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Other articles (62)
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Other interesting software
13 April 2011, byWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website: http://videopress.com/
License: GNU/GPL v2
Source code: (...) -
Librairies et logiciels spécifiques aux médias
10 December 2010, byPour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel; FFMpeg avec le maximum de décodeurs et (...) -
Demande de création d’un canal
12 March 2010, byEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)
On other websites (6921)
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FFmpeg - Add number to output
16 April 2016, by SkretzoIs there any way to automatically add a number to the output file with FFmpeg? I don’t want to override previous outputs, and I don’t want to set the output number manually. I am looking for something like output(n+1).
ffmpeg -i input.avi -ss 00:00:05 -to 00:00:10 -c copy output1.avi -i input.avi -ss 00:00:20 -to 00:00:35 -c copy output2.avi
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How do I use ffmpeg to extract frames starting at a specific number?
19 October 2020, by Gridzbi SpudvetchI've decided for some reason to upscale an entire 90-minute movie using AI. Problem is, I have several demo scenes that have already been upscaled, and I want to keep those frames rather than upscaling them again. Basically I want to export frames starting at a specific number, like
ffmpeg -i scene1.mp4 scene1/%10d+[starting number].jpg
. If the specified number were 1550, for example, the first frame it would export would be0000001550.jpg
. I still want it to start at the first frame of the input video, though; the only things I want to change are the names of the output files. Is there a way to do this?

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Frame Number Overlay With FFmpeg syntax
6 July 2020, by DougMThis has been covered before, and the consensus solution is (minor variations on) the following command line:


ffmpeg -i input.MP4 -vf "drawtext=fontfile=Arial.ttf:text='%{frame_num}':r=25:x=(w-tw)/2:y=h-(2*lh):fontcolor=white:fontsize=50:" -c:a copy output.mp4



Unfortunately, when I apply this to my MP4 files the text that gets placed is "r=25". I've tried every variation that I can think of, but none of them result in a frame number displayed that correlates to the frames.


I know that it is aware of frame numbers because as it runs in the command line it displays the frame number that it's working on:


. . .
frame= 132 fps= 13 q=-1.0 Lsize= 1040kB time=00:00:01.07 bitrate=7913.9kbits/s speed=0.11x
. . .


Can you please help me with the correct syntax for placing the frame number in the video?