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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Podcasting Legal guide
16 mai 2011, par
Mis à jour : Mai 2011
Langue : English
Type : Texte
Autres articles (50)
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Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Les notifications de la ferme
1er décembre 2010, parAfin d’assurer une gestion correcte de la ferme, il est nécessaire de notifier plusieurs choses lors d’actions spécifiques à la fois à l’utilisateur mais également à l’ensemble des administrateurs de la ferme.
Les notifications de changement de statut
Lors d’un changement de statut d’une instance, l’ensemble des administrateurs de la ferme doivent être notifiés de cette modification ainsi que l’utilisateur administrateur de l’instance.
À la demande d’un canal
Passage au statut "publie"
Passage au (...)
Sur d’autres sites (6155)
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Converting mkv to h264 FFmpeg
14 janvier 2021, par Rikus HoneyEDIT :
This question has become very popular and is one of the top results for searching "convert mkv to h264 ffmpeg" and thus I feel it is appropriate to add that for anyone stumbling upon this question to rather use


ffmpeg -i input.mkv -c:v libx264 -c:a aac output.mp4



as
libvo_aacenc
has been removed in recent versions of FFmpeg and it now has a native aac encoder. For more information visit the FFmpeg wiki page for encoding AAC.

Here is the original question :


I would like to convert my .mkv files to .mp4 using FFmpeg. I have tried the following code :


ffmpeg -i input.mkv -c:v libx264 -c:a libvo_aacenc output.mp4



But I get the error :




Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height.




Is there any way to get around this ? I have tried setting the bitrate of the audio but the problem seems to persist.


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How to extract transparent images in video with FFMPEG
17 avril 2021, par El ŠidëyøusšI have an Mp4 video with a black background, I managed to extract the images from the video with Ffmpeg but these images have a black background I would like to know how to make these images transparent, if it is possible with FFmpeg, thanks for your help


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FFMPEG filter instances names don't work with "sendcmd" ?
13 septembre 2023, par VladStepu2001I have two
drawbox
filter instances that I need to animate separately.

I've usedsendcmd
for the one instance already, and it worked fine.

But when I've added the second one, I gave a name to both of them like this :


drawbox@one=0:0:iw:ih:red:fill,drawbox@two=0:0:iw:ih:black:fill



Then, I've tried to use
sendcmd
like this :

drawbox@one=0:0:iw:ih:red:fill,drawbox@two=0:0:iw:ih:black:fill,
sendcmd=c='0.0-5.0 [expr] drawbox@one w W*(T/5)
 0.0-5.0 [expr] drawbox@two h H*(T/5)'



But that didn't work, the rectangles stayed still.


What I am doing wrong ?