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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (77)
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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 (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (9529)
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FFMPEG Audio/video out of sync after cutting and concatonating
31 janvier 2020, par Ham789I am attempting to take cuts from a set of videos and concatonate them together with the concat demuxer.
However, each video’s audio is out of sync in the output. At the beggening of each clip there is a short period of silence before the audio begins.
For each video, I decode it, trim a clip from it and then encode it to 4k resolution at 25 fps with its audio :
ffmpeg -ss 0.5 -t 0.5 -i input_video1.mp4 -r 25 -vf scale=3840:2160 output_video1.mp4
I then take each of these videos and concatonate them together with the concat demuxer :
ffmpeg -f concat -safe 0 -i cut_videos.txt -c copy -y output.mp4
I am taking short cuts of each video (approximately 0.5s)
I am using Python’s subprocess to automate the cutting and concatonating of the videos.
It seems the audio becomes out of sync after the trimming step (not the concatonation) as when I play back the intermediate cut video files (
output_video1.mp4
in the above code), there seems to be the same silence before the audio comes in at the start of the video.When I concatonate the videos, I get a lot of these warnings :
[mp4 @ 0000021a252ce080] Non-monotonous DTS in output stream 0:1; previous: 51792, current: 50009; changing to 51793. This may result in incorrect timestamps in the output file.
From this post, it seems to be a problem with cutting the videos and their timestamps. The solution proposed in the post is to decode, cut and then encode the video however I am already doing that.
How can I ensure the audio and video are in sync ?
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How to Bulk Add Outro Video with ffmpeg ?
4 janvier 2018, par AllarI would like to add a short outro video to a list of videos or add a "watermark" that covers the entire video during the last 5 seconds. How can I achieve this ? I added ffmpeg in the title but if there is another free way of doing it in bulk then I am all ears. My OS is Windows 10.
Thanks !
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Adding SoundFX to video with python or FFmpeg
10 juin 2020, par João AbrantesI have various short SoundFX files (.mp3) that I want to merge with a video audio at various times. What's the fastest way to achieve this with Python or FFmpeg ?