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Autres articles (105)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
Sur d’autres sites (18427)
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ffmpeg overlay video on image and remove video black background
15 septembre 2021, par Moslem AslaniIm using this ffmpeg command to overlay a video on image (with remove black background) :


ffmpeg -loop 1 -i image.png -i video.mp4 -filter_complex [1:v]colorkey=0x000000:0.1:0.1[ckout];[0:v][ckout]overlay[out] -map [out] -t 5 -c:a copy -c:v libx264 -y result.mp4





But as you can see in the picture, the black parts of the ball have also disappeared. How can I solve this problem ?


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How to get better video quality using Accord.Video.FFMPEG.DLL
31 juillet 2023, par HighwayRobI have developed a Visual Studio Winapp that produces a video file utilizing Accord.Video.FFMPEG.DLL.


The quality the video is less than the original images.
Here is the code and then a sample original image and snapshot of the resulting video.


What can I change to improve the video image ?


VideoFileWriter writer = new VideoFileWriter();
 writer.Open(outfile, width, height, 1, VideoCodec.Mpeg4);
 for (int i = firstrow; i <= testframes; i++)
 {
 Bitmap bitmap = new Bitmap(ffiles[i, 0].ToString());
 writer.WriteVideoFrame(bitmap);
 bitmap.Dispose();
 }



I tried Bitmap image = new Bitmap(width, height, PixelFormat.Format64bppArgb) ;




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ffmpeg transcoding one input video stream and multiple output video streams in the same file
28 janvier 2020, par user2165262I am trying to transcode a single video file with 1 video stream and several audio streams to the file having same video stream in different bitrates/sizes with correct padding at the same time.
the command I use is :
ffmpeg -y -ss 600 -t 600 -i "INPUT.mkv" -map_chapters -1 -map 0:0 -c:v libx264 -keyint_min 48 -g 96 -bufsize 350k -b:v 350k -minrate 300k -maxrate 400k -profile:v baseline -level 3.0 -preset slow -vf "scale=iw*min(480/iw\,272/ih):ih*min(480/iw\,272/ih),pad=480:272 :(480-iw)/2 :(272-ih)/2" -map 0:0 -c:v libx264 -keyint_min 48 -g 96 -bufsize 650k -b:v 650k -minrate 500k -maxrate 800k -profile:v baseline -level 3.1 -preset slow -vf "scale=iw*min(640/iw\,360/ih):ih*min(640/iw\,360/ih),pad=640:360 :(640-iw)/2 :(360-ih)/2" -map 0:1 -c:a libfaac -b:a 32k -ar 44100 -f mpegts OUTPUT.m2ts
ffmpeg creates two video streams, however the bitrate and resolution for all of them are taken from the last video arguments - i.e. both streams are 640x360 :
Output #0, mpegts, to ’OUTPUT.m2ts’ : Stream #0:0(eng) : Video : h264, yuv420p, 640x360 [SAR 559:560 DAR 559:315], q=-1—1, 650 kb/s, Stream #0:1(eng) : Video : h264, yuv420p, 640x360 [SAR 559:560 DAR 559:315], q=-1—1, 650 kb/s, 90k tbn, 23.98 tbc (default) Stream #0:2(rus) : Audio : aac, 44100 Hz, 5.1, s16, 32 kb/s (default) Stream mapping : Stream #0:0 -> #0:0 (h264 -> libx264) Stream #0:0 -> #0:1 (h264 -> libx264) Stream #0:1 -> #0:2 (aac -> libfaac) Press [q] to stop, [?] for help
Is it practically possible to make transcoding to several bitrates to the same file ?