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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (6)
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MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 is the first MediaSPIP stable release.
Its official release date is June 21, 2013 and is announced here.
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)
Sur d’autres sites (2382)
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decreasing video resolution using ffmpeg increases file size
11 octobre 2024, par user270700I try to decrease video resolution using ffmpeg by,



ffmpeg -y -hide_banner -loglevel panic -i "input.mp4" -vf "scale=-1:256" -q:v 1 -c:a copy -threads 1 "output.mp4"




But the video file size is increased. 
The original height is larger than 256.
Why the file size is increased though the resolution is decreased ?


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How can I determine the resolution of incoming RTMP streams with ffmpeg ?
12 mars 2019, par toastedDeliI’m using ffmpeg to transcode RTMP from my own RTMP server into HLS ready H.264. At the moment, I’m executing a command of the following form
ffmpeg -i rtmp://<ip>:<port> <options for="for" 480p="480p"> <options for="for" 720p30="720p30"> <options for="for" 720p60="720p60"> <options for="for" 1080p="1080p">
</options></options></options></options></port></ip>This is causing me to attempt to transcode lower resolutions to higher resolutions.
The RTMP server I’m using is nginx with RTMP module
Is there a way I can determine the source resolution, so that I only transcode into resolutions smaller than the source one ?
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Concatenate Videos of Differing Resolution and Framerate
11 mars 2019, par user5507535I was going to use the following command
ffmpeg -i intro.mp4 -i cJfjHCA_ccc-2019-03-10T15\:30\:01-0400.inprogress.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" work.mp4
to prepend an intro to a video file. I didn’t realize until I attempted production that I don’t actually know what the video file’s resolution or framerate will be.
It’s important that the intro play at the appropriate speed so the visuals and music appear as intended, but I want the video file’s footage to be untouched. How can I do this ? Should I modify my existing command or start from a different approach ?