Recherche avancée
Médias (1)
-
Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (96)
-
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 (...) -
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 (...) -
ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
Sur d’autres sites (5847)
-
Issues with adding the current timestamp of a video when using FFPLAY
28 janvier 2023, par lalelarsen1Hi i am trying to add to display the current time of the video as an overlay. i have tried to do follow the answer of this previous post : https://superuser.com/questions/968685/how-to-display-current-time-with-the-ffplay-exe but with no luck.


This is my line of code :


"./ffmpeg-2023-01-25-git-2c3107c3e9-full_build/bin/ffplay.exe" -vf "drawtext=fontfile=./consola.ttf:text='%{pts:hms}':fontsize=48:fontcolor=white:box=1:boxborderw=6:boxcolor=black@0.75:x=(w-text_w)/2:y=h-text_h-20" -i "%shadowplays_folder%\%NEWEST_FOLDER%\%NEWEST_FILE%" -autoexit -x "1000" -alwaysontop


This will display the text "hms}" not the time.


the above code works fine if i replace it with a simple string :


"./ffmpeg-2023-01-25-git-2c3107c3e9-full_build/bin/ffplay.exe" -vf "drawtext=fontfile=./consola.ttf:text='test':fontsize=48:fontcolor=white:box=1:boxborderw=6:boxcolor=black@0.75:x=(w-text_w)/2:y=h-text_h-20" -i "%shadowplays_folder%\%NEWEST_FOLDER%\%NEWEST_FILE%" -autoexit -x "1000" -alwaysontop


This will display the text "test"


what am i missing ?


-
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.


-
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


Syndiquer tout le site
