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Autres articles (34)
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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 -
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 (...) -
Création définitive du canal
12 mars 2010, parLorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
A la validation, vous recevez un email vous invitant donc à créer votre canal.
Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...)
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Play MJPEG stream to v4l2loopback device
28 juillet 2020, par ahofferI have a RaspberryPi with a V1 camera.


I want to use it as my camera for Zoom, Teams, and other virtual meetings.


I have the RaspberryPi streaming motion JPEG over http using the application named "Motion".


I created a v4l2 dummy device on my linux laptop as a virtual camera.


However, I can't get the mjpeg stream to play to the v4l2 dummy device with the simple command :


ffmpeg -i "http://milan.local:8081" -map 0:v -f v4l2 /dev/video4


The result is :


Input #0, mpjpeg, from 'http://milan.local:8081':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 640x480 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
 Stream #0:0 -> #0:0 (mjpeg (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[v4l2 @ 0x55a04567bbe0] Unknown V4L2 pixel format equivalent for yuvj420p
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 --




What options am I missing from my
ffmpeg
command ?

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swscale : fix NEON hscale init
7 mai 2020, par Josh de Kockswscale : fix NEON hscale init
The NEON hscale function only supports X8 filter sizes and should only
be selected when these are being used. At the moment filterAlign is
set to 8 but in the future when extra NEON assembly for specific sizes is
added they will need to have checks here too.The immediate usecase for this change is making the hscale checkasm
test easier and without NEON specific edge-cases (x86 already has these
guards).Signed-off-by : Josh de Kock <josh@itanimul.li>
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checkasm : add function to check and diff memory
20 juin 2019, par Martin Storsjö