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Autres articles (109)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (12621)
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How to display annotation data on video and render that video in nodejs ?
8 juillet 2019, par Rahul DubeyI’m having a JSON data of annotation’s coordinates which I wanted to display on the video for a particular time and render the video with the annotation.
I saw ffmpeg module. But it doesn’t have this feature
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Why video size is increasing after adding watermark to video using FFMPEG ?
18 novembre 2019, par Milan TejaniI am adding watermark to video using FFMPEG where i use
-preset ultrafast
in FFMPEG command.which add watermark to video very fast but due to this my output video size increased.ffmpeg -i input.mp4 -i mt.png -filter_complex "overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2" -codec:a copy -preset ultrafast output.mp4
Without Using
-preset ultrafast
input video size 5MB and output video size 5MB
Using
-preset ultrafast
input video size 5MB and output video size 11MB
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FFMPEG scaling video disable viewing it while process is not ended, for video transcoding on the fly
5 juillet 2022, par Lucas FGood day all,


I'm working on a video player with 1080p original video files, and I would like to change their resolution on the fly :


Actually I host all my original video files under a web mp4 1080p format, and I would like to be able to offer 720p, 480p, etc ... qualities.


So I started to look for tutorials about video transcoding on the fly and I found the FFMPEG tool.


I'm actually using the following command to scale videos - to 720p for e.g. :


ffmpeg -i input.mp4 -vf scale=-1:720 output.mp4



The problem is, once FFMPEG starts scaling it, I have to wait the end of the process before being able to play the video. Do you know if there is any parameter for this command to allow playing the video while it's under scaling ?


Or any workaround that can help me doing this ?


Thank you in advance for your help !


EDIT


Now I found how to access readable content while transcoding (by transcoding to fragmented MP4) :


ffmpeg -i input.mp4 -vf scale=-2:720 -movflags +frag_keyframe+separate_moof+omit_tfhd_offset+empty_moov output.mp4



But my problem is when opening the video it comes as an "ended" video of the current transcoded data.


So if video lasts 1min and is half transcoded, I'll see only 30s, it will not load more data, once the rest is transcoded.