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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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Inserting an image inside a video every few frames using ffmpeg
9 mars 2017, par Erez HochmanCan I use FFMPEG to insert an image every 20 frames in a video ?
I’m trying to create a subliminal message experiment and I thought it would be an easy way to make it but I can’t find anything online.I tried to make something myself and created a script that :
1.splits a file into audio and video files
2.splits the video into frames
3.overwrites every 20th image in the sequence with the message image
4.re-encoding the video
5.concatenating it with the original audiothis works but it’s way more disk space consuming to be comfortable, is there a better way to do this ?
any advice or thought would be happily welcome. -
Inserting an image inside a video every few frames using ffmpeg
31 juillet 2023, par Erez HochmanCan I use FFMPEG to insert an image every 20 frames in a video ? 
I'm trying to create a subliminal message experiment and I thought it would be an easy way to make it but I can't find anything online.



I tried to make something myself and created a script that :

1.splits a file into audio and video files

2.splits the video into frames

3.overwrites every 20th image in the sequence with the message image

4.re-encoding the video

5.concatenating it with the original audio


this works but it's way more disk space consuming to be comfortable, is there a better way to do this ?

any advice or thought would be happily welcome.

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Using Java and ffmpeg to most efficiently merge mp3 audio file and jpeg image file to a video file [closed]
25 juin 2020, par EugenI'm looking for an efficient way in Java to merge a large .mp3 file and a single .jpg image to a video format for youtube. If I use :


ffmpeg -loop 1 -i image.jpg -i audio.mp3 -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest output.mp4



the result is very slow, especially for large .mp3 files. Is it possible to do it more efficiently with ffmpeg ? I know there must be a way to do it much more efficiently, like all the online converters are doing it.