
Recherche avancée
Autres articles (69)
-
Récupération d’informations sur le site maître à l’installation d’une instance
26 novembre 2010, parUtilité
Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...)
Sur d’autres sites (10022)
-
Extract Thumbnails of Every Camera Change on a Video File
8 juillet 2013, par Henry MazzaIs there a way to detect and extract thumbnails of every sudden change (camera change, slide change, scene change, got it ?) of a video file (preferably h264).
Something in the lines of comparing keyframes and look for differences larger than some given constant.
-
Compiling FFMPEG on CentOS DigitalOcean
29 juillet 2015, par coder_ukI set up a DigitalOcean instance running CentOS 6.5 and successfully followed the guide to compile FFMPEG (https://trac.ffmpeg.org/wiki/CompilationGuide/Centos). Hurrah !
But of course I realised that by default, DigitalOcean creates a root user and so ffmpeg now lives in /root/bin/ffmpeg. Which isn’t ideal because when I want to exec the ffmpeg bin from nginx, I would have to run nginx as root for it to have permission.
Questions ...
1) Long-shot, but presumably if I change the owner of the ffmpeg binary to nginx, it still won’t work, because nginx won’t be able to access the /root folder it is in. Correct ?
2) I could run nginx as root (’user root’). But this seems like a very bad idea. Correct ?
3) Which leaves me with the option of creating a new user, and then compiling ffmpeg into its home folder. But : which user ? EC2 creates ’ec2-user’, so should I make my own equivalent for DO ? But then won’t I have to run nginx as that user, else I’ll run into the same problem ?
Or should I compile ffmpeg into the ’nginx’ home folder, if indeed it has one ? Is that how it is supposed to be done ?
Since compiling ffmpeg takes ages, I don’t want to keep doing it, and the static files all seem very out of date. Thanks
-
SRT protocol not found - Raspbery Pi 4 via ffmpeg
12 août 2021, par Tim MartinWe tried to stream from a rasp Pi 4 via SRT, but we got a error : "protocol not found". Our command line is :


ffplay srt://127.0.0.1:9500?mode=listener&latency=20000



We tried the following guides :
https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
how to compile ffmpeg with enabling libsrt
https://www.undergroundnews.dk/index.php/item/107-rtmp-eller-srt-streaming


Those guides worked so far and compiled but we still got the error message.


Do you have any ideas how to get the srt protocol working on a pi via ffmpeg ?