From the documentation I run this command


ffmpeg -f image2 -pattern_type glob -framerate 24 -i 'img_*.png' test-size.mp4



but it doesn't generate the video correctly. I also looked online but wasn't able to find the correct command.


what's the command to run to merge all the images so the output video is 30s long at 24 fps ?


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Got incorrect audio duration from ffmpeg
8 septembre 2021, par RemerazeI used an ffmpeg command to export parts of an audio clip :


ffmpeg -i {path} -acodec copy -ss {start_time} -to {end_time} {output_path}



Unfortunately, this has the side effect of not changing the time duration in the file's details section, making many programs I use think the time of the cut audio files is much more than it really is.


Is there a way to either make ffmpeg change the duration, or find a command in python that can change an audio file's "length" stat so I can do it manually ? I couldn't find any way online.


Thanks.