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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (111)
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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 -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.
Sur d’autres sites (11682)
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lavu/pixdesc : handle xv30be in av_[read|write]_image_line
4 décembre 2022, par Philip Langdalelavu/pixdesc : handle xv30be in av_read_image_line
xv30be is an obnoxious format that I shouldn't have included in the
first place. xv30 packs 3 10bit channels into 32bits and while our
byte-oriented logic can handle Little Endian correctly, it cannot
handle Big Endian. To avoid that, I marked xv30be as a bitstream
format, but while that didn't produce FATE errors, it turns out that
the existing read/write code silently produces incorrect results, which
can be revealed via ubsan.In all likelyhood, the correct fix here is to remove the format. As
this format is only used by Intel vaapi, it's only going to show up
in LE form, so we could just drop the BE version. But I don't want to
deal with creating a hole in the pixfmt list and all the weirdness that
comes from that. Instead, I decided to write the correct read/write
code for it.And that code isn't too bad, as long as it's specialised for this
format, as the channels are all bit-aligned inside a 32bit word. -
swresample/resample : do not increase phase_count on exact_rational
17 juin 2016, par Muhammad Faizswresample/resample : do not increase phase_count on exact_rational
high phase_count is only useful when dst_incr_mod is non zero
in other word, it is only useful on soft compensationon init, it will build filter with low phase_count
but when soft compensation is enabled, rebuild filter
with high phase_countthis approach saves lots of memory
Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by : Muhammad Faiz <mfcc64@gmail.com> -
Is there an efficient way to use ffmpeg to create a huge quantity of small video file, cut from a larger one ?
9 mars 2024, par Giuliano OliveriI'm trying to cut video files into smaller chunks. (each one being one word said in the video, so they're not all of equal size)


I've tried a lot of different approaches to try to be as efficient as possible, but I can't get the runtime to be under 2/3rd of the original video length. That's an issue because I'm trying to process 400+ hours of video.


Is there a more efficient way to do this ? Or am I doomed to run this for weeks ?


Here is the command for my best attempt so far


ffmpeg -hwaccel cuda -hwaccel_output_format cuda -ss start_timestamp -t to_timestamp -i file_name -vf "fps=30,scale_cuda=1280:720" -c:v h264_nvenc -y output_file



Note that the machine running the code has a 4090
This command is then executed via python, which gives it the right timestamps and file paths for each smaller clip in a for loop


I think it's wasting a lot of time calling a new process each time, however I haven't been able to get better results with a split filter ; but here's the ffmpeg-python code for that attempt :


Creation of the stream :


inp = (
 ffmpeg
 .input(file_name, hwaccel="cuda", hwaccel_output_format="cuda")
 .filter("fps",fps=30)
 .filter('scale_cuda', '1280','720')
 .filter_multi_output('split')
)



Which then gets called in a for loop


(
 ffmpeg
 .filter(inp, 'trim', start=row[1]['start'], end=row[1]['end'])
 .filter('setpts', 'PTS-STARTPTS')
 .output(output_file,vcodec='h264_nvenc')
 .run()
)