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Autres articles (45)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Changer son thème graphique
22 février 2011, parLe thème graphique ne touche pas à la disposition à proprement dite des éléments dans la page. Il ne fait que modifier l’apparence des éléments.
Le placement peut être modifié effectivement, mais cette modification n’est que visuelle et non pas au niveau de la représentation sémantique de la page.
Modifier le thème graphique utilisé
Pour modifier le thème graphique utilisé, il est nécessaire que le plugin zen-garden soit activé sur le site.
Il suffit ensuite de se rendre dans l’espace de configuration du (...) -
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 (4218)
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Decoding to specific pixel format in ffmpeg with C++
26 juillet 2019, par Lucas ZanellaI need to decode video but my video player only supports RGB8 pixel format. So I’m looking into how to do pixel format conversion in the GPU, preferably in the decoding process, but if not possible, after it.
I’ve found How to set decode pixel format in libavcodec ? which explains how to decode video on ffmpeg to an specific pixel format, as long as it’s suported by the codec.
Basically,
get_format()
is a function which chooses, from a list of supported pixel formats from the codec, a pixel format for the decoded video. My questions are :- Is this list of supported codec output formats the same for all computers ? For example, if my codec is for H264, then it will always give me the same list on all computers ? (assuming same ffmpeg version of all computers)
- If I choose any of these supported pixel formats, will the pixel format conversion always happen in the GPU ?
- If some of the pixel format conversions won’t happen in the GPU, then my question is : does
sws_scale()
function converts in the GPU or CPU ?
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How to create a video from images on a .tif format with FFmpeg ?
18 décembre 2018, par ecjbI just discovered
FFmpeg
: awesome software. After reading this this stackoverflow question I could efficiently create a movie with pictures in a.png
format with the following line :ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4
In an experiment, however, I took high quality pictures on a
.tif
format and would like to create a movie out of them. I just copied the line above and replaced the name of the files as well as the format.png
by.tif
but I got a message error saying "This format is not supported
". Here is the report :[tiff @ 0x7fce5c02a600] This format is not supported (bpp=12, bppcount=1)
Last message repeated 1 times
Error while decoding stream #0:0: Invalid data found when processing input
[tiff @ 0x7fce5c01bc00] This format is not supported (bpp=12, bppcount=1)
Last message repeated 7 times
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Conversion failed!Should I just forget it or is there a workaround with
ffmpeg
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avformat/format : Replace nodat by enum
30 janvier 2016, par Michael Niedermayer