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Autres articles (80)
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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" ; -
XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...) -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (4149)
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GPU to accelerate ffmpeg filters [closed]
7 décembre 2022, par mgbaI'm using ffmpeg for complex filters like cutting video, merging two or more videos, slow down, blur video, speed up video, converting from HEVC to h264. However, I want to speed up by using hwaccel for all these operations. I had rebuild ffmpeg source and enabled —enable-libnpp, —enable-cuda-nvcc but none of the operation is working when I use hwaccel.


Can I know for which filter complex operations, I can use GPU for hwaccel.


Regards,
mgba


I tried using hwaccel for filter complex operations.


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Tranformation of any input video file to mxf is failing
9 février 2021, par Avinash ModiI have recently upgraded ffmpeg 2.8.1 to 4.3.1. Post upgradation, I see that for transformation of any input video file format to mxf is failing (while with older version it works fine).


Command used :


ffmpeg -i input.avi -f mxf_d10 -r 29.97 -s 720x512 -b:v 30000k -g 12 -qscale 15 -acodec pcm_s16le -ac 4 -ar 48000 -vol 256 -strict experimental VIDEO1-173888047.mxf



Error :




[mxf_d10 @ 000000e368e07380] track 0 : frame size does not match index unit size,
18253 != 125125
av_interleaved_write_frame() : Operation not permitted




Can anyone help me out on this ?


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ffmpeg : how to clear the audio from a specified time window in a mp4 video [closed]
26 août 2023, par ShipingI have a mp4 file and I want to clear the audio in a time window. I've searched around and tried a few ways, but can't make it to work. The closest I managed to get is a command like the following, which cleared the audio in the video from 5 seconds to the end.


ffmpeg -i in.mp4 -af afade=t=out:st=5:d=1 out.mp4



Unfortunately d=1 here means to fade out the audio in 1 second. not to clear the audio for 1 second, which is what I want. I think what I want to do should be a common operation and ffmpeg should already have a way to achieve it. For example, ffmpeg could have a corresponding filter to fade in the audio, such as afade=t=in:st=10:d=1. Any help will be appreciated. Thanks.