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Médias (1)
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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (41)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (8472)
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Frame accurate seeking over extracted stream using ffmpeg
7 septembre 2017, par nspI am doing the following :
Step 1 :
Extracting a part of an 10min long mp4 clip, between 00:01:00.000 to 00:02:00.000 using the following option :ffmpeg -ss 60.000 -t 60.000 -i input.mp4 -copyts -an -c copy extracted_minute.mp4
Step 2 : Use the following command to extract 10 second out of the 1 minute extracted clip (extracted_minute.mp4) and further encode it :
ffmpeg -seek_timestamp 1 -ss 60.000 -i extracted_minute.mp4 -t 10.000 -copyts -an -filter:v "select='between(t\\,60.000\\,70.000)'[out];[out]setpts=PTS-STARTPTS" -c:v libx264 -y 10sec_encode.mp4
I am facing issues when I try to seek on the extracted media in Step 2. I see that the "-ss/-t" option in "Step 2" somehow seems to operate on timestamps (starting from 0) and not the original timestamps (which had to start from 60) that are present in the stream, even though -copyts option is used. If I use -ss 0 and -t 10 in Step 2, I am able to extract frames. But, not when I use -ss 60 and -t 10.
Am I missing something here, or is this the expected behavior from FFmpeg ?
Is there any other method in which I can do frame accurate seeking for Step 2 ?Note :
- I need to be able to extract sequences from an already extracted stream
- Using -copyts option so that i have control over the exact sequences that I am extracting
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Evolution #4120 : Ajouter l’info de numéro de nouvelle version directement dans le bouton "Mettre ...
29 mars 2018, par b bSuper, c’est voulu d’avoir utilisé
->
au lieu d’un simple tiret comme séparateur ? -
Anomalie #4632 : Ne plus parler de spip-zone
31 janvier 2021, par Franck DHello :)
Pour moi, le mieux est git.spip ! Car il permet de mettre en avant git.spip et ne laisse aucun doute au gens, sur le lieu du dépôt, de la communauté.
Franck