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Autres articles (71)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
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 -
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)
Sur d’autres sites (12626)
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Stack input streams and stagger in ffmpeg
12 décembre 2018, par ChrisI have 3 input videos I want to stack vertically. I want the 3rd to play immediately and have the second start when the 3rd finishes. The command I currently have working is below :
ffmpeg -i test.mp4 -i test2.mp4 -i test3.mp4 -filter_complex "[0:v]scale=320:240[top];[1:v]scale=320:240[mid];[2]scale=320:240[bot];[top][mid][bot]vstack=inputs=3[v]" -map "[v]" -map 1:a -t 60 out.mp4
This works, but all 3 start immediately and only the audio from clip #2 is mapped. I’d like to tell ffmpeg to copy both audio streams but stagger the clips so that clip 3 plays, then clip 2 plays, both with their respective audio. Is this something that ffmpeg filters can do ?
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How to transcode 50 H264 Streams with FFMPEG more efficient ?
20 juin 2019, par Kevini need to (Re-)Transcode 50 Live-Streams. These streams are in H264 with 720p to 1080p and bitrates up to 10M. I just want to reduce the quality and bitrate of the streams to up to 720p with max. 2M Bitrate.
That’s what i’m doing right now :
ffmpeg -re -i "http://domain.tld/path/file.ext" -vcodec libx264 -preset veryfast -vf scale=-2:720 -b:v 2M -maxrate 2M -bufsize 1M -acodec libfdk_aac -f flv "rtmp://127.0.0.1:1935/live/stream_xyz"
My Server CPU (2 x Xeon E5-2630 v3) is already at 100% with just 12 streams. I will upgrade my server to 2 x Xeon Gold 5118 next month, but i don’t think, that this will give me that much more power.
Can someone help me, to do this more efficient ?
Would it be more efficient / cheaper to do this with GPUs ?
Or any other ideas, to do that as efficient and cheap as possible ?
Thanks
-
How to transcode 50 H264 Streams with FFMPEG more efficient ?
20 juin 2019, par Kevini need to (Re-)Transcode 50 Live-Streams. These streams are in H264 with 720p to 1080p and bitrates up to 10M. I just want to reduce the quality and bitrate of the streams to up to 720p with max. 2M Bitrate.
That’s what i’m doing right now :
ffmpeg -re -i "http://domain.tld/path/file.ext" -vcodec libx264 -preset veryfast -vf scale=-2:720 -b:v 2M -maxrate 2M -bufsize 1M -acodec libfdk_aac -f flv "rtmp://127.0.0.1:1935/live/stream_xyz"
My Server CPU (2 x Xeon E5-2630 v3) is already at 100% with just 12 streams. I will upgrade my server to 2 x Xeon Gold 5118 next month, but i don’t think, that this will give me that much more power.
Can someone help me, to do this more efficient ?
Would it be more efficient / cheaper to do this with GPUs ?
Or any other ideas, to do that as efficient and cheap as possible ?
Thanks