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Géodiversité
9 septembre 2011, par ,
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USGS Real-time Earthquakes
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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
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Podcasting Legal guide
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Autres articles (101)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
MediaSPIP Core : La Configuration
9 novembre 2010, parMediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...) -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)
Sur d’autres sites (9290)
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how to get 120fps encoded video to play at "normal" speed instead of slow mo
1er mars 2023, par Patrick VelliaI used my GoPro Hero10 to record at 4k 120fps on a green screen. This original video plays slo-mo in QuickTime but "normal" speed in the browser. I want it playing normal speed, and if end user wants to slow it down they have the extra frames for that to maintain clarity, which is why I record at 120.


I then used FFMPEG to create an image sequence of the video.


Then I ran Image Magic to create the transparent frames.


Then I put it back together with the following command for a HEVC mov file :


ffmpeg -r 120 -f image2 -i transparent/image_transparent_%08d.png -vcodec hevc_videotoolbox -crf 28 -alpha_quality 1 -tag:v hvc1 output.mov


I am still on an Intel MacBook Pro running FFMPEG 4.6 (as I've found 5+ was buggy with one of my commands a few months ago but can't remember which one, I think it was the videotoolbox).


The GoPro video has the following stream data as input to the FFMPEG :


Duration: 00:00:08.15, start: 0.000000, bitrate: 60160 kb/s
 Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 59891 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 119.88 tbc (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro H.265
 vendor_id : [0][0][0][0]
 encoder : GoPro H.265 encoder
 timecode : 19:05:32:105
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro AAC 
 vendor_id : [0][0][0][0]
 timecode : 19:05:32:105
 Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro TCD 
 timecode : 19:05:32:105
 Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 76 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro MET 


Whereas the re-constructed video has the following data :


Duration: 00:00:08.13, start: 0.000000, bitrate: 763650 kb/s
 Stream #0:0: Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 763696 kb/s, 120 fps, 120 tbr, 15360 tbn, 15360 tbc (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : FFMP
 encoder : Lavc58.134.100 hevc_videotoolbo


When this re-constructed video plays in the browser, it is in slow-mo and I need to set the playbackRate to 4.0 for it to play "normally".


Is there something I need to add to the video for the browser to play it at "normal" speed ?


EDIT


I just compared the two video streams :


original:
Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 59891 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 119.88 tbc (default)

Reconstructed:
 Stream #0:0: Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 763696 kb/s, 120 fps, 120 tbr, 15360 tbn, 15360 tbc (default)


I don't quit understand all of this though. so here's what I notice :


original. reconstructed
--------------------------------
bt709 progressive
89871 kb/s. 763696 kb/s
119.88 fps. 120 fps
119.88 tbr. 120 tbr
120k tbr. 15360 tbr
11960 tbr. 15360 tbc


Hmm. I suspect it has something to do with tbr and tbc whatever those are, or perhaps the progressive vs the bt709 ? the pirates are also vastly different.


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ffmpeg :how to apply animation in multiple images
2 mars 2023, par Pavan GhanateI am trying to merge number of selected images from gallery to a video template in order to make video status or short video in a android app, I am able to merge the selected images in the video using below cammand now i want to add animation


ArrayList<string> cmd2 = new ArrayList<>();
 cmd2.add("-y");
 cmd2.add("-i");
 if (video_temp_path!= null){
 cmd2.add(video_temp_path);
 }else {
 cmd2.add(Environment.getExternalStorageDirectory().getPath()
 + "/Download/happy.mp4");
 }


 for (int no = 0; no < paths.length; no++) {
 cmd2.add("-i");

 cmd2.add(paths[no]);

 }

 cmd2.add("-filter_complex");



 cmd2.add("[0][1]overlay=x=100:y=200:enable='between(t,3,8)'[v1];" +
 "[v1][2]overlay=x=100:y=200:enable='between(t,10,15)'[v2];" +
 "[v2][3]overlay=x=100:y=200:enable='gt(t,17)'[v3]");
 cmd2.add("-map");
 cmd2.add("[v3]");
 cmd2.add("-map");
 cmd2.add( "0:a");
 cmd2.add(Environment.getExternalStorageDirectory().getPath()
 + "/Download/output.mp4");
</string>

but now i want to add fade in out animation to images so I am using this cammand generated by chatgpt but its giving me error


ArrayList<string> cmd2 = new ArrayList<>();
 cmd2.add("-y");
 cmd2.add("-i");

 if (video_temp_path != null) {
 cmd2.add(video_temp_path);
 } else {
 cmd2.add(Environment.getExternalStorageDirectory().getPath() +
 "/Download/happy.mp4");
}

for (int no = 0; no < paths.length; no++) {
 cmd2.add("-loop");
 cmd2.add("1"); // loop the image

 cmd2.add("-t");
 cmd2.add("5"); // duration of the image

 cmd2.add("-i");
 cmd2.add(paths[no]);

 cmd2.add("-filter_complex");
 cmd2.add("[1:v]fade=in:st=0:d=1[tin];" +
 "[1:v]fade=out:st=4:d=1[tout];" +
 "[0:v][tin]overlay=x=100:y=200" +
 "[v1];" +
 "[v1][tout]overlay=x=100:y=200:enable='between(t,10,15)'[v2];" +
 "[v2][2:v]overlay=x=100:y=200:enable='gt(t,17)'[v3]");

 cmd2.add("-map");
 cmd2.add("[v3]");
 cmd2.add("-map");
 cmd2.add("0:a");
}

cmd2.add(Environment.getExternalStorageDirectory().getPath() +
 "/Download/output.mp4");
</string>

error is


Option map (set input stream mapping) cannot be applied to input url /storage/emulated/0/Pictures/temp/1677570327312.jpg -- you are trying to apply an input option to an output file or vice versa. Move this option before the file it belongs to.


2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Error parsing options for input file /storage/emulated/0/Pictures/temp/1677570327312.jpg.
2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Error opening input files :
2023-03-01 12:50:50.707 5950-6326/com.android.mergevideo E/mobile-ffmpeg : Invalid argument


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PHP-FFMPEG Waveform is not clean, is it a bug ?
6 février 2024, par MaxiI made a waveform through sample code :


$waveform = $audio->waveform(2000, 500, array('#FFA500'));
$waveform->save('waveform.png');


But result has some noise in top & bottom of edges.
How can make it better ?


PHP-FFMpeg : 23 | FFMpeg : 2023-02-27-git-891ed24f77 (Win X64) | PHP : 8.3


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