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Autres articles (77)
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D’autres logiciels intéressants
12 avril 2011, parOn ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
Videopress
Site Internet : (...) -
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 (...) -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)
Sur d’autres sites (9689)
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FFmpeg libx264 Llicense
2 juillet 2014, par user416472We have Java Spring application. The application interacts with FFmpeg through Java Runtime.exec() call in order to encode video into mp4 format. Are we ok with the commercial aspect of our application, having in mind that libx264 is released under GPL license, ffmpeg under LGPL license and we are using ffmpeg as external command line utility already installed and hosted on the client’s computer ?
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Trying to crop an image in ffmpeg using alphamerge but produces wrong alpha
12 septembre 2021, par Alex StylI am using alphamerge in order to crop an image within a circle.


What I have so far is :


ffmpeg -f lavfi -i "color=c=white:size=240x240" -i avatar.png -i mask.png -filter_complex \
 "[1][2]alphamerge[img]; \
 [0][img]overlay[out]" -c:v png -map "[out]" -pix_fmt rgba -t 5 -y out.mp4 2>&1



with avatar.png and mask.png respectively being :




This produces the following output (1 frame of the output video) :




which is unexpected, given the original input is much darker than this.


How can I crop the 'avatar.png' using the 'mask.png' so that the output is the avatar.png cropped in a circle and keeping the same alpha ?


PS : The important bit here is for me to be able to crop the original image and maintaining the correct colors/apha of the original image. If there is an other way of doing this (other than alphamerge) I am happy to hear it.


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flac : Fix channel order for mono files.
28 juin 2014, par Erik de Castro Lopoflac : Fix channel order for mono files.
* The default channel mask for mono files was 0x0001 (front left) but it
makes more sense to use 0x0004 (front center) for such files.* Also FLAC will accept not only mono WAV files with 0x0001 mask, but also
with 0x0002 (requested at https://sourceforge.net/p/flac/bugs/390/)
and 0x0004 (e.g. SoX creates mono files with this mask).* The comment about channel support was updated.
* The error message
"Use —channel-map=none option to store channels in current order ; FLAC files
must also be decoded with —channel-map=none to restore correct order."
is misleading : FLAC never changes the order of channels.
Decoding with this options also sets the channel mask of the resulting WAV
file to 0. Without this option the mask is equal to the value of
WAVEFORMATEXTENSIBLE_CHANNEL_MASK tag.Patch-from : lvqcl <lvqcl.mail@gmail.com>