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Autres articles (76)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
Sur d’autres sites (8141)
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FFMPEG silencedetect output does not match Audacity Sound Finder
12 avril 2017, par tngoI’m currently working on labeling sound sections in an audio file.
When I ran my audio file through Audacity Sound Finder with the following settings this is what I get
0.448980 0.498866 1
0.698413 0.927891 2
1.147392 1.426757 3
1.566440 1.815873 4These are the first 4 labels for the audio file where the sounds were found to be louder than -12dB.
However when I ran the same audio file through FFMPEG silencedetect filter with n=-12dB:d=0.1 this is the output
[silencedetect @ 000000000272a8c0] silence_start: -0.00712018
[silencedetect @ 000000000272a8c0] silence_end: 0.371519 | silence_duration: 0.378639
[silencedetect @ 000000000272a8c0] silence_start: 0.457279
[silencedetect @ 000000000272a8c0] silence_end: 0.650159 | silence_duration: 0.19288
[silencedetect @ 000000000272a8c0] silence_start: 0.828798
[silencedetect @ 000000000272a8c0] silence_end: 1.11456 | silence_duration: 0.28576
[silencedetect @ 000000000272a8c0] silence_start: 1.38608
[silencedetect @ 000000000272a8c0] silence_end: 1.8576 | silence_duration: 0.1
[silencedetect @ 000000000272a8c0] silence_start: 2.31488For FFMPEG to detect sound I’m considering silence_end to be sound_start and silence_start to be sound_end. With that logic the output from FFMPEG actually is
0.371519 0.457279 1
0.650159 0.828798 2
1.11456 1.38608 3
1.8576 2.31488 4To me it seems like all the timestamps from FFMPEG are shifted to the left compare to Audacity Sound Finder. Is there something that I’m missing ?
Any help would be much appreciated.
Thanks, -
Use ffmpeg to modify single frame without remux ?
6 février 2017, par 1337GameDevI am curious of a fast way to modify a video, slightly, as to force the video to hash differently than the source. I want to avoid changes to meta tags, as these are parsed from the container file and not the video data itself.
I will be using a process to compare videos for analytical work, but the process requires the 2 inputs to have differing hashes for the video content (otherwise the analytical process yields odd results). I am testing an improvement on this process, and need to have very similar videos.
I have currently just used a ffmpeg bash script and filtered a VERY light 2x2 pixel for the first second of the video (90% transparent) and this seems to do the trick as they hash differently, but it requires demux / remux of the video, which takes forever if I want to analyze a lot of videos.
Is there a way, using ffmpeg, to simple modify a single frame (specified by a time value) and change a single pixel and just copy the rest of the video contents ?
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Build : Bump http-proxy from 1.18.0 to 1.18.1 (#211)
10 septembre 2020, par dependabotBuild : Bump http-proxy from 1.18.0 to 1.18.1 (#211)
Bumps [http-proxy](https://github.com/http-party/node-http-proxy) from 1.18.0 to 1.18.1.
[Release notes](https://github.com/http-party/node-http-proxy/releases)
[Changelog](https://github.com/http-party/node-http-proxy/blob/master/CHANGELOG.md)
[Commits](https://github.com/http-party/node-http-proxy/compare/1.18.0...1.18.1)
Signed-off-by : dependabot[bot] <support@github.com>
Co-authored-by : dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>