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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (50)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
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Submit enhancements and plugins
13 avril 2011If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
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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
Sur d’autres sites (7183)
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ffmpeg - How to estimate CRF for h264 video target size
10 septembre 2022, par the_RRAccording to the x264 encode documentation, in the CRF topic, it is informed that for every 6 additional points, the file size is reduced by approximately 50%.


From this statement, it is assumed that the CRF has an exponential influence in reducing the final size of the video. But what is the exponential ratio ?


I wouldn't want to use CRF18 with max-rate adjusted to reach a final size, as maxrate damage complex video scenes more strongly, as bitrate reduction via max_rate is not uniform, but it hits the scenes that require the highest bitrate first.


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moviepy ffmpeg stderr to tkinter interface
1er avril 2018, par Alexander PerlmanHi stackoverflow community,
I’m a novice python hobbyist. I wrote a python / ffmpeg script using moviepy that batch concatenates videos. I then designed an interface using tkinter.
Now I want to redirect the stderr output from FFMPEG to the tkinter interface so that users can review the progress directly in app instead of needing the Sublime text console.
I’ve done a lot of research but I’m in way over my head. Any tips would be greatly appreciated.
Here’s the moviepy component. The gui is pretty cut and dry
#import video clips
mainvid = VideoFileClip(fullpath, audio=True)
intro = VideoFileClip("intro.mp4", audio=True)
black = VideoFileClip("black1s.mp4", audio=True)
#concatenate video clips
final = concatenate_videoclips([black, intro, mainvid, black]) final.fps=24
#actually write file
final.write_videofile(output, audio=True, audio_fps=48000, ffmpeg_params=[ "-r","24000/1001", "-b:v", "50M", "-level:v", "4.1", "-c:a", "libvo_aacenc", "-b:a", "256K", "-colorspace", "bt709"]) -
FFMPEG not creating thumbnails
12 juin 2016, par MixedVegMy ffmpeg command in php is
echo $cmd_thumbnail_create = ("\"$ffmpeg\" -i \"" . $dir.$videopath . "\" -an -ss $getFromSecond \"" . $dir.$thumbnailpath ."\"");
exec($cmd_thumbnail_create);Output of which is
"C :\FFMPEG\bin\ffmpeg" -i "C :/xampp/htdocs/final/uploaded_videos/intro_en.mp4" -an -ss 6 "C :/xampp/htdocs/final/thumbnail/intro_en.jpg"
This when copied and executed on the command prompt creates the thumbnail at proper location with proper name.
Any suggestions ?