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Autres articles (100)
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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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 (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (13308)
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ffmpeg final video no audio when combining images + video clips that have sound
14 juillet 2022, par Cabdi CilmI am using pytube to merge some downloaded clips and it downloads the clips with audio in the final folder, however when it combines the 2 clips together, there is no audio.


config.IMG_WIDTH = None
final_clip = concatenate(clips, method="compose")
ffmpeg_write_video(
 final_clip,
 os.path.join(os.path.dirname(__file__), "final", "final_vid.mp4"),
 fps=60,
 codec="h264_amf",
 bitrate="8000k",
 logger="bar" if config.LOADING_BAR == "Y" else None,
 threads=5,
 ffmpeg_params=[
 "-tile-columns",
 "6",
 "-frame-parallel",
 "0",
 "-auto-alt-ref",
 "1",
 "-lag-in-frames",
 "25",
 "-g",
 "128",
 "-pix_fmt",
 "yuv420p",
 "-row-mt",
 "1",
 ],
)



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FFMPEG - 2-pass video conversion final file size is larger than expected
14 juin 2022, par Kevin KorbWe are converting files and the target filesize is important. For one version of the video it can not be above 750KB.


We are using the 2-pass encoding and specifying the target audio bitrate and target video bitrate, however the longer the duration of the video, the larger the file becomes and exceeds our 750KB target.




For example, our file is 53.3 seconds, we know our final target of
750KB. We like our audio at 48kbps (mono).


So we calculate our target (total) bitrate at : 750*8/53.3 = 112.57
total kbps Audio bitrate = 48kbps Video bitrate = 112-48 = 64kbps
video


We would expect the file produced to be 746.2KB. (112*53.3 / 8)


The file produced is 850k(ish).




Is there something that takes up space in the file that isn't video or audio that we need to take into consideration ?


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swscale : aarch64 : Optimize the final summation in the hscale routine
20 avril 2022, par Martin Storsjöswscale : aarch64 : Optimize the final summation in the hscale routine
Before : Cortex A53 A72 A73 Graviton 2 Graviton 3
hscale_8_to_15_width8_neon : 8273.0 4602.5 4289.5 2429.7 1629.1
hscale_8_to_15_width16_neon : 12405.7 6803.0 6359.0 3549.0 2378.4
hscale_8_to_15_width32_neon : 21258.7 11491.7 11469.2 5797.2 3919.6
hscale_8_to_15_width40_neon : 25652.0 14173.7 12488.2 6893.5 4810.4After :
hscale_8_to_15_width8_neon : 7633.0 3981.5 3350.2 1980.7 1261.1
hscale_8_to_15_width16_neon : 11666.7 5951.0 5512.0 3080.7 2131.4
hscale_8_to_15_width32_neon : 20900.7 10733.2 9481.7 5275.2 3862.1
hscale_8_to_15_width40_neon : 24826.0 13536.2 11502.0 6397.2 4731.9Thus, this gives overall a 8-29% speedup for the smaller filter
sizes, around 1-8% for the larger filter sizes.Inspired by a patch by Jonathan Swinney <jswinney@amazon.com>.
Signed-off-by : Martin Storsjö <martin@martin.st>