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Autres articles (80)
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Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...) -
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 (12595)
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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.


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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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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