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Autres articles (80)
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MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)
Sur d’autres sites (10689)
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Ffmpeg cut Fmp4 in specific range has no content
13 avril 2020, par ExpressingxI want to cut Fragmented MP4 using



ffmpeg.exe -i original.mp4 -c copy -ss 00:01:00 -to 00:06:00 out.mp4




No errors are thrown, however the cut video does not have any content.



If I use
trim
filter it works, but as far as I know it re-encodes. So for big files (2-3GB+) it will be slow


ffmpeg.exe -i original.mp4 -vf trim=0:6 out.mp4 




Any suggestions ?


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ffmpeg alpha channel of images lost
4 mai 2021, par gilad sUsing the following command I make images appear partially transparent. This seems to work as expected.


convert original.jpg -alpha set -background none -channel A -evaluate multiply 0.2 +channel image_01.png
 convert original.jpg -alpha set -background none -channel A -evaluate multiply 0.2 +channel image_02.png



After the images are created I use ffmpeg to turn them into a video :


ffmpeg -i image_%02d.png -pix_fmt yuv420p -c:v libx264 result.mp4



The resulting video doesn't include the partial transparency. The images appear just like the original. It seems the alpha channel of the images is lost.


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How to disable non-1st Audio Streams/Tracks in FFmpeg for mp4 files
21 avril 2018, par DipeshMy end goal is to create a single FFmpeg command that will convert my h264.DTS.mkv files to a format that is compatible with my AppleTV, whilst preserving the original quality.
I’m almost there, however I have not been able to figure out how to disable streams/tracks.
So far I have got :
ffmpeg -i FILE \
-y -strict experimental \
-map 0:0 -map 0:1 -map 0:1 -map 0:1 -map 0:2 \
-c:0 copy -c:1 aac -ac:a 2 -c:2 ac3 -ac:a 6 -c:3 copy -c:4 mov_text \
OUTPUTThis produces an output file that looks like :
- H264 video track (enabled) [copied from original]
- AAC 2 channel audio track (enabled)
- AC3 6 channel audio track (enabled)
- DTS 6 channel audio track (enabled) [copied from original]
- subtitle track (enabled)
The problem is I need it to look like :
- 1 H264 video track (copied from original) (enabled)
- 1 AAC 2 channel audio track (enabled)
- 1 AC3 6 channel audio track (disabled)
- 1 DTS 6 channel audio track (copied from original) (disabled)
- 1 subtitle track (enabled)
Hence I need to know how I can disable the non-1st Audio Streams/Tracks.
From what I have read, this is part of the track header atom at the location "tkhd.flags". But I have not been able to figure out how to set this via command line arguments.
Any help would be greatly appreciated.